Check Point Advisories

Microsoft Local Security Authority Subsystem Service Elevation of Privilege (CVE-2023-36391)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-1274
Date Published:	12 Dec 2023
Severity:	High
Last Updated:	Tuesday 12 December, 2023
Source:	Microsoft CVE-2023-36391
Industry Reference:	CVE-2023-36391
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows 11 Version 23H2 for ARM64-based Systems Windows 11 Version 23H2 for x64-based Systems
Vulnerability Description	A privilege escalation vulnerability exists in Microsoft Windows. Successful exploitation of this vulnerability would allow a remote attacker to gain unauthorized access to the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft Local Security Authority Subsystem Service Elevation of Privilege (CVE-2023-36391) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Content Protection Violation.
Attack Information: Microsoft Local Security Authority Subsystem Service Elevation of Privilege (CVE-2023-36391)