Privilege escalation in Windows Advanced Local Procedure Call (ALPC)



Published: 2023-01-10
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-21674
CWE-ID CWE-119
Exploitation vector Local
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU70900

Risk: High

CVSSv3.1:

CVE-ID: CVE-2023-21674

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 8.1 - 11 22H2

Windows Server: 2012 R2 - 2022 20H2


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21674

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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