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  3. Microsoft DirectX DirectShow AVI Processing Buffer Overflow Vulnerability

Microsoft DirectX DirectShow AVI Processing Buffer Overflow Vulnerability

Risk

High

Date Discovered

October 11, 2005

Description

A buffer overflow vulnerability exists in the Microsoft Windows DirectX component. This issue is related to processing of .AVI (Audio Visual Interleave) media files. The specific vulnerability exists in DirectShow and could be exposed through applications that employ DirectShow to process .AVI files. Successful exploitation will permit execution of arbitrary code in the context of the user who opens a malicious .AVI file. This issue could be exploited through any means that will allow the attacker to deliver a malicious .AVI file to a victim user. In Web-based attack scenarios, exploitation could occur automatically if the malicious Web page can cause the .AVI file to be loaded automatically by Windows Media Player. Other attack vectors such as email or instant messaging may require the victim user to manually open the malicious .AVI. It is not known if third-party applications rely on DirectShow to process .AVI files. If so, these applications could also present an attack vector.

Technologies Affected

  • Avaya DefinityOne Media Servers
  • Avaya DefinityOne Media Servers R10
  • Avaya DefinityOne Media Servers R11
  • Avaya DefinityOne Media Servers R12
  • Avaya DefinityOne Media Servers R6
  • Avaya DefinityOne Media Servers R7
  • Avaya DefinityOne Media Servers R8
  • Avaya DefinityOne Media Servers R9
  • Avaya IP600 Media Servers
  • Avaya IP600 Media Servers R10
  • Avaya IP600 Media Servers R11
  • Avaya IP600 Media Servers R12
  • Avaya IP600 Media Servers R6
  • Avaya IP600 Media Servers R7
  • Avaya IP600 Media Servers R8
  • Avaya IP600 Media Servers R9
  • Avaya S3400 Message Application Server
  • Avaya S8100 Media Servers
  • Avaya S8100 Media Servers R10
  • Avaya S8100 Media Servers R11
  • Avaya S8100 Media Servers R12
  • Avaya S8100 Media Servers R6
  • Avaya S8100 Media Servers R7
  • Avaya S8100 Media Servers R8
  • Avaya S8100 Media Servers R9
  • Avaya Unified Communication Center
  • Microsoft DirectX 7.0
  • Microsoft DirectX 8.0
  • Microsoft DirectX 8.0 a
  • Microsoft DirectX 8.1
  • Microsoft DirectX 8.1 a
  • Microsoft DirectX 8.1 b
  • Microsoft DirectX 8.2
  • Microsoft DirectX 9.0
  • Microsoft DirectX 9.0 a
  • Microsoft DirectX 9.0 c
  • Microsoft DirectX 9.0b
  • Microsoft Small Business Server 2003
  • Microsoft Windows 2000 Advanced Server SP4
  • Microsoft Windows 2000 Datacenter Server SP4
  • Microsoft Windows 2000 Professional SP4
  • Microsoft Windows 2000 Server SP4
  • Microsoft Windows 98
  • Microsoft Windows 98SE
  • Microsoft Windows ME
  • Microsoft Windows Server 2003 Datacenter Edition
  • Microsoft Windows Server 2003 Datacenter Edition Itanium
  • Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
  • Microsoft Windows Server 2003 Datacenter Edition SP1
  • Microsoft Windows Server 2003 Datacenter x64 Edition
  • Microsoft Windows Server 2003 Enterprise Edition
  • Microsoft Windows Server 2003 Enterprise Edition Itanium
  • Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
  • Microsoft Windows Server 2003 Enterprise Edition SP1
  • Microsoft Windows Server 2003 Enterprise x64 Edition
  • Microsoft Windows Server 2003 Standard Edition
  • Microsoft Windows Server 2003 Standard Edition SP1
  • Microsoft Windows Server 2003 Standard x64 Edition
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows Server 2003 Web Edition SP1
  • Microsoft Windows XP Home SP1
  • Microsoft Windows XP Home SP2
  • Microsoft Windows XP Media Center Edition SP1
  • Microsoft Windows XP Media Center Edition SP2
  • Microsoft Windows XP Professional SP1
  • Microsoft Windows XP Professional SP2
  • Microsoft Windows XP Professional x64 Edition
  • Microsoft Windows XP Tablet PC Edition SP1
  • Microsoft Windows XP Tablet PC Edition SP2
  • Nortel Networks CallPilot 1.0.7
  • Nortel Networks CallPilot 2.0.0
  • Nortel Networks CallPilot 3.0.0
  • Nortel Networks CallPilot 4.0.0
  • Nortel Networks Centrex IP Client Manager 2.5.0
  • Nortel Networks Centrex IP Element Manager 2.5.0

Recommendations

Do not accept or execute files from untrusted or unknown sources.

Do not accept or open any files that originate from an untrusted source. Malicious .AVI files may be sent in email, hosted on a Web page, sent through instant messaging or other means.

Do not follow links provided by unknown or untrusted sources.

Do not visit Web sites of questionable integrity, especially if solicited to do so by an untrusted or unfamiliar source.

Implement multiple redundant layers of security.

Memory protection schemes such as non-executable stack/heap configurations and randomly mapped memory segments may complicate exploitation of memory corruption vulnerabilities.

Run all software as a nonprivileged user with minimal access rights.

All non-administrative activities should be performed as an unprivileged user with minimal access rights. This includes reading email, browsing the Web, or using instant messaging clients.
Microsoft has released updates to address this vulnerability. Fixes for Windows 98/98SE/ME are available through Windows Update. Avaya has released advisory ASA-2005-214 to state which Avaya products are affected by The October 2005 release of Microsoft Windows security updates. Please see the referenced advisory for further information. Nortel Networks has released a technical support bulletin (2005006318) regarding this and other issues for their Centrex IP Client Manager (CICM). They report the vulnerabilities will be fixed in the upcoming 2.5, 7.0 and 8.0 maintenance releases. Please see the referenced bulletin for further information. Nortel Networks has released a technical support bulletin (2005006315) regarding this issue for CallPilot. Users are advised to contact Nortel for further information. Microsoft has updated Microsoft Security Bulletin MS05-050 detailing possible problems with previous updates; new updates are also available. Please see the referenced advisory for further information.

Credits

Discovery is credited to Fang Xing of eEye Digital Security.
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.

Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Security Response, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

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