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CVE-2021-1446 (GCVE-0-2021-1446)
Vulnerability from cvelistv5
Published
2021-03-24 20:06
Modified
2024-11-08 23:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cisco | Cisco IOS XE Software |
Version: n/a |
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"vulnrichment": {
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"cveMetadata": "{\"cveId\": \"CVE-2021-1446\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-08T23:34:59.559Z\", \"dateReserved\": \"2020-11-13T00:00:00\", \"assignerOrgId\": \"d1c1063e-7a18-46af-9102-31f8928bc633\", \"datePublished\": \"2021-03-24T20:06:20.372091Z\", \"assignerShortName\": \"cisco\"}",
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}
}
ghsa-m3m6-h5x2-mhf5
Vulnerability from github
Published
2022-05-24 17:45
Modified
2022-05-24 17:45
VLAI Severity ?
Details
A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.
{
"affected": [],
"aliases": [
"CVE-2021-1446"
],
"database_specific": {
"cwe_ids": [
"CWE-754"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-03-24T20:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.",
"id": "GHSA-m3m6-h5x2-mhf5",
"modified": "2022-05-24T17:45:15Z",
"published": "2022-05-24T17:45:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-1446"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-alg-dos-hbBS7SZE"
}
],
"schema_version": "1.4.0",
"severity": []
}
cisco-sa-alg-dos-hbBS7SZE
Vulnerability from csaf_cisco
Published
2021-03-24 16:00
Modified
2021-03-24 16:00
Summary
Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnerability
Notes
Summary
A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload.
The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.
The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is part of the March 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74408"].
Vulnerable Products
This vulnerability affects Cisco devices if they are running a vulnerable release of Cisco IOS XE Software that is configured for NAT operation and has the DNS ALG feature enabled. The DNS ALG feature is enabled as soon as NAT is configured on the device.
Assess the NAT Configuration
1. Determine whether a device is configured to perform NAT
Administrators can determine whether NAT is active on the device (preferred) or whether NAT commands are present in the device configuration.
To determine whether NAT is active on a device, administrators can log in to the device and issue the show ip nat statistics command in the CLI. If NAT is active, the Outside interfaces and Inside interfaces sections of the command output will include at least one interface.
The following example shows the output of the show ip nat statistics command for a device where NAT is active:
Router# show ip nat statistics
Total active translations: 1 (0 static, 1 dynamic; 0 extended)
Outside interfaces:
GigabitEthernet0/0/3
Inside interfaces:
GigabitEthernet0/0/1
If the output of the show ip nat statistics command does not list any interfaces, NAT is not active on the device.
Alternatively, administrators can determine whether NAT is active on a device by issuing the show running-config command in the CLI and assessing whether NAT commands are present in the device configuration. If NAT is active on the device, the output of the show running-config command will include the ip nat inside and ip nat outside interface commands. In the case of the NAT Virtual Interface, the ip nat enable interface command will be present.
2. Determine whether DNS ALG is disabled in the NAT configuration
To determine whether the DNS ALG is disabled in the NAT configuration, use the show running-config | include ip nat service dns privileged EXEC command. The presence of both no ip nat service dns tcp and no ip nat service dns udp in the output of show running-config | include ip nat service dns indicates that the DNS ALG is disabled in the NAT configuration.
The following is the output of show running-config | include ip nat in Cisco IOS XE Software that has the DNS ALG disabled in the NAT configuration:
Router#show running-config | include ip nat service
no ip nat service dns tcp
no ip nat service dns udp
If both no ip nat service dns tcp and no ip nat service dns udp do not appear in the output of show running-config | include ip nat service dns, and the device runs an affected version of Cisco IOS XE Software with NAT enabled, that configuration is vulnerable.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following Cisco products:
IOS Software
IOS XR Software
NX-OS Software
Workarounds
There are no workarounds that address this vulnerability. However, a mitigation is available.
Administrators may mitigate this vulnerability by disabling the NAT ALG for DNS packets. However, this action may negatively impact normal operation of any device that sends or receives traffic through the affected device and, consequently, may disrupt normal network operations.
Administrators should verify that their network environment does not require use of a NAT ALG for DNS packets before they disable this functionality. To disable use of the NAT ALG for DNS packets, administrators can use the no ip nat service dns tcp and no ip nat service dns udp command in global configuration mode.
While this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
Fixed Software
Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html ["https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"]
Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"]
Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
Cisco IOS and IOS XE Software
To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (“Combined First Fixed”).
Customers can use the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to search advisories in the following ways:
Choose the software and one or more releases
Upload a .txt file that includes a list of specific releases
Enter the output of the show version command
After initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.
Customers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release—for example, 15.1(4)M2 or 3.13.8S:
By default, the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.
For a mapping of Cisco IOS XE Software releases to Cisco IOS Software releases, refer to the Cisco IOS XE 2 Release Notes ["https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/2/release/notes/rnasr21/rnasr21_gen.html#wp3000032"], Cisco IOS XE 3S Release Notes ["https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/3/release/notes/asr1k_rn_3s_rel_notes/asr1k_rn_3s_sys_req.html#wp3069754"], or Cisco IOS XE 3SG Release Notes ["https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24726.html#pgfId-2570252"], depending on the Cisco IOS XE Software release.
Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
Source
This vulnerability was found during the resolution of a Cisco TAC support case.
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.
{
"document": {
"acknowledgments": [
{
"summary": "This vulnerability was found during the resolution of a Cisco TAC support case."
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"notes": [
{
"category": "summary",
"text": "A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload.\r\n\r\nThe vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.\r\n\r\nThe vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the March 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74408\"].",
"title": "Summary"
},
{
"category": "general",
"text": "This vulnerability affects Cisco devices if they are running a vulnerable release of Cisco IOS XE Software that is configured for NAT operation and has the DNS ALG feature enabled. The DNS ALG feature is enabled as soon as NAT is configured on the device.\r\n Assess the NAT Configuration\r\n1. Determine whether a device is configured to perform NAT\r\n\r\nAdministrators can determine whether NAT is active on the device (preferred) or whether NAT commands are present in the device configuration.\r\n\r\nTo determine whether NAT is active on a device, administrators can log in to the device and issue the show ip nat statistics command in the CLI. If NAT is active, the Outside interfaces and Inside interfaces sections of the command output will include at least one interface.\r\n\r\nThe following example shows the output of the show ip nat statistics command for a device where NAT is active:\r\n\r\n\r\nRouter# show ip nat statistics\r\n Total active translations: 1 (0 static, 1 dynamic; 0 extended)\r\nOutside interfaces:\r\n GigabitEthernet0/0/3\r\nInside interfaces:\r\n GigabitEthernet0/0/1\r\n\r\n\r\nIf the output of the show ip nat statistics command does not list any interfaces, NAT is not active on the device.\r\n\r\nAlternatively, administrators can determine whether NAT is active on a device by issuing the show running-config command in the CLI and assessing whether NAT commands are present in the device configuration. If NAT is active on the device, the output of the show running-config command will include the ip nat inside and ip nat outside interface commands. In the case of the NAT Virtual Interface, the ip nat enable interface command will be present.\r\n\r\n2. Determine whether DNS ALG is disabled in the NAT configuration\r\n\r\n\r\nTo determine whether the DNS ALG is disabled in the NAT configuration, use the show running-config | include ip nat service dns privileged EXEC command. The presence of both no ip nat service dns tcp and no ip nat service dns udp in the output of show running-config | include ip nat service dns indicates that the DNS ALG is disabled in the NAT configuration.\r\n\r\nThe following is the output of show running-config | include ip nat in Cisco IOS XE Software that has the DNS ALG disabled in the NAT configuration:\r\n\r\n\r\nRouter#show running-config | include ip nat service\r\nno ip nat service dns tcp\r\nno ip nat service dns udp\r\n\r\nIf both no ip nat service dns tcp and no ip nat service dns udp do not appear in the output of show running-config | include ip nat service dns, and the device runs an affected version of Cisco IOS XE Software with NAT enabled, that configuration is vulnerable.",
"title": "Vulnerable Products"
},
{
"category": "general",
"text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\n Cisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nIOS Software\r\nIOS XR Software\r\nNX-OS Software",
"title": "Products Confirmed Not Vulnerable"
},
{
"category": "general",
"text": "There are no workarounds that address this vulnerability. However, a mitigation is available.\r\n\r\nAdministrators may mitigate this vulnerability by disabling the NAT ALG for DNS packets. However, this action may negatively impact normal operation of any device that sends or receives traffic through the affected device and, consequently, may disrupt normal network operations.\r\n\r\nAdministrators should verify that their network environment does not require use of a NAT ALG for DNS packets before they disable this functionality. To disable use of the NAT ALG for DNS packets, administrators can use the no ip nat service dns tcp and no ip nat service dns udp command in global configuration mode.\r\n\r\nWhile this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
"title": "Workarounds"
},
{
"category": "general",
"text": "Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (\u201cCombined First Fixed\u201d).\r\n\r\nCustomers can use the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to search advisories in the following ways:\r\n\r\nChoose the software and one or more releases\r\nUpload a .txt file that includes a list of specific releases\r\nEnter the output of the show version command\r\n\r\nAfter initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.\r\n\r\nCustomers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release\u2014for example, 15.1(4)M2 or 3.13.8S:\r\n\r\n\r\n\r\nBy default, the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.\r\n\r\nFor a mapping of Cisco IOS XE Software releases to Cisco IOS Software releases, refer to the Cisco IOS XE 2 Release Notes [\"https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/2/release/notes/rnasr21/rnasr21_gen.html#wp3000032\"], Cisco IOS XE 3S Release Notes [\"https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/3/release/notes/asr1k_rn_3s_rel_notes/asr1k_rn_3s_sys_req.html#wp3069754\"], or Cisco IOS XE 3SG Release Notes [\"https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24726.html#pgfId-2570252\"], depending on the Cisco IOS XE Software release.",
"title": "Fixed Software"
},
{
"category": "general",
"text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
"title": "Vulnerability Policy"
},
{
"category": "general",
"text": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
"title": "Exploitation and Public Announcements"
},
{
"category": "general",
"text": "This vulnerability was found during the resolution of a Cisco TAC support case.",
"title": "Source"
},
{
"category": "legal_disclaimer",
"text": "THIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
"title": "Legal Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "psirt@cisco.com",
"issuing_authority": "Cisco PSIRT",
"name": "Cisco",
"namespace": "https://wwww.cisco.com"
},
"references": [
{
"category": "self",
"summary": "Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnerability",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-alg-dos-hbBS7SZE"
},
{
"category": "external",
"summary": "Cisco Event Response: March 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication",
"url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74408"
},
{
"category": "external",
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"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
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{
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"url": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"
},
{
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"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"
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"url": "https://www.cisco.com/go/psirt"
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"url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
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{
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"summary": "Cisco\u0026nbsp;Software Checker",
"url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
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{
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"summary": "Cisco\u0026nbsp;IOS XE 2 Release Notes",
"url": "https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/2/release/notes/rnasr21/rnasr21_gen.html#wp3000032"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;IOS XE 3S Release Notes",
"url": "https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/3/release/notes/asr1k_rn_3s_rel_notes/asr1k_rn_3s_sys_req.html#wp3069754"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;IOS XE 3SG Release Notes",
"url": "https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24726.html#pgfId-2570252"
}
],
"title": "Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnerability",
"tracking": {
"current_release_date": "2021-03-24T16:00:00+00:00",
"generator": {
"date": "2024-05-10T23:01:36+00:00",
"engine": {
"name": "TVCE"
}
},
"id": "cisco-sa-alg-dos-hbBS7SZE",
"initial_release_date": "2021-03-24T16:00:00+00:00",
"revision_history": [
{
"date": "2021-03-24T15:30:30+00:00",
"number": "1.0.0",
"summary": "Initial public release."
