Check Point Advisories

Microsoft Graphics Filters CGM Image Converter Buffer Overrun (MS10-105) - Ver2 (CVE-2010-3945)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0725
Date Published:	18 May 2015
Severity:	High
Last Updated:	Monday 18 May, 2015
Source:
Industry Reference:	CVE-2010-3945
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Computer Graphics Metafile (CGM) is a free and open international standard file format for 2D vector graphics, raster graphics, and text. A remote code execution vulnerability has been discovered in the way that Microsoft Office allocates buffer size when handling CGM image files. The vulnerability is due to an error in Microsoft Office CGM Image Converter that fails to properly allocate buffer sizes in memory. A remote attacker may trigger this issue by convincing a user to open an Office document containing a specially crafted CGM image file. By persuading a user to open the malformed file, an attacker could take complete control of an affected system.

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 Graphics Filters CGM Image Converter Buffer Overrun (MS10-105) - Ver2 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 Graphics Filters CGM Image Converter Buffer Overrun (MS10-105) - Ver2