var-201903-0586
Vulnerability from variot
A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level by executing commands authorized to other user roles. The attacker must authenticate with valid user credentials. The vulnerability is due to the incorrect implementation of a Bash shell command that allows role-based access control (RBAC) to be bypassed. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level by executing commands that should be restricted to other roles. For example, a dev-ops user could escalate their privilege level to admin with a successful exploit of this vulnerability. Cisco NX-OS The software contains vulnerabilities related to authorization, permissions, and access control.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. Cisco NX-OS Software is prone to a local privilege-escalation vulnerability. A local attacker may exploit this issue to gain elevated system privileges on the device. This issue is being tracked by Cisco Bug IDs CSCvj59431, CSCvj59446, CSCvk52940, CSCvk52941. Cisco Nexus 9500 R-Series Line Cards and Fabric Modules are all products of Cisco (Cisco). Cisco Nexus 9500 R-Series Line Cards and Fabric Modules is a 9500R series line card module. Cisco Nexus 3000 Series Switches is a 3000 series switch. Cisco Nexus 3500 Platform Switches is a 3500 series platform switch. The following products are affected: Cisco Nexus 3000 Series Switches; Nexus 3500 Platform Switches; Nexus 3600 Platform Switches; Nexus 7000 Series Switches; Nexus 7700 Series Switches; standalone NX-OS mode; Nexus 9500 R-Series Line Cards and Fabric Modules
Show details on source website{
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"data": "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, or otherwise using such software upgrades, accessing, customers agree to follow the terms of the Cisco software license: https://www.cisco.com/c/en/us/products/end-user-license-agreement.html Additionally, customers should consider that this advisory is part of a bundled publication. The following page provides a complete list of bundle advisories: Cisco?Event Response: March 2019 Cisco?FXOS and NX-OS Software Security Advisory Bundled Publication. In the following tables, refer to the Recommended Releases documents in the release notes for the device., the left column lists releases of Cisco?FXOS Software or Cisco?NX-OS Software. The center column indicates whether a release is affected by the vulnerability described in this advisory and the first release that includes the fix for this vulnerability. The right column indicates whether a release is affected by all the vulnerabilities described in this bundle and which release includes fixes for those vulnerabilities. Although the releases listed in the right column of each table include fixes for the vulnerabilities, which are available from the Cisco Security Advisories and Alerts page, 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 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. Fixed Releases Customers are advised to upgrade to an appropriate release as indicated in the applicable table in this section. To help ensure a complete upgrade solution, administrators can refer to the following Recommended Releases documents.?If a security advisory recommends a later release, or major revision upgrades. When considering software upgrades,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, Cisco recommends following the advisory guidance. Cisco MDS Series Switches Cisco Nexus 1000V for VMware Switch Cisco Nexus 3000 Series and 3500 Series Switches Cisco Nexus 5000 Series Switches Cisco Nexus 5500 Platform Switches Cisco Nexus 6000 Series Switches Cisco Nexus 7000 Series Switches Cisco Nexus 9000 Series Switches Cisco Nexus 9000 Series ACI-Mode Switches For help determining the best Cisco NX-OS Software release for Cisco UCS, the fix related to the Cisco NX-OS Software Image Signature Verification Vulnerability requires a BIOS upgrade as part of the software upgrade. Customers who are upgrading the software for any of the following products are advised to refer to this advisory for further details about the BIOS upgrade and affected product IDs and BIOS versions: Nexus 3000 Series Switches Nexus 9000 Series Fabric Switches in ACI mode Nexus 9000 Series Switches in standalone NX-OS mode Nexus 9500 R-Series Line Cards and Fabric Modules Nexus 3000 Series Switches: CSCvj59431 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 7.0(3)I2(1) Not vulnerable 7.0(3)I7(6) 7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6) 7.0(3)I5 7.0(3)I7(4) 7.0(3)I7(6) 7.0(3)I6 7.0(3)I7(4) 7.0(3)I7(6)? 