}
],
"status": "final",
"version": "1.0.0"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"branches": [
{
"category": "service_pack",
"name": "3.7.0S",
"product": {
"name": "3.7.0S",
"product_id": "CSAFPID-184480"
}
},
{
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},
{
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},
{
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},
{
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}
},
{
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},
{
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"product_id": "CSAFPID-206188"
}
},
{
"category": "service_pack",
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"name": "3.7.8S",
"product_id": "CSAFPID-213580"
}
},
{
"category": "service_pack",
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"product": {
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"product_id": "CSAFPID-213798"
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},
{
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"product_id": "CSAFPID-213799"
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},
{
"category": "service_pack",
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"product": {
"name": "3.7.0xbS",
"product_id": "CSAFPID-213848"
}
},
{
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"name": "3.7.0bS",
"product": {
"name": "3.7.0bS",
"product_id": "CSAFPID-213955"
}
},
{
"category": "service_pack",
"name": "3.7.0xaS",
"product": {
"name": "3.7.0xaS",
"product_id": "CSAFPID-213956"
}
},
{
"category": "service_pack",
"name": "3.7.1aS",
"product": {
"name": "3.7.1aS",
"product_id": "CSAFPID-213957"
}
}
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"name": "16.12.3a",
"product_id": "CSAFPID-277321"
}
},
{
"category": "service_pack",
"name": "16.12.4a",
"product": {
"name": "16.12.4a",
"product_id": "CSAFPID-278881"
}
},
{
"category": "service_pack",
"name": "16.12.1z1",
"product": {
"name": "16.12.1z1",
"product_id": "CSAFPID-281320"
}
}
],
"category": "product_version",
"name": "16.12"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.1.1",
"product": {
"name": "17.1.1",
"product_id": "CSAFPID-245377"
}
},
{
"category": "service_pack",
"name": "17.1.1a",
"product": {
"name": "17.1.1a",
"product_id": "CSAFPID-272932"
}
},
{
"category": "service_pack",
"name": "17.1.1s",
"product": {
"name": "17.1.1s",
"product_id": "CSAFPID-274818"
}
},
{
"category": "service_pack",
"name": "17.1.2",
"product": {
"name": "17.1.2",
"product_id": "CSAFPID-277338"
}
},
{
"category": "service_pack",
"name": "17.1.1t",
"product": {
"name": "17.1.1t",
"product_id": "CSAFPID-277348"
}
}
],
"category": "product_version",
"name": "17.1"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.2.1",
"product": {
"name": "17.2.1",
"product_id": "CSAFPID-251225"
}
},
{
"category": "service_pack",
"name": "17.2.1r",
"product": {
"name": "17.2.1r",
"product_id": "CSAFPID-277194"
}
},
{
"category": "service_pack",
"name": "17.2.1a",
"product": {
"name": "17.2.1a",
"product_id": "CSAFPID-277343"
}
},
{
"category": "service_pack",
"name": "17.2.1v",
"product": {
"name": "17.2.1v",
"product_id": "CSAFPID-278002"
}
},
{
"category": "service_pack",
"name": "17.2.2",
"product": {
"name": "17.2.2",
"product_id": "CSAFPID-278504"
}
}
],
"category": "product_version",
"name": "17.2"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.3.1",
"product": {
"name": "17.3.1",
"product_id": "CSAFPID-254712"
}
},
{
"category": "service_pack",
"name": "17.3.1a",
"product": {
"name": "17.3.1a",
"product_id": "CSAFPID-279338"
}
},
{
"category": "service_pack",
"name": "17.3.1w",
"product": {
"name": "17.3.1w",
"product_id": "CSAFPID-279339"
}
}
],
"category": "product_version",
"name": "17.3"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.9.7b",
"product": {
"name": "17.9.7b",
"product_id": "CSAFPID-306388"
}
}
],
"category": "product_version",
"name": "17.9"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.11.99SW",
"product": {
"name": "17.11.99SW",
"product_id": "CSAFPID-296860"
}
}
],
"category": "product_version",
"name": "17.11SW"
}
],
"category": "product_family",
"name": "Cisco IOS XE Software"
}
],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-1446",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCvv65113"
}
],
"notes": [
{
"category": "other",
"text": "Complete.",
"title": "Affected Product Comprehensiveness"
}
],
"product_status": {
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"CSAFPID-184481",
"CSAFPID-194730",
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"CSAFPID-194735",
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"CSAFPID-194737",
"CSAFPID-194842",
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"CSAFPID-206162",
"CSAFPID-206174",
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"CSAFPID-210078",
"CSAFPID-210079",
"CSAFPID-210081",
"CSAFPID-212268",
"CSAFPID-212408",
"CSAFPID-212411",
"CSAFPID-212412",
"CSAFPID-212436",
"CSAFPID-213100",
"CSAFPID-213469",
"CSAFPID-213470",
"CSAFPID-213471",
"CSAFPID-213472",
"CSAFPID-213473",
"CSAFPID-213474",
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"CSAFPID-213476",
"CSAFPID-213477",
"CSAFPID-213478",
"CSAFPID-213557",
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"CSAFPID-213635",
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"CSAFPID-217264",
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"CSAFPID-220688",
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]
},
"release_date": "2021-03-24T16:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "Cisco has released software updates that address this vulnerability.",
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],
"url": "https://software.cisco.com"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.6,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
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"CSAFPID-184481",
"CSAFPID-194730",
"CSAFPID-194731",
"CSAFPID-194732",
"CSAFPID-194735",
"CSAFPID-194736",
"CSAFPID-194737",
"CSAFPID-194842",
"CSAFPID-194843",
"CSAFPID-198123",
"CSAFPID-198124",
"CSAFPID-198125",
"CSAFPID-200768",
"CSAFPID-200770",
"CSAFPID-200771",
"CSAFPID-201495",
"CSAFPID-202539",
"CSAFPID-202540",
"CSAFPID-202541",
"CSAFPID-202542",
"CSAFPID-202558",
"CSAFPID-203353",
"CSAFPID-206159",
"CSAFPID-206160",
"CSAFPID-206161",
"CSAFPID-206162",
"CSAFPID-206174",
"CSAFPID-206175",
"CSAFPID-206176",
"CSAFPID-206178",
"CSAFPID-206180",
"CSAFPID-206181",
"CSAFPID-206188",
"CSAFPID-206189",
"CSAFPID-206190",
"CSAFPID-206191",
"CSAFPID-206192",
"CSAFPID-206193",
"CSAFPID-210078",
"CSAFPID-210079",
"CSAFPID-210081",
"CSAFPID-212268",
"CSAFPID-212408",
"CSAFPID-212411",
"CSAFPID-212412",
"CSAFPID-212436",
"CSAFPID-213100",
"CSAFPID-213469",
"CSAFPID-213470",
"CSAFPID-213471",
"CSAFPID-213472",
"CSAFPID-213473",
"CSAFPID-213474",
"CSAFPID-213475",
"CSAFPID-213476",
"CSAFPID-213477",
"CSAFPID-213478",
"CSAFPID-213557",
"CSAFPID-213580",
"CSAFPID-213635",
"CSAFPID-213642",
"CSAFPID-213661",
"CSAFPID-213700",
"CSAFPID-213776",
"CSAFPID-213777",
"CSAFPID-213778",
"CSAFPID-213779",
"CSAFPID-213781",
"CSAFPID-213798",
"CSAFPID-213799",
"CSAFPID-213809",
"CSAFPID-213815",
"CSAFPID-213816",
"CSAFPID-213825",
"CSAFPID-213848",
"CSAFPID-213955",
"CSAFPID-213956",
"CSAFPID-213957",
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-214993",
"CSAFPID-217234",
"CSAFPID-217253",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217257",
"CSAFPID-217259",
"CSAFPID-217260",
"CSAFPID-217261",
"CSAFPID-217262",
"CSAFPID-217263",
"CSAFPID-217264",
"CSAFPID-217265",
"CSAFPID-217266",
"CSAFPID-217267",
"CSAFPID-217268",
"CSAFPID-217270",
"CSAFPID-217271",
"CSAFPID-217272",
"CSAFPID-217273",
"CSAFPID-217276",
"CSAFPID-218901",
"CSAFPID-218903",
"CSAFPID-218905",
"CSAFPID-220517",
"CSAFPID-220687",
"CSAFPID-220688",
"CSAFPID-220802",
"CSAFPID-220993",
"CSAFPID-222257",
"CSAFPID-222693",
"CSAFPID-222694",
"CSAFPID-222711",
"CSAFPID-222925",
"CSAFPID-222942",
"CSAFPID-223018",
"CSAFPID-223019",
"CSAFPID-223241",
"CSAFPID-223252",
"CSAFPID-224424",
"CSAFPID-224702",
"CSAFPID-225099",
"CSAFPID-225168",
"CSAFPID-225337",
"CSAFPID-225359",
"CSAFPID-225466",
"CSAFPID-225568",
"CSAFPID-225569",
"CSAFPID-225784",
"CSAFPID-225832",
"CSAFPID-225856",
"CSAFPID-225858",
"CSAFPID-226078",
"CSAFPID-226160",
"CSAFPID-226330",
"CSAFPID-226354",
"CSAFPID-227556",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-227922",
"CSAFPID-227923",
"CSAFPID-228193",
"CSAFPID-228194",
"CSAFPID-228690",
"CSAFPID-228706",
"CSAFPID-229124",
"CSAFPID-229187",
"CSAFPID-230301",
"CSAFPID-230302",
"CSAFPID-230303",
"CSAFPID-231187",
"CSAFPID-231389",
"CSAFPID-231390",
"CSAFPID-231454",
"CSAFPID-231667",
"CSAFPID-231682",
"CSAFPID-231826",
"CSAFPID-232008",
"CSAFPID-232461",
"CSAFPID-232767",
"CSAFPID-233141",
"CSAFPID-233155",
"CSAFPID-233447",
"CSAFPID-234928",
"CSAFPID-235307",
"CSAFPID-235858",
"CSAFPID-236834",
"CSAFPID-236837",
"CSAFPID-237332",
"CSAFPID-237460",
"CSAFPID-238937",
"CSAFPID-239264",
"CSAFPID-241736",
"CSAFPID-242308",
"CSAFPID-242834",
"CSAFPID-243362",
"CSAFPID-244070",
"CSAFPID-244071",
"CSAFPID-244530",
"CSAFPID-244900",
"CSAFPID-244912",
"CSAFPID-245375",
"CSAFPID-245377",
"CSAFPID-246386",
"CSAFPID-247629",
"CSAFPID-248242",
"CSAFPID-249171",
"CSAFPID-250629",
"CSAFPID-251075",
"CSAFPID-251165",
"CSAFPID-251166",
"CSAFPID-251225",
"CSAFPID-252045",
"CSAFPID-252235",
"CSAFPID-252271",
"CSAFPID-252272",
"CSAFPID-252913",
"CSAFPID-252914",
"CSAFPID-254688",
"CSAFPID-254712",
"CSAFPID-257955",
"CSAFPID-257984",
"CSAFPID-258170",
"CSAFPID-258229",
"CSAFPID-258388",
"CSAFPID-258406",
"CSAFPID-258900",
"CSAFPID-260741",
"CSAFPID-260917",
"CSAFPID-261240",
"CSAFPID-261241",
"CSAFPID-261465",
"CSAFPID-262389",
"CSAFPID-262390",
"CSAFPID-262549",
"CSAFPID-262595",
"CSAFPID-263804",
"CSAFPID-264096",
"CSAFPID-264488",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-266259",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-268921",
"CSAFPID-270097",
"CSAFPID-271798",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273112",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273563",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-276837",
"CSAFPID-277147",
"CSAFPID-277148",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-277904",
"CSAFPID-277945",
"CSAFPID-278002",
"CSAFPID-278032",
"CSAFPID-278402",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-281320",
"CSAFPID-296860",
"CSAFPID-306388"
]
}
],
"title": "Cisco IOS XE Software Network Address Translation Denial of Service Vulnerability"
}
]
}
cisco-sa-alg-dos-hbbs7sze
Vulnerability from csaf_cisco
Published
2021-03-24 16:00
Modified
2021-03-24 16:00
Summary
Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnerability
Notes
Summary
A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload.
The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.
The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is part of the March 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74408"].
Vulnerable Products
This vulnerability affects Cisco devices if they are running a vulnerable release of Cisco IOS XE Software that is configured for NAT operation and has the DNS ALG feature enabled. The DNS ALG feature is enabled as soon as NAT is configured on the device.
Assess the NAT Configuration
1. Determine whether a device is configured to perform NAT
Administrators can determine whether NAT is active on the device (preferred) or whether NAT commands are present in the device configuration.
To determine whether NAT is active on a device, administrators can log in to the device and issue the show ip nat statistics command in the CLI. If NAT is active, the Outside interfaces and Inside interfaces sections of the command output will include at least one interface.
The following example shows the output of the show ip nat statistics command for a device where NAT is active:
Router# show ip nat statistics
Total active translations: 1 (0 static, 1 dynamic; 0 extended)
Outside interfaces:
GigabitEthernet0/0/3
Inside interfaces:
GigabitEthernet0/0/1
If the output of the show ip nat statistics command does not list any interfaces, NAT is not active on the device.
