SB2021020501 - Privilege escalation in Cisco IOS XR Software for Cisco 8000 Series Routers and Network Convergence System 540 Series Routers
Published: February 5, 2021
Security Bulletin ID
SB2021020501
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) OS Command Injection (CVE-ID: CVE-2021-1370)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to improper input validation within the CLI command of Cisco IOS XR Software for the Cisco 8000 Series
Routers and Network Convergence System 540 Series Routers running
NCS540L software images. A local user can run a specially crafted command and execute arbitrary code on the system with root privileges.
Remediation
Install update from vendor's website.