Vulnerability details
Advisory: SB2023011042 - Privilege escalation in Windows Advanced Local Procedure Call (ALPC)
Vulnerable component: Windows
CVE-ID: CVE-2023-21674
CVSSv3 score: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C
CWE-ID: CWE-119 - Memory corruption
Description:
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.
External links:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21674