Alternatively, administrators can determine whether NAT is active on a device by issuing the show running-config command in the CLI and assessing whether NAT commands are present in the device configuration. If NAT is active on the device, the output of the show running-config command will include the ip nat inside and ip nat outside interface commands. In the case of the NAT Virtual Interface, the ip nat enable interface command will be present.
2. Determine whether DNS ALG is disabled in the NAT configuration
To determine whether the DNS ALG is disabled in the NAT configuration, use the show running-config | include ip nat service dns privileged EXEC command. The presence of both no ip nat service dns tcp and no ip nat service dns udp in the output of show running-config | include ip nat service dns indicates that the DNS ALG is disabled in the NAT configuration.
The following is the output of show running-config | include ip nat in Cisco IOS XE Software that has the DNS ALG disabled in the NAT configuration:
Router#show running-config | include ip nat service
no ip nat service dns tcp
no ip nat service dns udp
If both no ip nat service dns tcp and no ip nat service dns udp do not appear in the output of show running-config | include ip nat service dns, and the device runs an affected version of Cisco IOS XE Software with NAT enabled, that configuration is vulnerable.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products ["#vp"] section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following Cisco products:
IOS Software
IOS XR Software
NX-OS Software
Workarounds
There are no workarounds that address this vulnerability. However, a mitigation is available.
Administrators may mitigate this vulnerability by disabling the NAT ALG for DNS packets. However, this action may negatively impact normal operation of any device that sends or receives traffic through the affected device and, consequently, may disrupt normal network operations.
Administrators should verify that their network environment does not require use of a NAT ALG for DNS packets before they disable this functionality. To disable use of the NAT ALG for DNS packets, administrators can use the no ip nat service dns tcp and no ip nat service dns udp command in global configuration mode.
While this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.
Fixed Software
Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html ["https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"]
Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
When considering software upgrades ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"]
Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
Cisco IOS and IOS XE Software
To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (“Combined First Fixed”).
Customers can use the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] to search advisories in the following ways:
Choose the software and one or more releases
Upload a .txt file that includes a list of specific releases
Enter the output of the show version command
After initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.
Customers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release—for example, 15.1(4)M2 or 3.13.8S:
By default, the Cisco Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.
For a mapping of Cisco IOS XE Software releases to Cisco IOS Software releases, refer to the Cisco IOS XE 2 Release Notes ["https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/2/release/notes/rnasr21/rnasr21_gen.html#wp3000032"], Cisco IOS XE 3S Release Notes ["https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/3/release/notes/asr1k_rn_3s_rel_notes/asr1k_rn_3s_sys_req.html#wp3069754"], or Cisco IOS XE 3SG Release Notes ["https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24726.html#pgfId-2570252"], depending on the Cisco IOS XE Software release.
Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
Source
This vulnerability was found during the resolution of a Cisco TAC support case.
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.
{
"document": {
"acknowledgments": [
{
"summary": "This vulnerability was found during the resolution of a Cisco TAC support case."
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"notes": [
{
"category": "summary",
"text": "A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload.\r\n\r\nThe vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.\r\n\r\nThe vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.\r\n\r\nCisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.\r\n\r\n\r\n\r\nThis advisory is part of the March 2021 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: March 2021 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74408\"].",
"title": "Summary"
},
{
"category": "general",
"text": "This vulnerability affects Cisco devices if they are running a vulnerable release of Cisco IOS XE Software that is configured for NAT operation and has the DNS ALG feature enabled. The DNS ALG feature is enabled as soon as NAT is configured on the device.\r\n Assess the NAT Configuration\r\n1. Determine whether a device is configured to perform NAT\r\n\r\nAdministrators can determine whether NAT is active on the device (preferred) or whether NAT commands are present in the device configuration.\r\n\r\nTo determine whether NAT is active on a device, administrators can log in to the device and issue the show ip nat statistics command in the CLI. If NAT is active, the Outside interfaces and Inside interfaces sections of the command output will include at least one interface.\r\n\r\nThe following example shows the output of the show ip nat statistics command for a device where NAT is active:\r\n\r\n\r\nRouter# show ip nat statistics\r\n Total active translations: 1 (0 static, 1 dynamic; 0 extended)\r\nOutside interfaces:\r\n GigabitEthernet0/0/3\r\nInside interfaces:\r\n GigabitEthernet0/0/1\r\n\r\n\r\nIf the output of the show ip nat statistics command does not list any interfaces, NAT is not active on the device.\r\n\r\nAlternatively, administrators can determine whether NAT is active on a device by issuing the show running-config command in the CLI and assessing whether NAT commands are present in the device configuration. If NAT is active on the device, the output of the show running-config command will include the ip nat inside and ip nat outside interface commands. In the case of the NAT Virtual Interface, the ip nat enable interface command will be present.\r\n\r\n2. Determine whether DNS ALG is disabled in the NAT configuration\r\n\r\n\r\nTo determine whether the DNS ALG is disabled in the NAT configuration, use the show running-config | include ip nat service dns privileged EXEC command. The presence of both no ip nat service dns tcp and no ip nat service dns udp in the output of show running-config | include ip nat service dns indicates that the DNS ALG is disabled in the NAT configuration.\r\n\r\nThe following is the output of show running-config | include ip nat in Cisco IOS XE Software that has the DNS ALG disabled in the NAT configuration:\r\n\r\n\r\nRouter#show running-config | include ip nat service\r\nno ip nat service dns tcp\r\nno ip nat service dns udp\r\n\r\nIf both no ip nat service dns tcp and no ip nat service dns udp do not appear in the output of show running-config | include ip nat service dns, and the device runs an affected version of Cisco IOS XE Software with NAT enabled, that configuration is vulnerable.",
"title": "Vulnerable Products"
},
{
"category": "general",
"text": "Only products listed in the Vulnerable Products [\"#vp\"] section of this advisory are known to be affected by this vulnerability.\r\n\r\n Cisco has confirmed that this vulnerability does not affect the following Cisco products:\r\n\r\nIOS Software\r\nIOS XR Software\r\nNX-OS Software",
"title": "Products Confirmed Not Vulnerable"
},
{
"category": "general",
"text": "There are no workarounds that address this vulnerability. However, a mitigation is available.\r\n\r\nAdministrators may mitigate this vulnerability by disabling the NAT ALG for DNS packets. However, this action may negatively impact normal operation of any device that sends or receives traffic through the affected device and, consequently, may disrupt normal network operations.\r\n\r\nAdministrators should verify that their network environment does not require use of a NAT ALG for DNS packets before they disable this functionality. To disable use of the NAT ALG for DNS packets, administrators can use the no ip nat service dns tcp and no ip nat service dns udp command in global configuration mode.\r\n\r\nWhile this mitigation has been deployed and was proven successful in a test environment, customers should determine the applicability and effectiveness in their own environment and under their own use conditions. Customers should be aware that any workaround or mitigation that is implemented may negatively impact the functionality or performance of their network based on intrinsic customer deployment scenarios and limitations. Customers should not deploy any workarounds or mitigations before first evaluating the applicability to their own environment and any impact to such environment.",
"title": "Workarounds"
},
{
"category": "general",
"text": "Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nWhen considering software upgrades [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html#fixes\"], customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n Customers Without Service Contracts\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to identify any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (\u201cCombined First Fixed\u201d).\r\n\r\nCustomers can use the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] to search advisories in the following ways:\r\n\r\nChoose the software and one or more releases\r\nUpload a .txt file that includes a list of specific releases\r\nEnter the output of the show version command\r\n\r\nAfter initiating a search, customers can customize the search to include all Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication.\r\n\r\nCustomers can also use the following form to determine whether a release is affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE Software release\u2014for example, 15.1(4)M2 or 3.13.8S:\r\n\r\n\r\n\r\nBy default, the Cisco Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] includes results only for vulnerabilities that have a Critical or High Security Impact Rating (SIR). To include results for Medium SIR vulnerabilities, customers can use the Cisco Software Checker on Cisco.com and check the Medium check box in the drop-down list under Impact Rating when customizing a search.\r\n\r\nFor a mapping of Cisco IOS XE Software releases to Cisco IOS Software releases, refer to the Cisco IOS XE 2 Release Notes [\"https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/2/release/notes/rnasr21/rnasr21_gen.html#wp3000032\"], Cisco IOS XE 3S Release Notes [\"https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/3/release/notes/asr1k_rn_3s_rel_notes/asr1k_rn_3s_sys_req.html#wp3069754\"], or Cisco IOS XE 3SG Release Notes [\"https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24726.html#pgfId-2570252\"], depending on the Cisco IOS XE Software release.",
