Microsoft Security Bulletin MS12-071 - Critical

Cumulative Security Update for Internet Explorer (2761451)

Published:

Version: 1.0

General Information

Executive Summary

This security update resolves three privately reported vulnerabilities in Internet Explorer. The vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. 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 Internet Explorer 9 on Windows clients and Moderate for Internet Explorer 9 on Windows servers. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerabilities by modifying the way that Internet Explorer handles objects in memory. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.

Recommendation. Most 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.

See also the section, Detection and Deployment Tools and Guidance, later in this bulletin.

Known Issues. None

Affected and Non-Affected Software

The following software have been tested to determine which versions or editions are affected. Other versions or editions are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see Microsoft Support Lifecycle.

Affected Software 

Operating SystemComponentMaximum Security ImpactAggregate Severity RatingUpdates Replaced
Internet Explorer 9
Windows Vista Service Pack 2Internet Explorer 9 
(KB2761451)
Remote Code ExecutionCriticalKB2744842 in MS12-063 replaced by KB2761451
Windows Vista x64 Edition Service Pack 2Internet Explorer 9 
(KB2761451)
Remote Code ExecutionCriticalKB2744842 in MS12-063 replaced by KB2761451
Windows Server 2008 for 32-bit Systems Service Pack 2Internet Explorer 9 
(KB2761451)
Remote Code ExecutionModerateKB2744842 in MS12-063 replaced by KB2761451
Windows Server 2008 for x64-based Systems Service Pack 2Internet Explorer 9 
(KB2761451)
Remote Code ExecutionModerateKB2744842 in MS12-063 replaced by KB2761451
Windows 7 for 32-bit Systems Internet Explorer 9 
(KB2761451)
Remote Code ExecutionCriticalKB2744842 in MS12-063 replaced by KB2761451
Windows 7 for 32-bit Systems Service Pack 1Internet Explorer 9 
(KB2761451)
Remote Code ExecutionCriticalKB2744842 in MS12-063 replaced by KB2761451
Windows 7 for x64-based Systems Internet Explorer 9 
(KB2761451)
Remote Code ExecutionCriticalKB2744842 in MS12-063 replaced by KB2761451
Windows 7 for x64-based Systems Service Pack 1Internet Explorer 9 
(KB2761451)
Remote Code ExecutionCriticalKB2744842 in MS12-063 replaced by KB2761451
Windows Server 2008 R2 for x64-based Systems Internet Explorer 9 
(KB2761451)
Remote Code ExecutionModerateKB2744842 in MS12-063 replaced by KB2761451
Windows Server 2008 R2 for x64-based Systems Service Pack 1Internet Explorer 9 
(KB2761451)
Remote Code ExecutionModerateKB2744842 in MS12-063 replaced by KB2761451

 

Non-Affected Software

Operating SystemComponent
Internet Explorer 6
Windows XP Service Pack 3Internet Explorer 6
Windows XP Professional x64 Edition Service Pack 2Internet Explorer 6
Windows Server 2003 Service Pack 2Internet Explorer 6
Windows Server 2003 x64 Edition Service Pack 2Internet Explorer 6
Windows Server 2003 with SP2 for Itanium-based SystemsInternet Explorer 6
Internet Explorer 7
Windows XP Service Pack 3Internet Explorer 7
Windows XP Professional x64 Edition Service Pack 2Internet Explorer 7
Windows Server 2003 Service Pack 2Internet Explorer 7
Windows Server 2003 x64 Edition Service Pack 2Internet Explorer 7
Windows Server 2003 with SP2 for Itanium-based SystemsInternet Explorer 7
Windows Vista Service Pack 2Internet Explorer 7
Windows Vista x64 Edition Service Pack 2Internet Explorer 7
Windows Server 2008 for 32-bit Systems Service Pack 2Internet Explorer 7
Windows Server 2008 for x64-based Systems Service Pack 2Internet Explorer 7
Windows Server 2008 for Itanium-based Systems Service Pack 2Internet Explorer 7
Internet Explorer 8
Windows XP Service Pack 3Internet Explorer 8
Windows XP Professional x64 Edition Service Pack 2Internet Explorer 8
Windows Server 2003 Service Pack 2Internet Explorer 8
Windows Server 2003 x64 Edition Service Pack 2Internet Explorer 8
Windows Vista Service Pack 2Internet Explorer 8
Windows Vista x64 Edition Service Pack 2Internet Explorer 8
Windows Server 2008 for 32-bit Systems Service Pack 2Internet Explorer 8
Windows Server 2008 for x64-based Systems Service Pack 2Internet Explorer 8
Windows 7 for 32-bit Systems Internet Explorer 8
Windows 7 for 32-bit Systems Service Pack 1Internet Explorer 8
Windows 7 for x64-based Systems Internet Explorer 8
Windows 7 for x64-based Systems Service Pack 1Internet Explorer 8
Windows Server 2008 R2 for x64-based Systems Internet Explorer 8
Windows Server 2008 R2 for x64-based Systems Service Pack 1Internet Explorer 8
Windows Server 2008 R2 for Itanium-based Systems Internet Explorer 8
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1Internet Explorer 8
Internet Explorer 10
Windows 8 for 32-bit Systems Internet Explorer 10
Windows 8 for 64-bit Systems Internet Explorer 10
Windows Server 2012 Internet Explorer 10
Windows RT Internet Explorer 10
Server Core installation
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)Not applicable
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)Not applicable
Windows Server 2008 R2 for x64-based Systems (Server Core installation)Not applicable
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Not applicable
Windows Server 2012 (Server Core installation)Not applicable

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

CFormElement Use After Free Vulnerability - CVE-2012-1538

CTreePos Use After Free Vulnerability - CVE-2012-1539

CTreeNode Use After Free Vulnerability - CVE-2012-4775

Update Information

Detection and Deployment Tools and Guidance

Security Update Deployment

Other Information

Acknowledgments

Microsoft thanks the following for working with us to help protect customers:

  • Jose A. Vazquez of spa-s3c.blogspot.com, working with VeriSign iDefense Labs, for reporting the CFormElement Use After Free Vulnerability (CVE-2012-1538)
  • Omair for reporting the CFormElement Use After Free Vulnerability (CVE-2012-1538)
  • Jose A. Vazquez of spa-s3c.blogspot.com, working with VeriSign iDefense Labs, for reporting the CTreePos Use After Free Vulnerability (CVE-2012-1539)
  • Cheng-da Tsai (Orange), Sung-ting Tsai, and Ming-chieh Pan (Nanika) of Trend Micro for reporting the CTreeNode Use After Free Vulnerability (CVE-2012-4775)

Microsoft Active Protections Program (MAPP)

To improve security protections for customers, Microsoft provides vulnerability information to major security software providers in advance of each monthly security update release. Security software providers can then use this vulnerability information to provide updated protections to customers via their security software or devices, such as antivirus, network-based intrusion detection systems, or host-based intrusion prevention systems. To determine whether active protections are available from security software providers, please go to the active protections websites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

Support

How to obtain help and support for this security update

Disclaimer

The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Revisions

  • V1.0 (November 13, 2012): Bulletin published.