iPolicy Networks Security Advisory
 

Microsoft Windows Media Header Parsing Invalid Free Remote Code Execution Vulnerability

Date Discovered: 09/08/2009
Severity: High
Applications Affected: MS Windows Media Format Runtime 9.0
MS Windows Media Format Runtime 9.5
MS Windows Media Format Runtime 11
MS Windows Media Services 9.1
MS Windows Media Services 2008
Operating Systems Affected: Microsoft Windows 2000 SP4
Microsoft Windows XP SP2 & SP3
Microsoft Windows XP Professional x64 SP2
Microsoft Windows Server 2003 SP2
Microsoft Windows Server 2003 x64 SP2
Microsoft Windows Vista
Microsoft Windows Vista SP1 & SP2
Microsoft Windows Vista x64 SP1 & SP2
Microsoft Windows Server 2008 32-bit 
Microsoft Windows Server 2008 32-bit SP2
Microsoft Windows Server 2008 64-bit 
Microsoft Windows Server 2008 64-bit SP2
Type: Remote
Identifiers: CVE-2009-2498
Synopsis
Microsoft Windows Media is prone to a remote code execution vulnerability which could be exploited to gain complete control of the affected system
Recommended Actions
Update the patches as guided by vendor at :
http://www.microsoft.com/technet/security/bulletin/MS09-047.mspx
Threat Analysis
A remote code execution vulnerability exists in Microsoft Windows Media Format Runtime component. The vulnerability exists due to improper handling of specially crafted ASF format files by windows component.

ASF is a compressed file format that stores audio and video information and is specially designed to run over the Interne. ASF files may have the file extensions ASF, WMV, or WMA. 

A remote attacker could exploit this vulnerability to take complete control of an affected system and install programs; view, change, or delete data; or create new accounts with full user rights.
References

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2498

Write-up by: Dheeraj Johri