"title": "Fixed Software"
},
{
"category": "general",
"text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
"title": "Vulnerability Policy"
},
{
"category": "general",
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"product": {
"name": "16.9.5",
"product_id": "CSAFPID-271798"
}
},
{
"category": "service_pack",
"name": "16.9.5f",
"product": {
"name": "16.9.5f",
"product_id": "CSAFPID-276837"
}
},
{
"category": "service_pack",
"name": "16.9.6",
"product": {
"name": "16.9.6",
"product_id": "CSAFPID-277945"
}
}
],
"category": "product_version",
"name": "16.9"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.10.1",
"product": {
"name": "16.10.1",
"product_id": "CSAFPID-225858"
}
},
{
"category": "service_pack",
"name": "16.10.1a",
"product": {
"name": "16.10.1a",
"product_id": "CSAFPID-250629"
}
},
{
"category": "service_pack",
"name": "16.10.1b",
"product": {
"name": "16.10.1b",
"product_id": "CSAFPID-252045"
}
},
{
"category": "service_pack",
"name": "16.10.1s",
"product": {
"name": "16.10.1s",
"product_id": "CSAFPID-252913"
}
},
{
"category": "service_pack",
"name": "16.10.1c",
"product": {
"name": "16.10.1c",
"product_id": "CSAFPID-254688"
}
},
{
"category": "service_pack",
"name": "16.10.1e",
"product": {
"name": "16.10.1e",
"product_id": "CSAFPID-257955"
}
},
{
"category": "service_pack",
"name": "16.10.1d",
"product": {
"name": "16.10.1d",
"product_id": "CSAFPID-258900"
}
},
{
"category": "service_pack",
"name": "16.10.2",
"product": {
"name": "16.10.2",
"product_id": "CSAFPID-260917"
}
},
{
"category": "service_pack",
"name": "16.10.1f",
"product": {
"name": "16.10.1f",
"product_id": "CSAFPID-262595"
}
},
{
"category": "service_pack",
"name": "16.10.1g",
"product": {
"name": "16.10.1g",
"product_id": "CSAFPID-266259"
}
},
{
"category": "service_pack",
"name": "16.10.3",
"product": {
"name": "16.10.3",
"product_id": "CSAFPID-273112"
}
}
],
"category": "product_version",
"name": "16.10"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.11.1",
"product": {
"name": "16.11.1",
"product_id": "CSAFPID-227918"
}
},
{
"category": "service_pack",
"name": "16.11.1a",
"product": {
"name": "16.11.1a",
"product_id": "CSAFPID-252271"
}
},
{
"category": "service_pack",
"name": "16.11.1b",
"product": {
"name": "16.11.1b",
"product_id": "CSAFPID-260741"
}
},
{
"category": "service_pack",
"name": "16.11.2",
"product": {
"name": "16.11.2",
"product_id": "CSAFPID-261240"
}
},
{
"category": "service_pack",
"name": "16.11.1s",
"product": {
"name": "16.11.1s",
"product_id": "CSAFPID-261465"
}
},
{
"category": "service_pack",
"name": "16.11.1c",
"product": {
"name": "16.11.1c",
"product_id": "CSAFPID-264096"
}
}
],
"category": "product_version",
"name": "16.11"
},
{
"branches": [
{
"category": "service_pack",
"name": "16.12.1",
"product": {
"name": "16.12.1",
"product_id": "CSAFPID-227920"
}
},
{
"category": "service_pack",
"name": "16.12.1s",
"product": {
"name": "16.12.1s",
"product_id": "CSAFPID-265735"
}
},
{
"category": "service_pack",
"name": "16.12.1a",
"product": {
"name": "16.12.1a",
"product_id": "CSAFPID-265841"
}
},
{
"category": "service_pack",
"name": "16.12.1c",
"product": {
"name": "16.12.1c",
"product_id": "CSAFPID-267110"
}
},
{
"category": "service_pack",
"name": "16.12.1w",
"product": {
"name": "16.12.1w",
"product_id": "CSAFPID-267240"
}
},
{
"category": "service_pack",
"name": "16.12.2",
"product": {
"name": "16.12.2",
"product_id": "CSAFPID-267605"
}
},
{
"category": "service_pack",
"name": "16.12.1y",
"product": {
"name": "16.12.1y",
"product_id": "CSAFPID-271938"
}
},
{
"category": "service_pack",
"name": "16.12.2a",
"product": {
"name": "16.12.2a",
"product_id": "CSAFPID-272047"
}
},
{
"category": "service_pack",
"name": "16.12.3",
"product": {
"name": "16.12.3",
"product_id": "CSAFPID-273445"
}
},
{
"category": "service_pack",
"name": "16.12.2s",
"product": {
"name": "16.12.2s",
"product_id": "CSAFPID-273509"
}
},
{
"category": "service_pack",
"name": "16.12.1x",
"product": {
"name": "16.12.1x",
"product_id": "CSAFPID-273649"
}
},
{
"category": "service_pack",
"name": "16.12.1t",
"product": {
"name": "16.12.1t",
"product_id": "CSAFPID-274832"
}
},
{
"category": "service_pack",
"name": "16.12.2t",
"product": {
"name": "16.12.2t",
"product_id": "CSAFPID-275538"
}
},
{
"category": "service_pack",
"name": "16.12.4",
"product": {
"name": "16.12.4",
"product_id": "CSAFPID-277147"
}
},
{
"category": "service_pack",
"name": "16.12.3s",
"product": {
"name": "16.12.3s",
"product_id": "CSAFPID-277255"
}
},
{
"category": "service_pack",
"name": "16.12.1z",
"product": {
"name": "16.12.1z",
"product_id": "CSAFPID-277256"
}
},
{
"category": "service_pack",
"name": "16.12.3a",
"product": {
"name": "16.12.3a",
"product_id": "CSAFPID-277321"
}
},
{
"category": "service_pack",
"name": "16.12.4a",
"product": {
"name": "16.12.4a",
"product_id": "CSAFPID-278881"
}
},
{
"category": "service_pack",
"name": "16.12.1z1",
"product": {
"name": "16.12.1z1",
"product_id": "CSAFPID-281320"
}
}
],
"category": "product_version",
"name": "16.12"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.1.1",
"product": {
"name": "17.1.1",
"product_id": "CSAFPID-245377"
}
},
{
"category": "service_pack",
"name": "17.1.1a",
"product": {
"name": "17.1.1a",
"product_id": "CSAFPID-272932"
}
},
{
"category": "service_pack",
"name": "17.1.1s",
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}
},
{
"category": "service_pack",
"name": "17.1.2",
"product": {
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"product_id": "CSAFPID-277338"
}
},
{
"category": "service_pack",
"name": "17.1.1t",
"product": {
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}
}
],
"category": "product_version",
"name": "17.1"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.2.1",
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"name": "17.2.1",
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}
},
{
"category": "service_pack",
"name": "17.2.1r",
"product": {
"name": "17.2.1r",
"product_id": "CSAFPID-277194"
}
},
{
"category": "service_pack",
"name": "17.2.1a",
"product": {
"name": "17.2.1a",
"product_id": "CSAFPID-277343"
}
},
{
"category": "service_pack",
"name": "17.2.1v",
"product": {
"name": "17.2.1v",
"product_id": "CSAFPID-278002"
}
},
{
"category": "service_pack",
"name": "17.2.2",
"product": {
"name": "17.2.2",
"product_id": "CSAFPID-278504"
}
}
],
"category": "product_version",
"name": "17.2"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.3.1",
"product": {
"name": "17.3.1",
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}
},
{
"category": "service_pack",
"name": "17.3.1a",
"product": {
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"product_id": "CSAFPID-279338"
}
},
{
"category": "service_pack",
"name": "17.3.1w",
"product": {
"name": "17.3.1w",
"product_id": "CSAFPID-279339"
}
}
],
"category": "product_version",
"name": "17.3"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.9.7b",
"product": {
"name": "17.9.7b",
"product_id": "CSAFPID-306388"
}
}
],
"category": "product_version",
"name": "17.9"
},
{
"branches": [
{
"category": "service_pack",
"name": "17.11.99SW",
"product": {
"name": "17.11.99SW",
"product_id": "CSAFPID-296860"
}
}
],
"category": "product_version",
"name": "17.11SW"
}
],
"category": "product_family",
"name": "Cisco IOS XE Software"
}
],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-1446",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCvv65113"
}
],
"notes": [
{
"category": "other",
"text": "Complete.",
"title": "Affected Product Comprehensiveness"
}
],
"product_status": {
"known_affected": [
"CSAFPID-184480",
"CSAFPID-184481",
"CSAFPID-194730",
"CSAFPID-194731",
"CSAFPID-194732",
"CSAFPID-194735",
"CSAFPID-194736",
"CSAFPID-194737",
"CSAFPID-194842",
"CSAFPID-194843",
"CSAFPID-198123",
"CSAFPID-198124",
"CSAFPID-198125",
"CSAFPID-200768",
"CSAFPID-200770",
"CSAFPID-200771",
"CSAFPID-201495",
"CSAFPID-202539",
"CSAFPID-202540",
"CSAFPID-202541",
"CSAFPID-202542",
"CSAFPID-202558",
"CSAFPID-203353",
"CSAFPID-206159",
"CSAFPID-206160",
"CSAFPID-206161",
"CSAFPID-206162",
"CSAFPID-206174",
"CSAFPID-206175",
"CSAFPID-206176",
"CSAFPID-206178",
"CSAFPID-206180",
"CSAFPID-206181",
"CSAFPID-206188",
"CSAFPID-206189",
"CSAFPID-206190",
"CSAFPID-206191",
"CSAFPID-206192",
"CSAFPID-206193",
"CSAFPID-210078",
"CSAFPID-210079",
"CSAFPID-210081",
"CSAFPID-212268",
"CSAFPID-212408",
"CSAFPID-212411",
"CSAFPID-212412",
"CSAFPID-212436",
"CSAFPID-213100",
"CSAFPID-213469",
"CSAFPID-213470",
"CSAFPID-213471",
"CSAFPID-213472",
"CSAFPID-213473",
"CSAFPID-213474",
"CSAFPID-213475",
"CSAFPID-213476",
"CSAFPID-213477",
"CSAFPID-213478",
"CSAFPID-213557",
"CSAFPID-213580",
"CSAFPID-213635",
"CSAFPID-213642",
"CSAFPID-213661",
"CSAFPID-213700",
"CSAFPID-213776",
"CSAFPID-213777",
"CSAFPID-213778",
"CSAFPID-213779",
"CSAFPID-213781",
"CSAFPID-213798",
"CSAFPID-213799",
"CSAFPID-213809",
"CSAFPID-213815",
"CSAFPID-213816",
"CSAFPID-213825",
"CSAFPID-213848",
"CSAFPID-213955",
"CSAFPID-213956",
"CSAFPID-213957",
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-214993",
"CSAFPID-217234",
"CSAFPID-217253",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217257",
"CSAFPID-217259",
"CSAFPID-217260",
"CSAFPID-217261",
"CSAFPID-217262",
"CSAFPID-217263",
"CSAFPID-217264",
"CSAFPID-217265",
"CSAFPID-217266",
"CSAFPID-217267",
"CSAFPID-217268",
"CSAFPID-217270",
"CSAFPID-217271",
"CSAFPID-217272",
"CSAFPID-217273",
"CSAFPID-217276",
"CSAFPID-218901",
"CSAFPID-218903",
"CSAFPID-218905",
"CSAFPID-220517",
"CSAFPID-220687",
"CSAFPID-220688",
"CSAFPID-220802",
"CSAFPID-220993",
"CSAFPID-222257",
"CSAFPID-222693",
"CSAFPID-222694",
"CSAFPID-222711",
"CSAFPID-222925",
"CSAFPID-222942",
"CSAFPID-223018",
"CSAFPID-223019",
"CSAFPID-223241",
"CSAFPID-223252",
"CSAFPID-224424",
"CSAFPID-224702",
"CSAFPID-225099",
"CSAFPID-225168",
"CSAFPID-225337",
"CSAFPID-225359",
"CSAFPID-225466",
"CSAFPID-225568",
"CSAFPID-225569",
"CSAFPID-225784",
"CSAFPID-225832",
"CSAFPID-225856",
"CSAFPID-225858",
"CSAFPID-226078",
"CSAFPID-226160",
"CSAFPID-226330",
"CSAFPID-226354",
"CSAFPID-227556",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-227922",
"CSAFPID-227923",
"CSAFPID-228193",
"CSAFPID-228194",
"CSAFPID-228690",
"CSAFPID-228706",
"CSAFPID-229124",
"CSAFPID-229187",
"CSAFPID-230301",
"CSAFPID-230302",
"CSAFPID-230303",
"CSAFPID-231187",
"CSAFPID-231389",
"CSAFPID-231390",
"CSAFPID-231454",
"CSAFPID-231667",
"CSAFPID-231682",
"CSAFPID-231826",
"CSAFPID-232008",
"CSAFPID-232461",
"CSAFPID-232767",
"CSAFPID-233141",
"CSAFPID-233155",
"CSAFPID-233447",
"CSAFPID-234928",
"CSAFPID-235307",
"CSAFPID-235858",
"CSAFPID-236834",
"CSAFPID-236837",
"CSAFPID-237332",
"CSAFPID-237460",
"CSAFPID-238937",
"CSAFPID-239264",
"CSAFPID-241736",
"CSAFPID-242308",
"CSAFPID-242834",
"CSAFPID-243362",
"CSAFPID-244070",
"CSAFPID-244071",
"CSAFPID-244530",
"CSAFPID-244900",
"CSAFPID-244912",
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"CSAFPID-251075",
"CSAFPID-251165",
"CSAFPID-251166",
"CSAFPID-251225",
"CSAFPID-252045",
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"CSAFPID-252271",
