cnvd - cnvd-2021-43444

cnvd-2021-43444

Vulnerability from cnvd

Title: Cisco IOS和IOS XE拒绝服务漏洞（CNVD-2021-43444）

Description:

Cisco IOS和IOS XE都是美国Cisco公司为其网络设备开发的操作系统。

Cisco IOS和IOS XE的ISDN子系统存在拒绝服务漏洞，攻击者可通过发送恶意 ISDN Q.931消息利用该漏洞导致进程崩溃，从而会导致设备重新加载。

Severity: 中

Patch Name: Cisco IOS和IOS XE拒绝服务漏洞（CNVD-2021-43444）的补丁

Patch Description:

Cisco IOS和IOS XE都是美国Cisco公司为其网络设备开发的操作系统。

Cisco IOS和IOS XE的ISDN子系统存在拒绝服务漏洞，攻击者可通过发送恶意 ISDN Q.931消息利用该漏洞导致进程崩溃，从而会导致设备重新加载。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-iosxe-isdn-q931-dos-67eUZBTf

Reference: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf

Impacted products

Name
['Cisco IOS', 'Cisco IOS XE']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-3511",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-3511"
    }
  },
  "description": "Cisco IOS\u548cIOS XE\u90fd\u662f\u7f8e\u56fdCisco\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nCisco IOS\u548cIOS XE\u7684ISDN\u5b50\u7cfb\u7edf\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u6076\u610f ISDN Q.931\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8fdb\u7a0b\u5d29\u6e83\uff0c\u4ece\u800c\u4f1a\u5bfc\u81f4\u8bbe\u5907\u91cd\u65b0\u52a0\u8f7d\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-iosxe-isdn-q931-dos-67eUZBTf",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-43444",
  "openTime": "2021-06-20",
  "patchDescription": "Cisco IOS\u548cIOS XE\u90fd\u662f\u7f8e\u56fdCisco\u516c\u53f8\u4e3a\u5176\u7f51\u7edc\u8bbe\u5907\u5f00\u53d1\u7684\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nCisco IOS\u548cIOS XE\u7684ISDN\u5b50\u7cfb\u7edf\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u6076\u610f ISDN Q.931\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8fdb\u7a0b\u5d29\u6e83\uff0c\u4ece\u800c\u4f1a\u5bfc\u81f4\u8bbe\u5907\u91cd\u65b0\u52a0\u8f7d\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\u548cIOS XE\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-43444\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Cisco IOS",
      "Cisco IOS XE"
    ]
  },
  "referenceLink": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf",
  "serverity": "\u4e2d",
  "submitTime": "2020-09-25",
  "title": "Cisco IOS\u548cIOS XE\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-43444\uff09"
}

CVE-2020-3511 (GCVE-0-2020-3511)

Vulnerability from cvelistv5

Published

2020-09-24 17:51

Modified

2024-11-13 18:00

Severity ?

7.4 (High) - CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-20

Summary

A vulnerability in the ISDN subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the ISDN Q.931 messages are processed. An attacker could exploit this vulnerability by sending a malicious ISDN Q.931 message to an affected device. A successful exploit could allow the attacker to cause the process to crash, resulting in a reload of the affected device.

References

▼	URL	Tags
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf	vendor-advisory, x_refsource_CISCO

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS	Version: n/a

Show details on NVD website

JSON

To clipboard

{
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            "tags": [
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              "x_refsource_CISCO",
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            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-isdn-q931-dos-67eUZBTf"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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            "other": {
              "content": {
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-13T17:23:34.355395Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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          "vendor": "Cisco",
          "versions": [
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      "metrics": [
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            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
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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.
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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