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Cisco Bug: CSCvs12604 - Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerability

Last Modified

Sep 22, 2020

Products (3)

  • Cisco Network Convergence System 5500 Series
  • Cisco NCS 6008 - 8-Slot Chassis
  • Cisco IOS XR Software

Known Affected Releases

6.6.3.BASE

Description (partial)

Symptom:
A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local CLI shell user to elevate privileges and gain full administrative control of the device.

The vulnerability is due to incorrect mapping of a command to task groups within the source code. An attacker could exploit this vulnerability by first authenticating to the local CLI shell on the device and using the CLI command to bypass the task group based checks. A successful exploit could allow the attacker to elevate privileges and perform actions on the device without authorization checks.

Cisco has released software updates that address this vulnerability. There are workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-LJtNFjeN

Conditions:
Please refer to the Security Advisory.
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Bug Details Include

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