Check Point Advisories

Microsoft Graphics Rendering Engine Thumbnail Image Stack Buffer Overflow (CVE-2010-3970)

Check Point Reference: CPAI-2011-003
Date Published: 9 Jan 2011
Severity: Critical
Last Updated: 6 Mar 2016
Industry Reference:CVE-2010-3970
Protection Provided by:

Security Gateway
R80, R77, R76, R75, R71, R70

Who is Vulnerable?
Vulnerability Description Thumbnails are reduced-size versions of pictures, used to help in recognizing and organizing them, serving the same role for images as a normal text index does for words.A stack buffer overflow vulnerability has been discovered in Microsoft's Graphics Rendering Engine.The vulnerability is due to insufficient input validation by the Microsoft Graphics Rendering Engine when processing the biClrUsed of a bitmap thumbnail. A remote attacker may exploit this issue by enticing a user to handle a specially crafted file containing a malformed thumbnail. The file could be embedded in Office documents or a .MIC file. This vulnerability may be triggered by previewing the malicious file in thumbnail view. Successful exploitation of this vulnerability could lead to arbitrary code execution.

Protection Overview

This protection will detect and block the transferring of files containing malformed thumbnails over HTTP and CIFS.

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 / R76 / R75 / R71 / R70

  1. In the IPS tab, click Protections and find the Microsoft Graphics Rendering Engine Thumbnail Image Stack Buffer Overflow protection using the Search tool and Edit the protection's settings.
  2. Install policy on all modules.

This protection's log will contain the following information:

Attack Name:  Content Protection Violation.
Attack Information:  Microsoft Graphics Rendering Engine thumbnail image stack buffer overflow

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