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"CSAFPID-254688",
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"CSAFPID-257955",
"CSAFPID-257984",
"CSAFPID-258170",
"CSAFPID-258229",
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"CSAFPID-258406",
"CSAFPID-258900",
"CSAFPID-260741",
"CSAFPID-260917",
"CSAFPID-261240",
"CSAFPID-261241",
"CSAFPID-261465",
"CSAFPID-262389",
"CSAFPID-262390",
"CSAFPID-262549",
"CSAFPID-262595",
"CSAFPID-263804",
"CSAFPID-264096",
"CSAFPID-264488",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-266259",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-268921",
"CSAFPID-270097",
"CSAFPID-271798",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273112",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273563",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-276837",
"CSAFPID-277147",
"CSAFPID-277148",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-277904",
"CSAFPID-277945",
"CSAFPID-278002",
"CSAFPID-278032",
"CSAFPID-278402",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-281320",
"CSAFPID-296860",
"CSAFPID-306388"
]
},
"release_date": "2021-03-24T16:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "Cisco has released software updates that address this vulnerability.",
"product_ids": [
"CSAFPID-184480",
"CSAFPID-184481",
"CSAFPID-194730",
"CSAFPID-194731",
"CSAFPID-194732",
"CSAFPID-194735",
"CSAFPID-194736",
"CSAFPID-194737",
"CSAFPID-194842",
"CSAFPID-194843",
"CSAFPID-198123",
"CSAFPID-198124",
"CSAFPID-198125",
"CSAFPID-200768",
"CSAFPID-200770",
"CSAFPID-200771",
"CSAFPID-201495",
"CSAFPID-202539",
"CSAFPID-202540",
"CSAFPID-202541",
"CSAFPID-202542",
"CSAFPID-202558",
"CSAFPID-203353",
"CSAFPID-206159",
"CSAFPID-206160",
"CSAFPID-206161",
"CSAFPID-206162",
"CSAFPID-206174",
"CSAFPID-206175",
"CSAFPID-206176",
"CSAFPID-206178",
"CSAFPID-206180",
"CSAFPID-206181",
"CSAFPID-206188",
"CSAFPID-206189",
"CSAFPID-206190",
"CSAFPID-206191",
"CSAFPID-206192",
"CSAFPID-206193",
"CSAFPID-210078",
"CSAFPID-210079",
"CSAFPID-210081",
"CSAFPID-212268",
"CSAFPID-212408",
"CSAFPID-212411",
"CSAFPID-212412",
"CSAFPID-212436",
"CSAFPID-213100",
"CSAFPID-213469",
"CSAFPID-213470",
"CSAFPID-213471",
"CSAFPID-213472",
"CSAFPID-213473",
"CSAFPID-213474",
"CSAFPID-213475",
"CSAFPID-213476",
"CSAFPID-213477",
"CSAFPID-213478",
"CSAFPID-213557",
"CSAFPID-213580",
"CSAFPID-213635",
"CSAFPID-213642",
"CSAFPID-213661",
"CSAFPID-213700",
"CSAFPID-213776",
"CSAFPID-213777",
"CSAFPID-213778",
"CSAFPID-213779",
"CSAFPID-213781",
"CSAFPID-213798",
"CSAFPID-213799",
"CSAFPID-213809",
"CSAFPID-213815",
"CSAFPID-213816",
"CSAFPID-213825",
"CSAFPID-213848",
"CSAFPID-213955",
"CSAFPID-213956",
"CSAFPID-213957",
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-214993",
"CSAFPID-217234",
"CSAFPID-217253",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217257",
"CSAFPID-217259",
"CSAFPID-217260",
"CSAFPID-217261",
"CSAFPID-217262",
"CSAFPID-217263",
"CSAFPID-217264",
"CSAFPID-217265",
"CSAFPID-217266",
"CSAFPID-217267",
"CSAFPID-217268",
"CSAFPID-217270",
"CSAFPID-217271",
"CSAFPID-217272",
"CSAFPID-217273",
"CSAFPID-217276",
"CSAFPID-218901",
"CSAFPID-218903",
"CSAFPID-218905",
"CSAFPID-220517",
"CSAFPID-220687",
"CSAFPID-220688",
"CSAFPID-220802",
"CSAFPID-220993",
"CSAFPID-222257",
"CSAFPID-222693",
"CSAFPID-222694",
"CSAFPID-222711",
"CSAFPID-222925",
"CSAFPID-222942",
"CSAFPID-223018",
"CSAFPID-223019",
"CSAFPID-223241",
"CSAFPID-223252",
"CSAFPID-224424",
"CSAFPID-224702",
"CSAFPID-225099",
"CSAFPID-225168",
"CSAFPID-225337",
"CSAFPID-225359",
"CSAFPID-225466",
"CSAFPID-225568",
"CSAFPID-225569",
"CSAFPID-225784",
"CSAFPID-225832",
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"CSAFPID-226078",
"CSAFPID-226160",
"CSAFPID-226330",
"CSAFPID-226354",
"CSAFPID-227556",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-227922",
"CSAFPID-227923",
"CSAFPID-228193",
"CSAFPID-228194",
"CSAFPID-228690",
"CSAFPID-228706",
"CSAFPID-229124",
"CSAFPID-229187",
"CSAFPID-230301",
"CSAFPID-230302",
"CSAFPID-230303",
"CSAFPID-231187",
"CSAFPID-231389",
"CSAFPID-231390",
"CSAFPID-231454",
"CSAFPID-231667",
"CSAFPID-231682",
"CSAFPID-231826",
"CSAFPID-232008",
"CSAFPID-232461",
"CSAFPID-232767",
"CSAFPID-233141",
"CSAFPID-233155",
"CSAFPID-233447",
"CSAFPID-234928",
"CSAFPID-235307",
"CSAFPID-235858",
"CSAFPID-236834",
"CSAFPID-236837",
"CSAFPID-237332",
"CSAFPID-237460",
"CSAFPID-238937",
"CSAFPID-239264",
"CSAFPID-241736",
"CSAFPID-242308",
"CSAFPID-242834",
"CSAFPID-243362",
"CSAFPID-244070",
"CSAFPID-244071",
"CSAFPID-244530",
"CSAFPID-244900",
"CSAFPID-244912",
"CSAFPID-245375",
"CSAFPID-245377",
"CSAFPID-246386",
"CSAFPID-247629",
"CSAFPID-248242",
"CSAFPID-249171",
"CSAFPID-250629",
"CSAFPID-251075",
"CSAFPID-251165",
"CSAFPID-251166",
"CSAFPID-251225",
"CSAFPID-252045",
"CSAFPID-252235",
"CSAFPID-252271",
"CSAFPID-252272",
"CSAFPID-252913",
"CSAFPID-252914",
"CSAFPID-254688",
"CSAFPID-254712",
"CSAFPID-257955",
"CSAFPID-257984",
"CSAFPID-258170",
"CSAFPID-258229",
"CSAFPID-258388",
"CSAFPID-258406",
"CSAFPID-258900",
"CSAFPID-260741",
"CSAFPID-260917",
"CSAFPID-261240",
"CSAFPID-261241",
"CSAFPID-261465",
"CSAFPID-262389",
"CSAFPID-262390",
"CSAFPID-262549",
"CSAFPID-262595",
"CSAFPID-263804",
"CSAFPID-264096",
"CSAFPID-264488",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-266259",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-268921",
"CSAFPID-270097",
"CSAFPID-271798",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273112",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273563",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-276837",
"CSAFPID-277147",
"CSAFPID-277148",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-277904",
"CSAFPID-277945",
"CSAFPID-278002",
"CSAFPID-278032",
"CSAFPID-278402",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-281320",
"CSAFPID-296860",
"CSAFPID-306388"
],
"url": "https://software.cisco.com"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.6,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-184480",
"CSAFPID-184481",
"CSAFPID-194730",
"CSAFPID-194731",
"CSAFPID-194732",
"CSAFPID-194735",
"CSAFPID-194736",
"CSAFPID-194737",
"CSAFPID-194842",
"CSAFPID-194843",
"CSAFPID-198123",
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"CSAFPID-198125",
"CSAFPID-200768",
"CSAFPID-200770",
"CSAFPID-200771",
"CSAFPID-201495",
"CSAFPID-202539",
"CSAFPID-202540",
"CSAFPID-202541",
"CSAFPID-202542",
"CSAFPID-202558",
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"CSAFPID-206160",
"CSAFPID-206161",
"CSAFPID-206162",
"CSAFPID-206174",
"CSAFPID-206175",
"CSAFPID-206176",
"CSAFPID-206178",
"CSAFPID-206180",
"CSAFPID-206181",
"CSAFPID-206188",
"CSAFPID-206189",
"CSAFPID-206190",
"CSAFPID-206191",
"CSAFPID-206192",
"CSAFPID-206193",
"CSAFPID-210078",
"CSAFPID-210079",
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"CSAFPID-212412",
"CSAFPID-212436",
"CSAFPID-213100",
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"CSAFPID-213470",
"CSAFPID-213471",
"CSAFPID-213472",
"CSAFPID-213473",
"CSAFPID-213474",
"CSAFPID-213475",
"CSAFPID-213476",
"CSAFPID-213477",
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"CSAFPID-213580",
"CSAFPID-213635",
"CSAFPID-213642",
"CSAFPID-213661",
"CSAFPID-213700",
"CSAFPID-213776",
"CSAFPID-213777",
"CSAFPID-213778",
"CSAFPID-213779",
"CSAFPID-213781",
"CSAFPID-213798",
"CSAFPID-213799",
"CSAFPID-213809",
"CSAFPID-213815",
"CSAFPID-213816",
"CSAFPID-213825",
"CSAFPID-213848",
"CSAFPID-213955",
"CSAFPID-213956",
"CSAFPID-213957",
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-214993",
"CSAFPID-217234",
"CSAFPID-217253",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217257",
"CSAFPID-217259",
"CSAFPID-217260",
"CSAFPID-217261",
"CSAFPID-217262",
"CSAFPID-217263",
"CSAFPID-217264",
"CSAFPID-217265",
"CSAFPID-217266",
"CSAFPID-217267",
"CSAFPID-217268",
"CSAFPID-217270",
"CSAFPID-217271",
"CSAFPID-217272",
"CSAFPID-217273",
"CSAFPID-217276",
"CSAFPID-218901",
"CSAFPID-218903",
"CSAFPID-218905",
"CSAFPID-220517",
"CSAFPID-220687",
"CSAFPID-220688",
"CSAFPID-220802",
"CSAFPID-220993",
"CSAFPID-222257",
"CSAFPID-222693",
"CSAFPID-222694",
"CSAFPID-222711",
"CSAFPID-222925",
"CSAFPID-222942",
"CSAFPID-223018",
"CSAFPID-223019",
"CSAFPID-223241",
"CSAFPID-223252",
"CSAFPID-224424",
"CSAFPID-224702",
"CSAFPID-225099",
"CSAFPID-225168",
"CSAFPID-225337",
"CSAFPID-225359",
"CSAFPID-225466",
"CSAFPID-225568",
"CSAFPID-225569",
"CSAFPID-225784",
"CSAFPID-225832",
"CSAFPID-225856",
"CSAFPID-225858",
"CSAFPID-226078",
"CSAFPID-226160",
"CSAFPID-226330",
"CSAFPID-226354",
"CSAFPID-227556",
"CSAFPID-227918",
"CSAFPID-227920",
"CSAFPID-227922",
"CSAFPID-227923",
"CSAFPID-228193",
"CSAFPID-228194",
"CSAFPID-228690",
"CSAFPID-228706",
"CSAFPID-229124",
"CSAFPID-229187",
"CSAFPID-230301",
"CSAFPID-230302",
"CSAFPID-230303",
"CSAFPID-231187",
"CSAFPID-231389",
"CSAFPID-231390",
"CSAFPID-231454",
"CSAFPID-231667",
"CSAFPID-231682",
"CSAFPID-231826",
"CSAFPID-232008",
"CSAFPID-232461",
"CSAFPID-232767",
"CSAFPID-233141",
"CSAFPID-233155",
"CSAFPID-233447",
"CSAFPID-234928",
"CSAFPID-235307",
"CSAFPID-235858",
"CSAFPID-236834",
"CSAFPID-236837",
"CSAFPID-237332",
"CSAFPID-237460",
"CSAFPID-238937",
"CSAFPID-239264",
"CSAFPID-241736",
"CSAFPID-242308",
"CSAFPID-242834",
"CSAFPID-243362",
"CSAFPID-244070",
"CSAFPID-244071",
"CSAFPID-244530",
"CSAFPID-244900",
"CSAFPID-244912",
"CSAFPID-245375",
"CSAFPID-245377",
"CSAFPID-246386",
"CSAFPID-247629",
"CSAFPID-248242",
"CSAFPID-249171",
"CSAFPID-250629",
"CSAFPID-251075",
"CSAFPID-251165",
"CSAFPID-251166",
"CSAFPID-251225",
"CSAFPID-252045",
"CSAFPID-252235",
"CSAFPID-252271",
"CSAFPID-252272",
"CSAFPID-252913",
"CSAFPID-252914",
"CSAFPID-254688",
"CSAFPID-254712",
"CSAFPID-257955",
"CSAFPID-257984",
"CSAFPID-258170",
"CSAFPID-258229",
"CSAFPID-258388",
"CSAFPID-258406",
"CSAFPID-258900",
"CSAFPID-260741",
"CSAFPID-260917",
"CSAFPID-261240",
"CSAFPID-261241",
"CSAFPID-261465",
"CSAFPID-262389",
"CSAFPID-262390",
"CSAFPID-262549",
"CSAFPID-262595",
"CSAFPID-263804",
"CSAFPID-264096",
"CSAFPID-264488",
"CSAFPID-265735",
"CSAFPID-265841",
"CSAFPID-266259",
"CSAFPID-267110",
"CSAFPID-267240",
"CSAFPID-267605",
"CSAFPID-268921",
"CSAFPID-270097",
"CSAFPID-271798",
"CSAFPID-271938",
"CSAFPID-272047",
"CSAFPID-272932",
"CSAFPID-273112",
"CSAFPID-273445",
"CSAFPID-273509",
"CSAFPID-273563",
"CSAFPID-273649",
"CSAFPID-274818",
"CSAFPID-274832",
"CSAFPID-275538",
"CSAFPID-276837",
"CSAFPID-277147",
"CSAFPID-277148",
"CSAFPID-277194",
"CSAFPID-277255",
"CSAFPID-277256",
"CSAFPID-277321",
"CSAFPID-277338",
"CSAFPID-277343",
"CSAFPID-277348",
"CSAFPID-277904",
"CSAFPID-277945",
"CSAFPID-278002",
"CSAFPID-278032",
"CSAFPID-278402",
"CSAFPID-278504",
"CSAFPID-278881",
"CSAFPID-279338",
"CSAFPID-279339",
"CSAFPID-281320",
"CSAFPID-296860",
"CSAFPID-306388"
]
}
],
"title": "Cisco IOS XE Software Network Address Translation Denial of Service Vulnerability"
}
]
}
cnvd-2021-22190
Vulnerability from cnvd
Title
Cisco IOS XE拒绝服务漏洞（CNVD-2021-22190）
Description
Cisco IOS XE是美国Cisco公司为其网络设备开发的一套基于Linux内核的模块化操作系统。
Cisco IOS XE中的网络地址转换（NAT）使用的DNS应用层网关（ALG）功能存在拒绝服务漏洞。该漏洞源于受影响的设备在检查某些DNS数据包时会发生逻辑错误。攻击者可通过发送特制DNS数据包利用该漏洞导致设备重新加载，从而可导致拒绝服务。
Severity
高
VLAI Severity ?
