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Microsoft Windows DirectShow AVI Handling Vulnerability
Secunia Advisory: SA17160
Release Date: 2005-10-11
Last Update: 2006-02-10
Popularity: 17,500 views

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

OS:Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Embedded
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional

Software:Microsoft DirectX 7.x
Microsoft DirectX 8.x
Microsoft DirectX 9.x

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CVE reference:CVE-2005-2128


Description:
eEye Digital Security has been reported a vulnerability in Microsoft Windows DirectShow, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a validation error in QUARTZ.DLL when decoding AVI movie files. This can be exploited to write a null byte to an arbitrary memory location e.g. the header of the heap block.

Successful exploitation allows arbitrary code execution, but requires that the user open a malicious AVI file with specially crafted value in the length field of the "strn" element.

Solution:
Apply patches.

Microsoft DirectX 7.0 on Microsoft Windows 2000 (requires Service Pack 4):
http://www.microsoft.com/downloads/de...=2feffe6c-6c1c-42d9-b15e-f8f8d9c0e60e

Microsoft DirectX 8.1 on Microsoft Windows XP (requires Service Pack 1 or 2):
http://www.microsoft.com/downloads/de...=2636cfce-49ea-4d06-80ba-21a84f3658a5

Microsoft DirectX 8.1 on Microsoft Windows XP Professional x64 Edition:
http://www.microsoft.com/downloads/de...=ef614cdc-1db5-4b5c-8440-714941799a9f

Microsoft DirectX 8.1 on Microsoft Windows Server 2003 (with and without Service Pack 1):
http://www.microsoft.com/downloads/de...=66f44766-3741-4c83-aa5f-1b3498131dd9

Microsoft DirectX 8.1 on Microsoft Windows Server 2003 (Itanium) (with and without Service Pack 1):
http://www.microsoft.com/downloads/de...=7f8342a0-2462-46d3-9e40-262f72db68a6

Microsoft DirectX 8.1 on Microsoft Windows Server 2003 x64 Edition:
http://www.microsoft.com/downloads/de...=76c3815c-a966-49eb-825f-1b8454c09bbf

Microsoft DirectX 8.0, 8.0a, 8.1, 8.1a, 8.1b, and 8.2 on Windows 2000 (requires Service Pack 4):
http://www.microsoft.com/downloads/de...=FEDC7212-27B8-4993-9965-53E9298DB386

Microsoft DirectX 9.0, 9.0a, 9.0b, and 9.0c on Windows 2000 (requires Service Pack 4):
http://www.microsoft.com/downloads/de...=1853AD1F-92C8-4C2B-8F52-9B2FC8DBF769

Microsoft DirectX 9.0, 9.0a, 9.0b, and 9.0c on Windows XP (requires Service Pack 1):
http://www.microsoft.com/downloads/de...=36FBED29-E264-4BC7-AB48-2CC4A59ACAA1

Microsoft DirectX 9.0, 9.0a, 9.0b, and 9.0c on Windows Server 2003:
http://www.microsoft.com/downloads/de...=6083BA2D-4F1A-4900-8F7D-A32CB41CB5FA

Microsoft Windows XP Embedded (with SP2):
http://www.microsoft.com/downloads/de...=e7b6d199-7607-44a8-96fd-5a2386427bd9

Microsoft Windows XP Embedded (with SP1):
http://www.microsoft.com/downloads/de...=af116ff1-9347-40d5-b03c-c2c758c652ba

Provided and/or discovered by:
Fang Xing, eEye Digital Security.

Changelog:
2005-10-12: Added information from eEye Digital Security. Updated "Description", "Original Advisory", "Other References", and credit sections.
2005-11-21: Added patch information for Windows XP Embedded.
2006-02-10: Added patch information for Windows XP Embedded with SP1.

Original Advisory:
MS05-050 (KB904706):
http://www.microsoft.com/technet/security/Bulletin/MS05-050.mspx

eEye Digital Security:
http://www.eeye.com/html/research/advisories/AD20051011a.html

Other References:
US-CERT VU#995220
http://www.kb.cert.org/vuls/id/995220


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