Check Point Advisories

Microsoft Win32k Elevation of Privilege (CVE-2023-35631)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-1277
Date Published:	12 Dec 2023
Severity:	High
Last Updated:	Tuesday 12 December, 2023
Source:	Microsoft CVE-2023-35631
Industry Reference:	CVE-2023-35631
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows 11 version 21H2 for x64-based Systems Windows 11 version 21H2 for ARM64-based Systems Windows 11 Version 22H2 for ARM64-based Systems Windows 11 Version 22H2 for x64-based Systems Windows 11 Version 23H2 for ARM64-based Systems Windows 11 Version 23H2 for x64-based Systems Windows Server 2022, 23H2 Edition (Server Core installation)
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 Win32k Elevation of Privilege (CVE-2023-35631) 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 Win32k Elevation of Privilege (CVE-2023-35631)