Check Point Advisories

Microsoft Office Memory Corruption (MS15-099: CVE-2015-2520)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-1093
Date Published:	8 Sep 2015
Severity:	High
Last Updated:	Tuesday 08 September, 2015
Source:	Microsoft MS15-099
Industry Reference:	CVE-2015-2520
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Microsoft Excel 2007 Service Pack 3 Microsoft Excel 2010 Service Pack 2 (32-bit editions) Microsoft Excel 2010 Service Pack 2 (64-bit editions) Microsoft Excel for Mac 2011 Microsoft Excel for Mac 2016 Microsoft Office Compatibility Pack Service Pack 3 Microsoft Excel Viewer
Vulnerability Description	A remote code execution vulnerability exists in Microsoft Office. The vulnerability is due to the way Microsoft Office does not properly handle objects in memory. A remote attacker can exploit this issue by enticing a target user to open a specially crafted file.
Update/Patch Avaliable	Apply patches from: MS15-099

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 Office Memory Corruption (MS15-099: CVE-2015-2520) 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 (MS15-099: CVE-2015-2520)