Patch Name
Cisco IOS XE拒绝服务漏洞（CNVD-2021-22190）的补丁
Patch Description
Cisco IOS XE是美国Cisco公司为其网络设备开发的一套基于Linux内核的模块化操作系统。
Cisco IOS XE中的网络地址转换（NAT）使用的DNS应用层网关（ALG）功能存在拒绝服务漏洞。该漏洞源于受影响的设备在检查某些DNS数据包时会发生逻辑错误。攻击者可通过发送特制DNS数据包利用该漏洞导致设备重新加载，从而可导致拒绝服务。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description
厂商已发布了漏洞修复程序，请及时关注更新： https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-alg-dos-hbBS7SZE
Reference
https://nvd.nist.gov/vuln/detail/CVE-2021-1446
Impacted products
| Name | Cisco IOS XE |
|---|
{
"cves": {
"cve": {
"cveNumber": "CVE-2021-1446",
"cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-1446"
}
},
"description": "Cisco IOS XE\u662f\u7f8e\u56fdCisco\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u4e00\u5957\u57fa\u4e8eLinux\u5185\u6838\u7684\u6a21\u5757\u5316\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco IOS XE\u4e2d\u7684\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff08NAT\uff09\u4f7f\u7528\u7684DNS\u5e94\u7528\u5c42\u7f51\u5173\uff08ALG\uff09\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5728\u68c0\u67e5\u67d0\u4e9bDNS\u6570\u636e\u5305\u65f6\u4f1a\u53d1\u751f\u903b\u8f91\u9519\u8bef\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236DNS\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8bbe\u5907\u91cd\u65b0\u52a0\u8f7d\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
"formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-alg-dos-hbBS7SZE",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2021-22190",
"openTime": "2021-03-25",
"patchDescription": "Cisco IOS XE\u662f\u7f8e\u56fdCisco\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u4e00\u5957\u57fa\u4e8eLinux\u5185\u6838\u7684\u6a21\u5757\u5316\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco IOS XE\u4e2d\u7684\u7f51\u7edc\u5730\u5740\u8f6c\u6362\uff08NAT\uff09\u4f7f\u7528\u7684DNS\u5e94\u7528\u5c42\u7f51\u5173\uff08ALG\uff09\u529f\u80fd\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u53d7\u5f71\u54cd\u7684\u8bbe\u5907\u5728\u68c0\u67e5\u67d0\u4e9bDNS\u6570\u636e\u5305\u65f6\u4f1a\u53d1\u751f\u903b\u8f91\u9519\u8bef\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236DNS\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8bbe\u5907\u91cd\u65b0\u52a0\u8f7d\uff0c\u4ece\u800c\u53ef\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
"patchName": "Cisco IOS XE\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-22190\uff09\u7684\u8865\u4e01",
"products": {
"product": "Cisco IOS XE"
},
"referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-1446",
"serverity": "\u9ad8",
"submitTime": "2021-03-25",
"title": "Cisco IOS XE\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-22190\uff09"
}
icsa-22-300-03
Vulnerability from csaf_cisa
Published
2022-10-27 06:00
Modified
2022-10-27 06:00
Summary
Rockwell Automation Stratix Devices Containing Cisco IOS
Notes
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.
Risk evaluation
Successful exploitation of these vulnerabilities could lead to a denial-of-service condition and allow remote code execution.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
United States
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:
Recommended Practices
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Recommended Practices
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
Recommended Practices
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.
Recommended Practices
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Recommended Practices
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Recommended Practices
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Recommended Practices
Do not click web links or open attachments in unsolicited email messages.
Recommended Practices
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Recommended Practices
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
Recommended Practices
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
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{
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"text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.",
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"title": "Vulnerability Summary"
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"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
}
],
"remediations": [
{
"category": "mitigation",
"details": "Rockwell Automation has addressed these vulnerabilities updates and encourages users to combine these updates with Rockwell Automation\u0027s Security Best Practices:",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight"
},
{
"category": "mitigation",
"details": "(CVE-2021-1385) Stratix 5800 switches: Update to Stratix 5800 v17.04.01 or later",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
},
{
"cve": "CVE-2020-3516",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"notes": [
{
"category": "summary",
"text": "A vulnerability in the web server authentication of Cisco IOS XE Software could allow an authenticated, remote attacker to crash the web server on the device.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
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"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-3516"
},
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"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
}
],
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"details": "Rockwell Automation has addressed these vulnerabilities updates and encourages users to combine these updates with Rockwell Automation\u0027s Security Best Practices:",
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}
ICSA-22-300-03
Vulnerability from csaf_cisa
Published
2022-10-27 06:00
Modified
2022-10-27 06:00
Summary
Rockwell Automation Stratix Devices Containing Cisco IOS
Notes
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.
Risk evaluation
Successful exploitation of these vulnerabilities could lead to a denial-of-service condition and allow remote code execution.
Critical infrastructure sectors
Multiple
Countries/areas deployed
Worldwide
Company headquarters location
United States
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:
Recommended Practices
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
Recommended Practices
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
Recommended Practices
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.
Recommended Practices
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Recommended Practices
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Recommended Practices
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
Recommended Practices
Do not click web links or open attachments in unsolicited email messages.
Recommended Practices
Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
Recommended Practices
Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
Recommended Practices
No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
{
"document": {
"acknowledgments": [
{
"organization": "Rockwell Automation",
"summary": "reporting these vulnerabilities to CISA"
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Disclosure is not limited",
"tlp": {
"label": "WHITE",
"url": "https://us-cert.cisa.gov/tlp/"
}
},
"lang": "en-US",
"notes": [
{
"category": "legal_disclaimer",
"text": "All information products included in https://us-cert.cisa.gov/ics are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.",
"title": "Legal Notice"
},
{
"category": "summary",
"text": "Successful exploitation of these vulnerabilities could lead to a denial-of-service condition and allow remote code execution. ",
"title": "Risk evaluation"
},
{
"category": "other",
"text": "Multiple",
"title": "Critical infrastructure sectors"
},
{
"category": "other",
"text": "Worldwide",
"title": "Countries/areas deployed"
},
{
"category": "other",
"text": "United States",
"title": "Company headquarters location"
},
{
"category": "general",
"text": "CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Locate control system networks and remote devices behind firewalls and isolating them from business networks.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA also recommends users take the following measures to protect themselves from social engineering attacks:",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Do not click web links or open attachments in unsolicited email messages.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.",
"title": "Recommended Practices"
}
],
"publisher": {
"category": "coordinator",
"contact_details": "central@cisa.dhs.gov",
"name": "CISA",
"namespace": "https://www.cisa.gov/"
},
"references": [
{
"category": "self",
"summary": "ICS Advisory ICSA-22-300-03 JSON",
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2022/icsa-22-300-03.json"
},
{
"category": "self",
"summary": "ICSA Advisory ICSA-22-300-03 - Web Version",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-22-300-03"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/topics/industrial-control-systems"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/uscert/sites/default/files/publications/emailscams0905.pdf"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/uscert/ncas/tips/ST04-014"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B"
}
],
"title": "Rockwell Automation Stratix Devices Containing Cisco IOS",
"tracking": {
"current_release_date": "2022-10-27T06:00:00.000000Z",
"generator": {
"engine": {
"name": "CISA CSAF Generator",
"version": "1.0.0"
}
},
"id": "ICSA-22-300-03",
"initial_release_date": "2022-10-27T06:00:00.000000Z",
"revision_history": [
{
"date": "2022-10-27T06:00:00.000000Z",
"legacy_version": "Initial",
"number": "1",
"summary": "Initial Publication"
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c16.12.01",
"product": {
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}
],
"category": "product_name",
"name": "Rockwell Automation Stratix Devices"
},
{
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}
],
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]
},
"vulnerabilities": [
{
"cve": "CVE-2020-3229",
"cwe": {
"id": "CWE-863",
"name": "Incorrect Authorization"
},
"notes": [
{
"category": "summary",
"text": "The administrator graphical user interface (GUI) lacks correct handling of RBAC, which may allow a malicious user to send modified HTTP requests to the targeted device. If exploited, a read-only remote attacker could potentially execute commands or configuration changes as the administrator.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
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},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"remediations": [
{
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"details": "Rockwell Automation has addressed these vulnerabilities updates and encourages users to combine these updates with Rockwell Automation\u0027s Security Best Practices:",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight"
},
{
"category": "mitigation",
"details": "(CVE-2020-3229) Stratix 5800 switches: Update to Stratix 5800 v17.04.01 or later",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
},
{
"cve": "CVE-2020-3219",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"notes": [
{
"category": "summary",
"text": "Due to insufficient validation of user input, this vulnerability could allow a malicious user to inject custom input into the web user interface. If exploited, a remote attacker could potentially execute arbitrary code with administrative privileges on the operating system.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-3219"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
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"product_ids": [
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],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
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"version": "3.0"
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"products": [
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]
},
{
"cve": "CVE-2021-1446",
"cwe": {
"id": "CWE-754",
"name": "Improper Check for Unusual or Exceptional Conditions"
},
"notes": [
{
"category": "summary",
"text": "A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE software could allow an unauthenticated, remote attacker to reload an affected device.",
"title": "Vulnerability Summary"
}
],
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{
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}
],
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"CSAFPID-0001"
],
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight"
},
{
"category": "mitigation",
"details": "(CVE-2021-1446) Stratix 5800 switches: Update to Stratix 5800 v17.04.01 or later",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.6,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
},
{
"cve": "CVE-2020-3200",
"cwe": {
"id": "CWE-436",
"name": "Interpretation Conflict"
},
"notes": [
{
"category": "summary",
"text": "A vulnerability in the Secure Shell (SSH) server code of Cisco IOS software and Cisco IOS XE software could allow an authenticated, remote attacker to reload an affected device.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001",
"CSAFPID-0002"
]
},
"references": [
{
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"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-3200"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"
}
],
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{
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"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002"
],
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight"
},
{
"category": "mitigation",
"details": "(CVE-2020-3200) Stratix 5800 switches: Update to v16.12.01 or later",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
},
{
"category": "mitigation",
"details": "(CVE-2020-3200) Stratix 5400/5410 switches: Update to v15.2(7)E2 or later",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0002"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59065"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.7,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001",
"CSAFPID-0002"
]
}
]
},
{
"cve": "CVE-2020-3211",
"cwe": {
"id": "CWE-78",
"name": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)"
},
"notes": [
{
"category": "summary",
"text": "Due to improper input sanitization, this vulnerability could allow a malicious user with administrative privileges to submit specially crafted input in the web user interface. If exploited, a remote attacker could potentially execute arbitrary commands with root privileges on the operating system.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-3211"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
}
],
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{
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"CSAFPID-0001"
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{
"category": "mitigation",
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"product_ids": [
"CSAFPID-0001"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.2,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
