Check Point Advisories

Microsoft Internet Explorer Scripting Engine Memory Corruption (MS16-051: CVE-2016-0187)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0344
Date Published:	10 May 2016
Severity:	Critical
Last Updated:	Tuesday 10 May, 2016
Source:	Microsoft MS16-051
Industry Reference:	CVE-2016-0187
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 Systems Service Pack 2 Windows Server 2012 Windows 7 Systems Service Pack 1 Windows Server 2008 R2 Systems Service Pack 1 Windows 8.1 Systems Windows Server 2012 R2 Windows RT 8.1 Windows 10 Systems Windows 10 Version 1511 Systems
Vulnerability Description	A use-after-free vulnerability was detected in Microsoft Internet Explorer in the handling of BooleanProtoObj objects. The underlying vulnerability lies in jscript!JSONStringifyArray where a previously released object is reused.
Update/Patch Avaliable	Apply patches from: MS16-051

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 Internet Explorer Scripting Engine Memory Corruption (MS16-051: CVE-2016-0187) 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 Internet Explorer Scripting Engine Memory Corruption (MS16-051: CVE-2016-0187)