Check Point Advisories

Microsoft Windows Session Object Elevation of Privilege (MS16-111: CVE-2016-3305)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0761
Date Published:	13 Sep 2016
Severity:	High
Last Updated:	Tuesday 13 September, 2016
Source:	Microsoft MS16-111
Industry Reference:	CVE-2016-3305
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 Server 2012 Windows Server 2012 R2 Windows RT 8.1 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 32-bit Systems Windows 10 Version 1607 for x64-based Systems Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2012
Vulnerability Description	An elevation of privilege vulnerability exists in Microsoft Windows. The vulnerability is due to an error in the way windows kernel handles session objects in concurrent logins. Successful exploitation may lead to a malicious user gaining access to a victim user's session.
Update/Patch Avaliable	Apply patches from: MS16-111

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 Session Object Elevation of Privilege (MS16-111: CVE-2016-3305) 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 Session Object Elevation of Privilege (MS16-111: CVE-2016-3305)