SB20230808106 - Privilege escalation in SMM driver on AMD processors
Published: August 8, 2023
Security Bulletin ID
SB20230808106
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) Buffer overflow (CVE-ID: CVE-2023-20555)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the CpmDisplayFeatureSmm in SMM driver. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.