},
{
"cve": "CVE-2020-3218",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"notes": [
{
"category": "summary",
"text": "Due to improper validation of user supplied input, a malicious user could potentially create a file on the target device and upload a second malicious file to the device. If exploited, a user could execute arbitrary code with root privileges on the underlying Linux shell.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-3218"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
}
],
"remediations": [
{
"category": "mitigation",
"details": "Rockwell Automation has addressed these vulnerabilities updates and encourages users to combine these updates with Rockwell Automation\u0027s Security Best Practices:",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight"
},
{
"category": "mitigation",
"details": "(CVE-2020-3218) Stratix 5800 switches: Update to Stratix 5800 v17.04.01 or later",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 7.2,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
},
{
"cve": "CVE-2020-3209",
"cwe": {
"id": "CWE-347",
"name": "Improper Verification of Cryptographic Signature"
},
"notes": [
{
"category": "summary",
"text": "During the initial boot process, there is an improper check on the area code managing the verification of the digital signatures of the system files. If exploited, a malicious user could potentially install and boot malicious software images or execute unsigned binaries on the targeted device. A malicious user could exploit this vulnerability by loading unsigned software on the affected device.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-3209"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"remediations": [
{
"category": "mitigation",
"details": "Rockwell Automation has addressed these vulnerabilities updates and encourages users to combine these updates with Rockwell Automation\u0027s Security Best Practices:",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight"
},
{
"category": "mitigation",
"details": "(CVE-2020-3209) Stratix 5800 switches: Update to Stratix 5800 v17.04.01 or later",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
},
{
"cve": "CVE-2021-1385",
"cwe": {
"id": "CWE-22",
"name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
},
"notes": [
{
"category": "summary",
"text": "A vulnerability in the Cisco IOx application hosting environment of multiple Cisco platforms could allow an authenticated, remote attacker to conduct directory traversal attacks and read and write files on the underlying operating system or host system.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1385"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
}
],
"remediations": [
{
"category": "mitigation",
"details": "Rockwell Automation has addressed these vulnerabilities updates and encourages users to combine these updates with Rockwell Automation\u0027s Security Best Practices:",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight"
},
{
"category": "mitigation",
"details": "(CVE-2021-1385) Stratix 5800 switches: Update to Stratix 5800 v17.04.01 or later",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
},
{
"cve": "CVE-2020-3516",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
"notes": [
{
"category": "summary",
"text": "A vulnerability in the web server authentication of Cisco IOS XE Software could allow an authenticated, remote attacker to crash the web server on the device.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001"
]
},
"references": [
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-3516"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
}
],
"remediations": [
{
"category": "mitigation",
"details": "Rockwell Automation has addressed these vulnerabilities updates and encourages users to combine these updates with Rockwell Automation\u0027s Security Best Practices:",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight"
},
{
"category": "mitigation",
"details": "(CVE-2020-3516) Stratix 5800 switches: Update to Stratix 5800 v17.04.01 or later",
"product_ids": [
"CSAFPID-0001"
],
"url": "https://compatibility.rockwellautomation.com/Pages/ProductReplacement.aspx?crumb=101\u0026restore=1\u0026vid=59821"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
"version": "3.0"
},
"products": [
"CSAFPID-0001"
]
}
]
}
]
}
CERTFR-2021-AVI-219
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans les produits Cisco. Certaines d'entre elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur, une exécution de code arbitraire à distance et un déni de service à distance.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Cisco | N/A | Cisco Catalyst IE3400 Heavy Duty Series Switches | ||
| Cisco | N/A | Cisco Catalyst IE3400 Rugged Series Switches | ||
| Cisco | IOS XE | Cisco IOS XE SD-WAN Software | ||
| Cisco | N/A | Cisco Catalyst 9100 APs | ||
| Cisco | N/A | Cisco Aironet 2800 Series APs | ||
| Cisco | N/A | Cisco Aironet 1540 Series APs | ||
| Cisco | IOS XE | Cisco IOS XE Software | ||
| Cisco | N/A | Cisco Catalyst 9300L | ||
| Cisco | N/A | Cisco Aironet 1800 Series APs | ||
| Cisco | N/A | Cisco Aironet 4800 APs | ||
| Cisco | Jabber | Cisco Jabber for MacOS | ||
| Cisco | N/A | Cisco Catalyst 3850 | ||
| Cisco | N/A | Cisco Catalyst C9500-48Y4C Switch | ||
| Cisco | N/A | Cisco Catalyst 9800 Embedded Wireless Controller for Catalyst 9300, 9400, and 9500 Series Switches | ||
| Cisco | Jabber | Cisco Jabber for mobile platforms | ||
| Cisco | N/A | Cisco Catalyst IW 6300 APs | ||
| Cisco | N/A | Cisco Catalyst 9800 Series Wireless Controllers | ||
| Cisco | N/A | Cisco Catalyst 9400 Series Switches | ||
| Cisco | N/A | Cisco Catalyst 9600 Series Switches | ||
| Cisco | N/A | Cisco Catalyst 9300 | ||
| Cisco | Jabber | Cisco Jabber for Windows | ||
| Cisco | N/A | Cisco Catalyst C9500-24Y4C Switch | ||
| Cisco | N/A | Cisco Catalyst IE3300 Rugged Series Switches | ||
| Cisco | N/A | Cisco Aironet 3800 Series APs | ||
| Cisco | N/A | Cisco Catalyst C9500-32QC Switch | ||
| Cisco | N/A | Cisco Catalyst IE3200 Rugged Series Switches | ||
| Cisco | N/A | Cisco Catalyst C9500-32C Switch | ||
| Cisco | N/A | Cisco Aironet 1560 Series APs |
References
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Cisco Catalyst IE3400 Heavy Duty Series Switches",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst IE3400 Rugged Series Switches",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco IOS XE SD-WAN Software",
"product": {
"name": "IOS XE",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst 9100 APs",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Aironet 2800 Series APs",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Aironet 1540 Series APs",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco IOS XE Software",
"product": {
"name": "IOS XE",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst 9300L",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Aironet 1800 Series APs",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Aironet 4800 APs",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Jabber for MacOS",
"product": {
"name": "Jabber",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst 3850",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst C9500-48Y4C Switch",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst 9800 Embedded Wireless Controller for Catalyst 9300, 9400, and 9500 Series Switches",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Jabber for mobile platforms",
"product": {
"name": "Jabber",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst IW 6300 APs",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst 9800 Series Wireless Controllers",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst 9400 Series Switches",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst 9600 Series Switches",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst 9300",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Jabber for Windows",
"product": {
"name": "Jabber",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst C9500-24Y4C Switch",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst IE3300 Rugged Series Switches",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Aironet 3800 Series APs",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst C9500-32QC Switch",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst IE3200 Rugged Series Switches",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Catalyst C9500-32C Switch",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
},
{
"description": "Cisco Aironet 1560 Series APs",
"product": {
"name": "N/A",
"vendor": {
"name": "Cisco",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2021-1441",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1441"
},
{
"name": "CVE-2021-1411",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1411"
},
{
"name": "CVE-2021-1376",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1376"
},
{
"name": "CVE-2021-1373",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1373"
},
{
"name": "CVE-2021-1453",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1453"
},
{
"name": "CVE-2021-1375",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1375"
},
{
"name": "CVE-2021-1446",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1446"
},
{
"name": "CVE-2021-1437",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1437"
},
{
"name": "CVE-2021-1417",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1417"
},
{
"name": "CVE-2021-1392",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1392"
},
{
"name": "CVE-2021-1398",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1398"
},
{
"name": "CVE-2021-1471",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1471"
},
{
"name": "CVE-2021-1452",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1452"
},
{
"name": "CVE-2021-1449",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1449"
},
{
"name": "CVE-2021-1439",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1439"
},
{
"name": "CVE-2021-1418",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1418"
},
{
"name": "CVE-2021-1469",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1469"
},
{
"name": "CVE-2021-1403",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1403"
},
{
"name": "CVE-2021-1451",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1451"
},
{
"name": "CVE-2021-1432",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1432"
},
{
"name": "CVE-2021-1433",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1433"
},
{
"name": "CVE-2021-1442",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1442"
},
{
"name": "CVE-2021-1431",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1431"
},
{
"name": "CVE-2021-1352",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-1352"
}
],
"initial_release_date": "2021-03-25T00:00:00",
"last_revision_date": "2021-03-25T00:00:00",
"links": [
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-cisco-jabber-PWrTATTC du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cisco-jabber-PWrTATTC"
}
],
"reference": "CERTFR-2021-AVI-219",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2021-03-25T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Cisco.\nCertaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer un\nprobl\u00e8me de s\u00e9curit\u00e9 non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur, une ex\u00e9cution de code\narbitraire \u00e0 distance et un d\u00e9ni de service \u00e0 distance.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Cisco",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-aironet-mdns-dos-E6KwYuMx du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironet-mdns-dos-E6KwYuMx"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-iosxe-romvar-cmd-inj-N56fYbrw du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-romvar-cmd-inj-N56fYbrw"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-iosxe-buffover-CqdRWLc du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-buffover-CqdRWLc"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-fast-Zqr6DD5 du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fast-Zqr6DD5"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ios-xe-cat-verify-BQ5hrXgH du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-cat-verify-BQ5hrXgH"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ios-xe-iot-codexec-k46EFF6q du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-iot-codexec-k46EFF6q"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-iosxe-sdwdos-4zeEeC9w du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-sdwdos-4zeEeC9w"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-aironet-info-disc-BfWqghj du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-aironet-info-disc-BfWqghj"
},
{
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},
{
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"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-alg-dos-hbBS7SZE du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-alg-dos-hbBS7SZE"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-iosxe-decnet-dos-cuPWDkyL du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-decnet-dos-cuPWDkyL"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ios-xe-evss-code-exe-8cw5VSvw du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-evss-code-exe-8cw5VSvw"
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{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-iosxe-sdwarbcmdexec-sspOMUr3 du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-sdwarbcmdexec-sspOMUr3"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-XE-ACE-75K3bRWe du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-XE-ACE-75K3bRWe"
},
{
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"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ewlc-capwap-dos-2OA3JgKS du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewlc-capwap-dos-2OA3JgKS"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ios-xe-pnp-priv-esc-AmG3kuVL du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-pnp-priv-esc-AmG3kuVL"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-XE-SAP-OPLbze68 du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-XE-SAP-OPLbze68"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-ap-privesc-wEVfp8Ud du 24 mars 2021",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ap-privesc-wEVfp8Ud"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco cisco-sa-cisco-jabber-PWrTATTChttps: du 24 mars 2021",
"url": null
}
]
}
var-202103-0768
Vulnerability from variot
A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic. Cisco IOS XE Exists in an exceptional condition check vulnerability.Service operation interruption (DoS) It may be in a state. Cisco IOS XE Software is an operating system of Cisco (Cisco). A single operating system for enterprise wired and wireless access, aggregation, core, and WAN, Cisco IOS XE reduces business and network complexity
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fkie_cve-2021-1446
Vulnerability from fkie_nvd
Published
2021-03-24 20:15
Modified
2024-11-21 05:44
Severity ?
