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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0416
         Cumulative Security Update of ActiveX Kill Bits (2508272)
                               13 April 2011

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows XP
                   Windows Server 2003
                   Windows Vista
                   Windows Server 2008
                   Windows 7
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-1243 CVE-2010-3973 CVE-2010-0811

Reference:         ESB-2010.1177
                   ESB-2010.0512

Original Bulletin: 
   http://www.microsoft.com/technet/security/Bulletin/MS11-027.mspx

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Microsoft Security Bulletin MS11-027 - Critical
Cumulative Security Update of ActiveX Kill Bits (2508272)
Version: 1.0
General Information
Executive Summary

This security update resolves two privately reported vulnerabilities and one 
publicly disclosed vulnerability in Microsoft software. The vulnerabilities 
could allow remote code execution if a user views a specially crafted Web page 
that instantiates a specific ActiveX control with 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 
update also includes kill bits for three third-party ActiveX controls.

This security update is rated Critical for all supported editions of Windows 
XP, Windows Vista, and Windows 7, and Moderate for all supported editions of
Windows Server 2003 (except Itanium-based editions), Windows Server2008 
(except Itanium-based editions), and Windows Server 2008 R2. For Itanium-based 
editions of Windows Server 2003 and Windows Server 2008, this security update 
has no severity rating. For more information, see the subsection, Affected and 
Non-Affected Software, in this section.

Affected Software 

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 Service Pack 1 and Windows Vista Service Pack 2
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 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems*
Windows Server 2008 R2 for x64-based Systems Service Pack 1*
Windows Server 2008 R2 for Itanium-based Systems
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1

**Server Core installation not affected. The vulnerabilities addressed by 
this update do not affect supported editions of Windows Server 2008 or 
Windows Server 2008 R2 as indicated, when installed using the Server Core 
installation option.

Vulnerability Information

Microsoft Internet Explorer 8 Developer Tools Vulnerability - CVE-2010-0811

A remote code execution vulnerability exists in the ActiveX control, Microsoft 
Internet Explorer 8 Developer Tools. 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.

Microsoft WMITools ActiveX Control Vulnerability - CVE-2010-3973

A remote code execution vulnerability exists in one of the Microsoft WMITools 
ActiveX controls. 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.

Microsoft Windows Messenger ActiveX Control Vulnerability - CVE-2011-1243

A remote code execution vulnerability exists in the Microsoft Windows 
Messenger ActiveX Control. 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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===========================================================================
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