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                                   CERT-Renater

                        Note d'Information No. 2010/VULN057
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DATE                      : 10/02/2010

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Windows 2000, Windows XP, Windows Vista
                             Windows 7, Windows Server 2003, Windows Server 2008
                             running Microsoft DirectShow.

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KB977935
http://www.microsoft.com/technet/security/bulletin/MS10-013.mspx
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Microsoft Security Bulletin MS10-013 - Critical

Vulnerability in Microsoft DirectShow Could Allow Remote Code Execution
(977935)

Published: February 09, 2010

Version: 1.0

General Information

Executive Summary

  This security update resolves a privately reported vulnerability in
  Microsoft DirectShow. The vulnerability could allow remote code execution
  if a user opened a specially crafted AVI file. An attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or delete
  data; or create new accounts with full user rights. Users whose accounts
  are configured to have fewer user rights on the system could be less
  impacted than users who operate with administrative user rights.

  This security update is rated Critical for all supported editions of
  Microsoft Windows except for all supported Itanium-based editions of
  Windows Server 2003, Windows Server 2008, and Windows Server 2008 R2,
  for which this security update is rated Important.

  The security update addresses the vulnerability by correcting the way that
  DirectShow opens AVI files.

  Recommendation. The majority of customers have automatic updating enabled
  and will not need to take any action because this security update will be
  downloaded and installed automatically. Customers who have not enabled
  automatic updating need to check for updates and install this update
  manually.

  For administrators and enterprise installations, or end users who want to
  install this security update manually, Microsoft recommends that customers
  apply the update immediately using update management software, or by
  checking for updates using the Microsoft Update service.

Known Issues. None

Affected Software

  Microsoft Windows 2000 Service Pack 4
  Windows XP Service Pack 2 and Windows XP Service Pack 3
  Windows XP Professional x64 Edition Service Pack 2
  Windows Server 2003 Service Pack 2
  Windows Server 2003 x64 Edition Service Pack 2
  Windows Server 2003 with SP2 for Itanium-based Systems
  Windows Vista, Windows Vista Service Pack 1 and Windows Vista Service
    Pack 2
  Windows Vista x64 Edition, Windows Vista x64 Edition Service Pack 1, and
    Windows Vista x64 Edition Service Pack 2
  Windows Server 2008 for 32-bit Systems and Windows Server 2008 for 32-bit
    Systems Service Pack 2
  Windows Server 2008 for x64-based Systems and Windows Server 2008 for
    x64-based Systems Service Pack 2
  Windows Server 2008 for Itanium-based Systems and Windows Server 2008 for
    Itanium-based Systems Service Pack 2
  Windows 7 for 32-bit Systems
  Windows 7 for x64-based Systems
  Windows Server 2008 R2 for x64-based Systems
  Windows Server 2008 R2 for Itanium-based Systems

Vulnerability Information
	
DirectShow Heap Overflow Vulnerability - CVE-2010-0250

  A remote code execution vulnerability exists in the way that Microsoft
  DirectShow parses AVI media files. This vulnerability could allow remote
  code execution if a user opened a specially crafted AVI file. If a user
  is logged on with administrative user rights, an attacker who successfully
  exploited this vulnerability could take complete control of an affected
  system. An attacker could then install programs; view, change, or delete
  data; or create new accounts with full user rights. Users whose accounts
  are configured to have fewer user rights on the system could be less
  impacted than users who operate with administrative user rights.


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