SB2024071078 - Secure boot bypass in Cisco IOS XR
Published: July 10, 2024
Security Bulletin ID
SB2024071078
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) Incorrect permission assignment for critical resource (CVE-ID: CVE-2024-20456)
The vulnerability allows a local user to bypass secure boot protections.
The vulnerability exists due to an error in the software build process. A local user can bypass the Cisco Secure Boot functionality and load unverified software on an affected device.
Remediation
Install update from vendor's website.