Check Point Advisories

Microsoft Windows Win32k Elevation of Privilege (MS16-135: CVE-2016-7255)

Check Point Reference: CPAI-2016-0979
Date Published: 8 Nov 2016
Severity: High
Last Updated: Tuesday 17 December, 2019
Source: Microsoft MS16-135
Industry Reference:CVE-2016-7255
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Windows 8.1 for 32-bit Systems
Windows 8.1 for x64-based Systems
Windows Server 2012
Windows Server 2012 R2
Windows 10 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 Version 1511 for 32-bit Systems
Windows 10 Version 1511 for x64-based Systems
Windows 10 Version 1607 for x64-based Systems
Windows Server 2016 for x64-based Systems
Vulnerability Description An elevation of privilege vulnerability exists in Microsoft Windows Win32k. A remote attacker can bypass a security check in win32k when Microsoft Windows improperly deals with one of its kernel components. A successful exploitation could allow an attacker to run arbitrary code with elevated privileges.
Update/Patch AvaliableApply patches from: MS16-135

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

  1. In the IPS tab, click Protections and find the Microsoft Windows Win32k Elevation of Privilege (MS16-135: CVE-2016-7255) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Content Protection Violation.
Attack Information:  Microsoft Windows Win32k Elevation of Privilege (MS16-135: CVE-2016-7255)

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