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

                       AL-2007.0129 -- AUSCERT ALERT
                                   [Win]
          MS07-068 - Critical Vulnerability in Windows Media File
                 Format Could Allow Remote Code Execution
                             12 December 2007

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

Product:              Windows Media Format Runtime 7.1, 9, 9.5 and 11
                      Windows Media Services 9.1
Publisher:            Microsoft
Operating System:     Windows Vista
                      Windows Server 2003
                      Windows XP SP2
                      Windows 2000 SP4
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-0064

Original Bulletin:
  http://www.microsoft.com/technet/security/Bulletin/MS07-068.mspx

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Microsoft Security Bulletin MS07-068
Critical Vulnerability in Windows Media File Format Could Allow
Remote Code Execution (941569 and 944275)

This critical security update resolves a privately reported vulnerability
in Windows Media File Format. This vulnerability could allow remote code
execution if a user viewed a specially crafted file in Windows Media Format
Runtime. 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 is a critical security update for supported editions of Windows Media
Format Runtime 7.1, 9, 9.5, 11 and for Windows Media Services 9.1.


Affected Software

    Windows Media Format Runtime 7.1	 	 	 	 
    Windows Media Format Runtime 9	 	 	 	 
    Windows Media Format Runtime 9.5	 	 	 	 
    Windows Media Format Runtime 9.5 x64 Edition	 	 	 	 
    Windows Media Format Runtime 11	 	 	 	 
    Windows Media Services 9.1

Non-Affected Software

    Windows Media Player 6.4 on Microsoft Windows 2000
    Windows Media Player 6.4 on Windows XP
    Windows Media Player 6.4 on Windows Server 2003
    Windows Media Services 4.1 on Microsoft Windows 2000
    Windows Media Services 4.1 on Microsoft Windows 2003
                                  for Itanium-Based Systems
    Windows Media Services 4.1 on Windows Server 2003 with SP1
                                  for Itanium-based Systems


Vulnerability Information

Windows Media Format Remote Code Execution Vulnerability Parsing ASF
CVE-2007-0064

A remote code execution vulnerability exists in Windows Media Format
Runtime due to the way it handles Advanced Systems Format (ASF) files. In
client applications, such as Windows Media Player, an attacker could
exploit the vulnerability by constructing specially crafted Windows Media
Format Runtime content that could potentially allow remote code execution
if a user visits a specially crafted Web site or opens an e-mail message
with specially crafted content. In server applications, such as Windows
Media Services, an attacker could exploit the vulnerability by
constructing specially crafted Windows Media Format Runtime content that
could potentially allow remote code execution if the server processes the
specially crafted content. In client and server applications, an attacker
who successfully exploited this vulnerability could take complete control
of an affected system.

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

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
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                which are GMT+10:00 (AEST).
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