Check Point Advisories

Microsoft Win32k Elevation of Privilege (MS16-123: CVE-2016-3266)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0849
Date Published:	11 Oct 2016
Severity:	High
Last Updated:	Tuesday 11 October, 2016
Source:	Microsoft MS16-123
Industry Reference:	CVE-2016-3266
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows Vista Windows Server 2008 Windows 7 Windows Server 2008 R2 Windows 8.1 Windows Server 2012 and Windows Server 2012 R2 Windows RT 8.1 Windows 10
Vulnerability Description	An elevation of privilege vulnerability exists in Microsoft Windows. The vulnerability is caused when the Windows kernel-mode driver fails to properly handle objects in memory. A remote attacker could exploit this vulnerability by running a specially crafted application.
Update/Patch Avaliable	Apply patches from: MS16-123

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 R80 / R77 / R75

In the IPS tab, click Protections and find the Microsoft Win32k Elevation of Privilege (MS16-123: CVE-2016-3266) 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: Web Client Enforcement Violation.
Attack Information: Microsoft Win32k Elevation of Privilege (MS16-123: CVE-2016-3266)