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                                   CERT-Renater

                        Note d'Information No. 2009/VULN281
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DATE                      : 15/07/2009

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Windows 2000, Windows XP, Windows Server 2003,
                            Windows Vista, Windows Server 2008
                            running Microsoft Video ActiveX Control.

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KB973346
http://www.microsoft.com/technet/security/bulletin/ms09-032.mspx
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Microsoft Security Bulletin MS09-032 - Critical

Cumulative Security Update of ActiveX Kill Bits (973346)

Published: July 14, 2009

Version: 1.0

General Information

Executive Summary

   This security update resolves a privately reported vulnerability that is
   currently being exploited. The vulnerability in Microsoft Video ActiveX
   Control could allow remote code execution if a user views a specially
   crafted Web page with Internet Explorer, instantiating the ActiveX
   control. This ActiveX control was never intended to be instantiated in
   Internet Explorer. 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
   Windows XP and Moderate for all supported editions of Windows Server
   2003. For more information, see the subsection, Affected and Non-Affected
   Software, in this section.

   The security update addresses the vulnerability by setting a kill bit so
   that the vulnerable control does not run in Internet Explorer. For more
   information about the vulnerability, see the Frequently Asked Questions
   (FAQ) subsection under the next section, Vulnerability Information.

   This security update also addresses the vulnerability first described in
   Microsoft Security Advisory 972890.

   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 information about specific configuration options in
   automatic updating, see Microsoft Knowledge Base Article 294871.

   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.

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 Server 2008 server core installation not affected. The
    vulnerability addressed by this update does not affect supported
    editions of Windows Server 2008 if Windows Server 2008 was installed
    using the Server Core installation option. For more information on this
    installation option, see Server Core. Note that the Server Core
    installation option does not apply to certain editions of Windows Server
    2008; see Compare Server Core Installation Options.

Vulnerability Information

   Microsoft Video ActiveX Control Vulnerability - CVE-2008-0015

   A remote code execution vulnerability exists in the Microsoft Video
   ActiveX Control, msvidctl.dll. An attacker could exploit the
   vulnerability by constructing a specially crafted Web page. When a user
   views the Web page, the vulnerability could allow remote code execution.
   An attacker who successfully exploited this vulnerability could gain the
   same user rights as the logged on user.
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