Check Point Advisories

Microsoft Windows Transaction Manager Elevation of Privilege (MS16-123: CVE-2016-3341)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0863
Date Published:	11 Oct 2016
Severity:	High
Last Updated:	Tuesday 11 October, 2016
Source:	Microsoft MS16-123
Industry Reference:	CVE-2016-3341
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Windows 8.1 for x64-based Systems Windows Server 2012 Windows Server 2012 R2 Windows RT 8.1 Windows 10 for 32-bit Systems Windows 10 for x64-based Systems
Vulnerability Description	An elevation of privilege vulnerability has been reported in Microsoft Windows Kernel Transaction Manager. The vulnerability is due to an malformed blf file, which could be abused by attackers to gain local privilege escalation. The attacker must entice the victim to run an executable file to exploit this vulnerability.
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 Windows Transaction Manager Elevation of Privilege (MS16-123: CVE-2016-3341) 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 Windows Transaction Manager Elevation of Privilege (MS16-123: CVE-2016-3341)