Microsoft MJPEG Decoder Remote Code Execution Vulnerability

Overview

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iPolicy Networks Security Advisory


Date Discovered:	06/10/2008
Severity:	High
Operating Systems Affected:	Microsoft Windows 2000 SP4 Microsoft Windows XP SP2 Microsoft Windows XP SP3 Microsoft Windows XP Professional x64 Microsoft Windows XP Professional x64 SP2 Microsoft Windows Server 2003 SP1 Microsoft Windows Server 2003 SP2 Microsoft Windows Server 2003 x64 Microsoft Windows Server 2003 x64 SP2 Microsoft Windows Vista Microsoft Windows Vista Service Pack 1 Microsoft Windows Vista x64 Microsoft Windows Vista x64 SP1
Applications Affected:	DirectX 7.0 DirectX 8.1 DirectX 9.0 DirectX 10.0

Synopsis

A remote code execution vulnerability exists in the way that the Windows MJPEG Codec handles MJPEG streams in AVI or ASF files. A user would have to preview or play a specially crafted MJPEG file for the vulnerability to be exploited.

Recommended Actions

Update the patches as guided by vendor at :
http://www.microsoft.com/technet/security/bulletin/ms08-033.mspx

Threat Analysis

An MJPEG file is a media file where a number of JPEG images are connected together to create a video stream. The MJPEG video stream can then be inserted into an AVI or other common video formatted file.

The vulnerability is caused by the way Windows performs error checking on MJPEG video streams embedded in ASF or AVI media files. Exploitation of the vulnerability would require a user to open and view a media file with a specially crafted MJPEG file embedded in it.

An attacker who successfully exploited this vulnerability could take complete control of an affected system remotely. An attacker could then install programs, view, change, delete data or create new accounts with full user rights.

References

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0011

Write-up by: Aditya Chaturvedi

Security Sites

“iPolicy is one of the most visionary firewall vendors in the firewall Magic Quadrant. Its architecture of a central session processing engine and multiple content blades that are able to block based on signatures, rules and so on is the closest to the network security ideal.”

Greg Young, John Pescatore
Magic Quadrant for Network Firewalls, 2H04, Gartner

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