SB2023011042 - Privilege escalation in Windows Advanced Local Procedure Call (ALPC)
Published: January 10, 2023 Updated: May 13, 2024
Security Bulletin ID
SB2023011042
Severity
High
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-2023-21674)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the Windows Advanced Local Procedure Call (ALPC). A local user can trigger memory corruption and execute arbitrary code with SYSTEM privileges.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.