Check Point Advisories

Microsoft Office Memory Corruption (MS16-121: CVE-2016-7193)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0866
Date Published:	11 Oct 2016
Severity:	Critical
Last Updated:	Wednesday 10 May, 2017
Source:	Microsoft MS16-121
Industry Reference:	CVE-2016-7193
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Word Automation Services on Microsoft SharePoint Server 2010 Service Pack 2 Microsoft Office Web Apps 2010 Service Pack 2 Word Automation Services on Microsoft SharePoint Server 2013 Service Pack 1 Microsoft Office Web Apps Server 2013 Service Pack 1 Office Online Server
Vulnerability Description	A buffer overflow vulnerability exists in the Word's RTF parser. The vulnerability is due to invalid parsing of RTF files. By enticing the user to open a specially crafted RTF file, an attacker could exploit this vulnerability to execute arbitrary code on the affected system.
Update/Patch Avaliable	Apply patches from: MS16-121

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 (MS16-121: CVE-2016-7193) 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 (MS16-121: CVE-2016-7193)