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

                       AL-2007.0128 -- AUSCERT ALERT
                                   [Win]
  MS07-064 - Vulnerabilities in DirectX Could Allow Remote Code Execution
                             12 December 2007

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

Product:              DirectX 7.0 to 10.0
Publisher:            Microsoft
Operating System:     Windows Vista
                      Windows XP SP2
                      Windows 2000 SP4
Impact:               Execute Arbitrary Code/Commands
Access:               Remote/Unauthenticated
CVE Names:            CVE-2007-3901 CVE-2007-3895

Original Bulletin:
  http://www.microsoft.com/technet/security/bulletin/MS07-064.mspx

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Microsoft Security Bulletin MS07-064
Critical Vulnerabilities in DirectX Could Allow Remote Code Execution (941568)

This critical security update resolves two privately reported vulnerabilities 
in Microsoft DirectX. These vulnerabilities could allow code execution if a
user opened a specially crafted file used for streaming media in DirectX. 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.


Affected Software 

   DirectX 7.0
   DirectX 8.1
   DirectX 9.0c
   DirectX 10.0


Vulnerability Information

Microsoft DirectX Code Execution Vulnerability Parsing SAMI Files
CVE-2007-3901

A remote code execution vulnerability exists in the way DirectX handles
supported format files. This vulnerability could allow code execution if a
user opened a specially crafted 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.
	
Microsoft DirectX Code Execution Vulnerability Parsing WAV and AVI Files
CVE-2007-3895

A remote code execution vulnerability exists in the way DirectX handles WAV
and AVI format files. This vulnerability could allow code execution if a
user visits a specially crafted Web site or opens an e-mail message with
specially crafted content. 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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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)
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                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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