Check Point Advisories

Microsoft Office Memory Corruption (MS15-99: CVE-2015-2521)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-1099
Date Published:	8 Sep 2015
Severity:	High
Last Updated:	Tuesday 08 September, 2015
Source:	Microsoft MS15-099
Industry Reference:	CVE-2015-2521
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)
Vulnerability Description	A remote code execution vulnerability exists in Microsoft Excel. The vulnerability is due to an error in the way Microsoft Excel improperly handles objects in memory while parsing specially crafted files. A remote attacker can exploit this issue by enticing a victim 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 (MS15-99: CVE-2015-2521) 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 (MS15-99: CVE-2015-2521)