7.0(3)I7 7.0(3)I7(4) 7.0(3)I7(6)? 9.2 Not vulnerable 9.2(2) Nexus 3500 Platform Switches: CSCvj59431 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 6.0(2)A8 Not vulnerable 6.0(2)A8(11)? 6.0(2)A8 Not vulnerable? 6.0(2)A8(11)? 7.0(3) 7.0(3)I7(4) 7.0(3)I7(6)? 9.2 Not vulnerable 9.2(2) Nexus 3600 Platform Switches: CSCvk52941 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories 7.0(3) 7.0(3)F3(3c)1 7.0(3)F3(5)? 9.2 Not vulnerable 9.2(2) 1This vulnerability is not fixed in 7.0(3)F3(4) but is fixed in 7.0(3)F3(5). Nexus 7000 and 7700 Series Switches: CSCvj59446 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories 6.2 Not vulnerable? 6.2(22) 7.2 Not vulnerable? 6.2(22)? 7.3 Not vulnerable? 8.2(3)? 8.0 Not vulnerable 8.2(3) 8.11 8.2(3) 8.2(3) 8.2 8.2(3) 8.2(3)? 8.3 8.3(1) 8.3(2) 1The Nexus 7000 and 7700 Series Switches did not support Bash until the 8.1 software release. Nexus 9000 Series Fabric Switches in ACI Mode: CSCvk52940 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 13.1 13.2(4d) 14.0(3d) 13.1 13.2(4d) 14.0(3d) 13.2 13.2(4d) 14.0(3d) 14.0 14.0(1h) 14.0(3d) Nexus 9000 Series Switches in Standalone NX-OS Mode: CSCvj59431 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories Prior to 7.0(3)I2(1) Not vulnerable 7.0(3)I7(6)? 7.0(3)I4 7.0(3)I4(9) 7.0(3)I7(6) 7.0(3)I5 7.0(3)I7(4) 7.0(3)I7(6)? 7.0(3)I6 7.0(3)I7(4) 7.0(3)I7(6)? 7.0(3)I7 7.0(3)I7(4) 7.0(3)I7(6) 9.2 Not vulnerable 9.2(2) Nexus 9500 R-Series Line Cards and Fabric Modules: CSCvk52941 Cisco NX-OS Software Release First Fixed Release for This Vulnerability First Fixed Release for All Vulnerabilities Described in the Bundle of Advisories 7.0(3) 7.0(3)F3(3c)1 7.0(3)F3(5) 9.2 Not vulnerable 9.2(2) 1This vulnerability is not fixed in 7.0(3)F3(4) but is fixed in 7.0(3)F3(5). Additional Resources For help determining the best Cisco NX-OS Software release for a Cisco Nexus Switch, to determine exposure and a complete upgrade solution. In all cases, procured from Cisco directly, 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 may only download software for which they have a valid license, additional software feature sets, customers are advised to regularly consult the advisories for Cisco products, downloading",
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"data": "A vulnerability in the Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level by executing commands authorized to other user roles. The attacker must authenticate with valid user credentials. The vulnerability is due to the incorrect implementation of a Bash shell command that allows role-based access control (RBAC) to be bypassed. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level by executing commands that should be restricted to other roles. For example, a dev-ops user could escalate their privilege level to admin with a successful exploit of this vulnerability. Cisco NX-OS The software contains vulnerabilities related to authorization, permissions, and access control.Information is obtained, information is altered, and service operation is disrupted (DoS) There is a possibility of being put into a state. Cisco NX-OS Software is prone to a local privilege-escalation vulnerability. \nA local attacker may exploit this issue to gain elevated system privileges on the device. \nThis issue is being tracked by Cisco Bug IDs CSCvj59431, CSCvj59446, CSCvk52940, CSCvk52941. Cisco Nexus 9500 R-Series Line Cards and Fabric Modules are all products of Cisco (Cisco). Cisco Nexus 9500 R-Series Line Cards and Fabric Modules is a 9500R series line card module. Cisco Nexus 3000 Series Switches is a 3000 series switch. Cisco Nexus 3500 Platform Switches is a 3500 series platform switch. The following products are affected: Cisco Nexus 3000 Series Switches; Nexus 3500 Platform Switches; Nexus 3600 Platform Switches; Nexus 7000 Series Switches; Nexus 7700 Series Switches; standalone NX-OS mode; Nexus 9500 R-Series Line Cards and Fabric Modules",
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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.