Check Point Advisories

Microsoft Windows GDI WMF File HeaderSize Buffer Overflow (MS08-071; CVE-2008-2249)

Vulnerability
Protection

Check Point Reference:	CPAI-2008-168
Date Published:	9 Dec 2008
Severity:	Critical
Last Updated:	Sunday 11 January, 2015
Source:
Industry Reference:	CVE-2008-2249
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	The Microsoft Windows graphics device interface (GDI) enables applications to use graphics and formatted text on the video display and on the printer. A remote code execution vulnerability has been discovered in the way GDI handles integer calculations. The vulnerability is due to a buffer overflow when GDI fails to properly process malformed headers in malformed WMF image files. A remote attacker may trigger this issue by convincing a user to open a specially crafted WMF image file. By persuading a user to open the malformed WMF file, an attacker could take complete control of an affected system.

Protection Overview

This protection will detect and block the transferring of malformed WMF files over HTTP.

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 / R71 / R70 / R65

In the IPS tab, click Protections and find the Microsoft Windows GDI WMF File HeaderSize Buffer Overflow (MS08-071) 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 Windows GDI WMF file HeaderSize buffer overflow (MS08-071)