Check Point Advisories

Microsoft Office Memory Corruption (MS16-099: CVE-2016-3316)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0686
Date Published:	9 Aug 2016
Severity:	Critical
Last Updated:	Sunday 21 August, 2016
Source:	Microsoft MS16-099
Industry Reference:	CVE-2016-3316
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Word 2013 Service Pack 1 (32-bit editions) Microsoft Word 2013 Service Pack 1 (64-bit editions) Microsoft Word 2013 RT Service Pack 1 Microsoft Word 2016 (32-bit edition) Microsoft Word 2016 (64-bit edition) Microsoft Word 2016 for Mac
Vulnerability Description	A memory corruption vulnerability has been reported in Microsoft Word. The application fails to properly handle certain objects in memory when parsing specially crafted files with a large sprmSDyaTop value. A remote, unauthenticated attacker can exploit this vulnerability by enticing a user to open a specially crafted word document.
Update/Patch Avaliable	Apply patches from: MS16-099

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 Office Memory Corruption (MS16-099: CVE-2016-3316) 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: Content Protection Violation.
Attack Information: Microsoft Office Memory Corruption (MS16-099: CVE-2016-3316)