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A  U  S  C  E  R  T                                           A  L  E  R  T

                       AL-2008.0094 -- AUSCERT ALERT
                                   [Win]
         MS08-053 - Vulnerability in Windows Media Encoder 9 Could
                        Allow Remote Code Execution
                             10 September 2008

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        AusCERT Alert Summary
        ---------------------

Product:              Windows Media Encoder 9 Series
Publisher:            Microsoft
Operating System:     Windows 2000
                      Windows XP
                      Windows Vista
                      Windows Server 2003
                      Windows Server 2008
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2008-3008

Original Bulletin:    
  http://www.microsoft.com/technet/security/bulletin/ms08-053.mspx

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Microsoft Security Bulletin MS08-053 Critical

Vulnerability in Windows Media Encoder 9 Could Allow Remote Code Execution 
(954156)

  Published: September 9, 2008

  Version: 1.0

General Information

Executive Summary

  This security update resolves a privately reported vulnerability in 
  Windows Media Encoder 9 Series. The vulnerability could allow remote code 
  execution if a user viewed a specially crafted Web page. 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.

  This security update is rated Critical for all supported and affected 
  editions of Microsoft Windows 2000, Windows XP, and Windows Vista, and 
  Moderate for supported and affected versions of Windows Server 2003 and 
  Windows Server 2008. 

  The security update addresses the vulnerability by performing additional 
  parameter validation and modifying the way that controls in Windows Media 
  Encoder interact with Internet Explorer.

  Recommendation. Microsoft recommends that customers apply the update 
  immediately.

Affected Software

  Microsoft Windows 2000 Service Pack 4
  Windows XP Service Pack 2 and Windows XP Service Pack 3
  Windows XP Professional x64 Edition and Windows XP Professional x64 
    Edition Service Pack 2
  Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2
  Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition 
    Service Pack 2
  Windows Vista and Windows Vista Service Pack 1
  Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1
  Windows Server 2008 for 32-bit Systems*
  Windows Server 2008 for x64-based Systems*
  *Windows Server 2008 server core installation not affected.  

Vulnerability Information

Windows Media Encoder Buffer Overrun Vulnerability - CVE-2008-3008

  A remote code execution vulnerability exists in the WMEX.DLL ActiveX 
  control installed by Windows Media Encoder 9 Series. The vulnerability 
  could allow remote code execution if a user views a specially crafted 
  Web page. 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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        http://www.auscert.org.au/render.html?it=3192

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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