Check Point Advisories

Microsoft Win32k Elevation of Privilege (MS16-073: CVE-2016-3221)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0437
Date Published:	14 Jun 2016
Severity:	High
Last Updated:	Tuesday 14 June, 2016
Source:	Microsoft MS16-073
Industry Reference:	CVE-2016-3221
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 Windows Server 2012 R2 Windows RT Windows 10 Windows (Server Core installation) Windows Server 2008 for x64-based Systems (Server Core installation) Windows (Server Core installation) Windows Server 2012 (Server Core installation) Windows Server 2012 R2 (Server Core installation)
Vulnerability Description	A null pointer dereference vulnerability exists in Microsoft Windows. The root cause comes from win32k sub component when handling desktop creation. If successfully exploited, an attacker could elevate his privileges on the local system.
Update/Patch Avaliable	Apply patches from: MS16-073

Protection Overview

This protection will detect and block 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 (MS16-073: CVE-2016-3221) 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 (MS16-073: CVE-2016-3221)