8.6 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| cisco | ios_xe | 3.7.0bs | |
| cisco | ios_xe | 3.7.0s | |
| cisco | ios_xe | 3.7.0xas | |
| cisco | ios_xe | 3.7.0xbs | |
| cisco | ios_xe | 3.7.1as | |
| cisco | ios_xe | 3.7.1s | |
| cisco | ios_xe | 3.7.2s | |
| cisco | ios_xe | 3.7.2ts | |
| cisco | ios_xe | 3.7.3s | |
| cisco | ios_xe | 3.7.4as | |
| cisco | ios_xe | 3.7.4s | |
| cisco | ios_xe | 3.7.5s | |
| cisco | ios_xe | 3.7.6s | |
| cisco | ios_xe | 3.7.7s | |
| cisco | ios_xe | 3.7.8s | |
| cisco | ios_xe | 3.8.0s | |
| cisco | ios_xe | 3.8.1s | |
| cisco | ios_xe | 3.8.2s | |
| cisco | ios_xe | 3.9.0as | |
| cisco | ios_xe | 3.9.0s | |
| cisco | ios_xe | 3.9.0xas | |
| cisco | ios_xe | 3.9.1as | |
| cisco | ios_xe | 3.9.1s | |
| cisco | ios_xe | 3.9.2s | |
| cisco | ios_xe | 3.10.0s | |
| cisco | ios_xe | 3.10.1s | |
| cisco | ios_xe | 3.10.1xbs | |
| cisco | ios_xe | 3.10.1xcs | |
| cisco | ios_xe | 3.10.2as | |
| cisco | ios_xe | 3.10.2s | |
| cisco | ios_xe | 3.10.2ts | |
| cisco | ios_xe | 3.10.3s | |
| cisco | ios_xe | 3.10.4s | |
| cisco | ios_xe | 3.10.5s | |
| cisco | ios_xe | 3.10.6s | |
| cisco | ios_xe | 3.10.7s | |
| cisco | ios_xe | 3.10.8as | |
| cisco | ios_xe | 3.10.8s | |
| cisco | ios_xe | 3.10.9s | |
| cisco | ios_xe | 3.10.10s | |
| cisco | ios_xe | 3.11.0s | |
| cisco | ios_xe | 3.11.1s | |
| cisco | ios_xe | 3.11.2s | |
| cisco | ios_xe | 3.11.3s | |
| cisco | ios_xe | 3.11.4s | |
| cisco | ios_xe | 3.12.0as | |
| cisco | ios_xe | 3.12.0s | |
| cisco | ios_xe | 3.12.1s | |
| cisco | ios_xe | 3.12.2s | |
| cisco | ios_xe | 3.12.3s | |
| cisco | ios_xe | 3.12.4s | |
| cisco | ios_xe | 3.13.0as | |
| cisco | ios_xe | 3.13.0s | |
| cisco | ios_xe | 3.13.1s | |
| cisco | ios_xe | 3.13.2as | |
| cisco | ios_xe | 3.13.2s | |
| cisco | ios_xe | 3.13.3s | |
| cisco | ios_xe | 3.13.4s | |
| cisco | ios_xe | 3.13.5as | |
| cisco | ios_xe | 3.13.5s | |
| cisco | ios_xe | 3.13.6as | |
| cisco | ios_xe | 3.13.6bs | |
| cisco | ios_xe | 3.13.6s | |
| cisco | ios_xe | 3.13.7as | |
| cisco | ios_xe | 3.13.7s | |
| cisco | ios_xe | 3.13.8s | |
| cisco | ios_xe | 3.13.9s | |
| cisco | ios_xe | 3.13.10s | |
| cisco | ios_xe | 3.14.0s | |
| cisco | ios_xe | 3.14.1s | |
| cisco | ios_xe | 3.14.2s | |
| cisco | ios_xe | 3.14.3s | |
| cisco | ios_xe | 3.14.4s | |
| cisco | ios_xe | 3.15.0s | |
| cisco | ios_xe | 3.15.1cs | |
| cisco | ios_xe | 3.15.1s | |
| cisco | ios_xe | 3.15.1xbs | |
| cisco | ios_xe | 3.15.2s | |
| cisco | ios_xe | 3.15.2xbs | |
| cisco | ios_xe | 3.15.3s | |
| cisco | ios_xe | 3.15.4s | |
| cisco | ios_xe | 3.16.0as | |
| cisco | ios_xe | 3.16.0bs | |
| cisco | ios_xe | 3.16.0cs | |
| cisco | ios_xe | 3.16.0s | |
| cisco | ios_xe | 3.16.1as | |
| cisco | ios_xe | 3.16.1s | |
| cisco | ios_xe | 3.16.2as | |
| cisco | ios_xe | 3.16.2bs | |
| cisco | ios_xe | 3.16.2s | |
| cisco | ios_xe | 3.16.3as | |
| cisco | ios_xe | 3.16.3s | |
| cisco | ios_xe | 3.16.4as | |
| cisco | ios_xe | 3.16.4bs | |
| cisco | ios_xe | 3.16.4cs | |
| cisco | ios_xe | 3.16.4ds | |
| cisco | ios_xe | 3.16.4es | |
| cisco | ios_xe | 3.16.4gs | |
| cisco | ios_xe | 3.16.4s | |
| cisco | ios_xe | 3.16.5as | |
| cisco | ios_xe | 3.16.5bs | |
| cisco | ios_xe | 3.16.5s | |
| cisco | ios_xe | 3.16.6bs | |
| cisco | ios_xe | 3.16.6s | |
| cisco | ios_xe | 3.16.7as | |
| cisco | ios_xe | 3.16.7bs | |
| cisco | ios_xe | 3.16.7s | |
| cisco | ios_xe | 3.16.8s | |
| cisco | ios_xe | 3.16.9s | |
| cisco | ios_xe | 3.16.10as | |
| cisco | ios_xe | 3.16.10s | |
| cisco | ios_xe | 3.17.0s | |
| cisco | ios_xe | 3.17.1as | |
| cisco | ios_xe | 3.17.1s | |
| cisco | ios_xe | 3.17.2s | |
| cisco | ios_xe | 3.17.3s | |
| cisco | ios_xe | 3.17.4s | |
| cisco | ios_xe | 3.18.0as | |
| cisco | ios_xe | 3.18.0s | |
| cisco | ios_xe | 3.18.0sp | |
| cisco | ios_xe | 3.18.1asp | |
| cisco | ios_xe | 3.18.1bsp | |
| cisco | ios_xe | 3.18.1csp | |
| cisco | ios_xe | 3.18.1gsp | |
| cisco | ios_xe | 3.18.1hsp | |
| cisco | ios_xe | 3.18.1isp | |
| cisco | ios_xe | 3.18.1s | |
| cisco | ios_xe | 3.18.1sp | |
| cisco | ios_xe | 3.18.2asp | |
| cisco | ios_xe | 3.18.2s | |
| cisco | ios_xe | 3.18.2sp | |
| cisco | ios_xe | 3.18.3asp | |
| cisco | ios_xe | 3.18.3bsp | |
| cisco | ios_xe | 3.18.3s | |
| cisco | ios_xe | 3.18.3sp | |
| cisco | ios_xe | 3.18.4s | |
| cisco | ios_xe | 3.18.4sp | |
| cisco | ios_xe | 3.18.5sp | |
| cisco | ios_xe | 3.18.6sp | |
| cisco | ios_xe | 3.18.7sp | |
| cisco | ios_xe | 3.18.8asp | |
| cisco | ios_xe | 3.18.8sp | |
| cisco | ios_xe | 16.1.1 | |
| cisco | ios_xe | 16.1.2 | |
| cisco | ios_xe | 16.1.3 | |
| cisco | ios_xe | 16.2.1 | |
| cisco | ios_xe | 16.2.2 | |
| cisco | ios_xe | 16.3.1 | |
| cisco | ios_xe | 16.3.1a | |
| cisco | ios_xe | 16.3.2 | |
| cisco | ios_xe | 16.3.3 | |
| cisco | ios_xe | 16.3.4 | |
| cisco | ios_xe | 16.3.5 | |
| cisco | ios_xe | 16.3.5b | |
| cisco | ios_xe | 16.3.6 | |
| cisco | ios_xe | 16.3.7 | |
| cisco | ios_xe | 16.3.8 | |
| cisco | ios_xe | 16.3.9 | |
| cisco | ios_xe | 16.3.10 | |
| cisco | ios_xe | 16.3.11 | |
| cisco | ios_xe | 16.4.1 | |
| cisco | ios_xe | 16.4.2 | |
| cisco | ios_xe | 16.4.3 | |
| cisco | ios_xe | 16.5.1 | |
| cisco | ios_xe | 16.5.1a | |
| cisco | ios_xe | 16.5.1b | |
| cisco | ios_xe | 16.5.2 | |
| cisco | ios_xe | 16.5.3 | |
| cisco | ios_xe | 16.6.1 | |
| cisco | ios_xe | 16.6.2 | |
| cisco | ios_xe | 16.6.3 | |
| cisco | ios_xe | 16.6.4 | |
| cisco | ios_xe | 16.6.4a | |
| cisco | ios_xe | 16.6.4s | |
| cisco | ios_xe | 16.6.5 | |
| cisco | ios_xe | 16.6.5a | |
| cisco | ios_xe | 16.6.5b | |
| cisco | ios_xe | 16.6.6 | |
| cisco | ios_xe | 16.6.7 | |
| cisco | ios_xe | 16.6.7a | |
| cisco | ios_xe | 16.6.8 | |
| cisco | ios_xe | 16.7.1 | |
| cisco | ios_xe | 16.7.1a | |
| cisco | ios_xe | 16.7.1b | |
| cisco | ios_xe | 16.7.2 | |
| cisco | ios_xe | 16.7.3 | |
| cisco | ios_xe | 16.7.4 | |
| cisco | ios_xe | 16.8.1 | |
| cisco | ios_xe | 16.8.1a | |
| cisco | ios_xe | 16.8.1b | |
| cisco | ios_xe | 16.8.1c | |
| cisco | ios_xe | 16.8.1d | |
| cisco | ios_xe | 16.8.1e | |
| cisco | ios_xe | 16.8.1s | |
| cisco | ios_xe | 16.8.2 | |
| cisco | ios_xe | 16.8.3 | |
| cisco | ios_xe | 16.9.1 | |
| cisco | ios_xe | 16.9.1a | |
| cisco | ios_xe | 16.9.1b | |
| cisco | ios_xe | 16.9.1c | |
| cisco | ios_xe | 16.9.1d | |
| cisco | ios_xe | 16.9.1s | |
| cisco | ios_xe | 16.9.2 | |
| cisco | ios_xe | 16.9.2a | |
| cisco | ios_xe | 16.9.2s | |
| cisco | ios_xe | 16.9.3 | |
| cisco | ios_xe | 16.9.3a | |
| cisco | ios_xe | 16.9.3h | |
| cisco | ios_xe | 16.9.3s | |
| cisco | ios_xe | 16.9.4 | |
| cisco | ios_xe | 16.9.4c | |
| cisco | ios_xe | 16.9.5 | |
| cisco | ios_xe | 16.9.5f | |
| cisco | ios_xe | 16.9.6 | |
| cisco | ios_xe | 16.10.1 | |
| cisco | ios_xe | 16.10.1a | |
| cisco | ios_xe | 16.10.1b | |
| cisco | ios_xe | 16.10.1c | |
| cisco | ios_xe | 16.10.1d | |
| cisco | ios_xe | 16.10.1e | |
| cisco | ios_xe | 16.10.1f | |
| cisco | ios_xe | 16.10.1g | |
| cisco | ios_xe | 16.10.1s | |
| cisco | ios_xe | 16.10.2 | |
| cisco | ios_xe | 16.10.3 | |
| cisco | ios_xe | 16.11.1 | |
| cisco | ios_xe | 16.11.1a | |
| cisco | ios_xe | 16.11.1b | |
| cisco | ios_xe | 16.11.1c | |
| cisco | ios_xe | 16.11.1s | |
| cisco | ios_xe | 16.11.2 | |
| cisco | ios_xe | 16.12.1 | |
| cisco | ios_xe | 16.12.1a | |
| cisco | ios_xe | 16.12.1c | |
| cisco | ios_xe | 16.12.1s | |
| cisco | ios_xe | 16.12.1t | |
| cisco | ios_xe | 16.12.1w | |
| cisco | ios_xe | 16.12.1x | |
| cisco | ios_xe | 16.12.1y | |
| cisco | ios_xe | 16.12.1z | |
| cisco | ios_xe | 16.12.1z1 | |
| cisco | ios_xe | 16.12.1za | |
| cisco | ios_xe | 16.12.2 | |
| cisco | ios_xe | 16.12.2a | |
| cisco | ios_xe | 16.12.2s | |
| cisco | ios_xe | 16.12.2t | |
| cisco | ios_xe | 16.12.3 | |
| cisco | ios_xe | 16.12.3a | |
| cisco | ios_xe | 16.12.3s | |
| cisco | ios_xe | 16.12.4 | |
| cisco | ios_xe | 16.12.4a | |
| cisco | ios_xe | 17.1.1 | |
| cisco | ios_xe | 17.1.1a | |
| cisco | ios_xe | 17.1.1s | |
| cisco | ios_xe | 17.1.1t | |
| cisco | ios_xe | 17.1.2 | |
| cisco | ios_xe | 17.2.1 | |
| cisco | ios_xe | 17.2.1a | |
| cisco | ios_xe | 17.2.1r | |
| cisco | ios_xe | 17.2.1v | |
| cisco | ios_xe | 17.2.2 | |
| cisco | ios_xe | 17.2.3 | |
| cisco | ios_xe | 17.3.1 | |
| cisco | ios_xe | 17.3.1a | |
| cisco | ios_xe | 17.3.1w |
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gsd-2021-1446
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-1446",
"description": "A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.",
"id": "GSD-2021-1446"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
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"osvSchema": {
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"id": "GSD-2021-1446",
"modified": "2023-12-13T01:23:22.409409Z",
"schema_version": "1.4.0"
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"STATE": "PUBLIC",
"TITLE": "Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnerability"
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"affects": {
"vendor": {
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"value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. "
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"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "psirt@cisco.com",
"ID": "CVE-2021-1446"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-754"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "20210324 Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnerability",
"refsource": "CISCO",
"tags": [
"Vendor Advisory"
],
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-alg-dos-hbBS7SZE"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "HIGH",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2021-03-29T18:59Z",
"publishedDate": "2021-03-24T20:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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