Microsoft Security Bulletin MS12-081 - Critical

Vulnerability in Windows File Handling Component Could Allow Remote Code Execution (2758857)

Published: | Updated:

Version: 1.1

General Information

Executive Summary

This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if a user browses to a folder that contains a file or subfolder with a specially crafted name. An attacker who successfully exploited this vulnerability 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 all supported editions of Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. Windows 8, Windows Server 2012, and Window RT are not affected by the vulnerability. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by modifying the way that Windows handles files with specially crafted names. For more information about the vulnerability, 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. Microsoft Knowledge Base Article 2758857 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues.

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 SystemMaximum Security ImpactAggregate Severity RatingUpdates Replaced
Windows XP
Windows XP Service Pack 3
(KB2758857)
Remote Code ExecutionCriticalNone
Windows XP Professional x64 Edition Service Pack 2
(KB2758857)
Remote Code ExecutionCriticalKB935839 in MS07-035 replaced by KB2758857
Windows Server 2003
Windows Server 2003 Service Pack 2
(KB2758857)
Remote Code ExecutionCriticalKB935839 in MS07-035 replaced by KB2758857
Windows Server 2003 x64 Edition Service Pack 2
(KB2758857)
Remote Code ExecutionCriticalKB935839 in MS07-035 replaced by KB2758857
Windows Server 2003 with SP2 for Itanium-based Systems
(KB2758857)
Remote Code ExecutionCriticalKB935839 in MS07-035 replaced by KB2758857
Windows Vista
Windows Vista Service Pack 2
(KB2758857)
Remote Code ExecutionCriticalKB2533623 in Security Advisory 2269637 replaced by KB2758857
Windows Vista x64 Edition Service Pack 2
(KB2758857)
Remote Code ExecutionCriticalKB2533623 in Security Advisory 2269637 replaced by KB2758857
Windows Server 2008
Windows Server 2008 for 32-bit Systems Service Pack 2
(KB2758857)
Remote Code ExecutionCriticalKB2533623 in Security Advisory 2269637 replaced by KB2758857
Windows Server 2008 for x64-based Systems Service Pack 2
(KB2758857)
Remote Code ExecutionCriticalKB2533623 in Security Advisory 2269637 replaced by KB2758857
Windows Server 2008 for Itanium-based Systems Service Pack 2
(KB2758857)
Remote Code ExecutionCriticalKB2533623 in Security Advisory 2269637 replaced by KB2758857
Windows 7
Windows 7 for 32-bit Systems
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Windows 7 for 32-bit Systems Service Pack 1
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Windows 7 for x64-based Systems
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Windows 7 for x64-based Systems Service Pack 1
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Windows Server 2008 R2
Windows Server 2008 R2 for x64-based Systems
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Windows Server 2008 R2 for x64-based Systems Service Pack 1
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Windows Server 2008 R2 for Itanium-based Systems
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Server Core installation option
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
(KB2758857)
Remote Code ExecutionCriticalKB2533623 in Security Advisory 2269637 replaced by KB2758857
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
(KB2758857)
Remote Code ExecutionCriticalKB2533623 in Security Advisory 2269637 replaced by KB2758857
Windows Server 2008 R2 for x64-based Systems (Server Core installation)
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
(KB2758857)
Remote Code ExecutionCriticalKB2567680 in MS11-063 replaced by KB2758857

 

Non-Affected Software

Software
Operating System
Windows 8 for 32-bit Systems
Windows 8 for 64-bit Systems
Windows Server 2012
Windows RT
Server Core installation option
Windows Server 2012 (Server Core installation)

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

Windows Filename Parsing Vulnerability - CVE-2012-4774

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:

  • Lucas Apa of IOActive for reporting the Windows Filename Parsing Vulnerability (CVE-2012-4774)

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 (December 11, 2012): Bulletin published.
  • V1.1 (May 22, 2013): Added a link to Microsoft Knowledge Base Article 2758857 under Known Issues in the Executive Summary.