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Microsoft Security Bulletin MS11-025 - Important

Vulnerability in Microsoft Foundation Class (MFC) Library Could Allow Remote Code Execution (2500212)

Published: | Updated:

Version: 4.3

General Information

Executive Summary

This security update resolves a publicly disclosed vulnerability in certain applications built using the Microsoft Foundation Class (MFC) Library. The vulnerability could allow remote code execution if a user opens a legitimate file associated with such an affected application, and the file is located in the same network folder as a specially crafted library file. For an attack to be successful, a user must visit an untrusted remote file system location or WebDAV share and open a document from this location that is then loaded by the affected application.

This security update is rated Important for all supported editions of Microsoft Visual Studio and Microsoft Visual C++ Redistributable Package. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by correcting the manner in which applications built using MFC load external libraries. 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. 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 at the earliest opportunity 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 2500212 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, visit Microsoft Support Lifecycle.

Affected Software

Operating SystemMaximum Security ImpactAggregate Severity RatingBulletins Replaced by this Update
Microsoft Visual Studio .NET 2003 Service Pack 1
(KB2465373)
Remote Code ExecutionImportantMS09-035
Microsoft Visual Studio 2005 Service Pack 1
(KB2538218)
Remote Code ExecutionImportantMS09-035
Microsoft Visual Studio 2008 Service Pack 1
(KB2538241)
Remote Code ExecutionImportantMS09-035
Microsoft Visual Studio 2010
(KB2542054)
Remote Code ExecutionImportantNone
Microsoft Visual Studio 2010 Service Pack 1
(KB2565057)
Remote Code ExecutionImportantNone
Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package
(KB2538242)
Remote Code ExecutionImportantMS09-035
Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package
(KB2538243)
Remote Code ExecutionImportantMS09-035
Microsoft Visual C++ 2010 Redistributable Package
(KB2467173)
Remote Code ExecutionImportantNone
Microsoft Visual C++ 2010 Redistributable Package Service Pack 1
(KB2565063)
Remote Code ExecutionImportantNone

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

MFC Insecure Library Loading Vulnerability - CVE-2010-3190

Update Information

Detection and Deployment Tools and Guidance

Security Update Deployment

Other Information

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 visit the active protections Web sites provided by program partners, listed in Microsoft Active Protections Program (MAPP) Partners.

Support

  • Customers in the U.S. and Canada can receive technical support from Security Support or 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates. For more information about available support options, see Microsoft Help and Support.
  • International customers can receive support from their local Microsoft subsidiaries. There is no charge for support that is associated with security updates. For more information about how to contact Microsoft for support issues, visit the International Support Web site.

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 (April 12, 2011): Bulletin published.
  • V1.1 (April 12, 2011): Clarified the update FAQ, "I am a third-party application developer and I use Visual C++. How do I update my application?"
  • V2.0 (April 21, 2011): Rereleased bulletin to reoffer the updates to address a detection issue. There were no changes to the security update files in this bulletin. Customers who have already successfully updated their systems do not need to reinstall this update.
  • V2.1 (April 27, 2011): Corrected the bulletin replacement information and clarified the update FAQ entry, "Will I be offered this update even if I have no suitable attack vectors on my system?"
  • V3.0 (June 14, 2011): Reoffered the update for Microsoft Visual Studio 2005 Service Pack 1, Microsoft Visual Studio 2008 Service Pack 1, Microsoft Visual Studio 2010, Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package, and Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package. Customers who have previously installed this update should install the new packages on the affected systems.
  • V4.0 (August 9, 2011): Added Microsoft Visual Studio 2010 Service Pack 1 (KB2565057) and Microsoft Visual C++ 2010 Redistributable Package Service Pack 1 (KB2565063) as Affected Software. See the update FAQ for details. Also corrected the file verification information for Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package, Microsoft Visual C++ 2008 Service Pack 1 Redistributable Package, and Microsoft Visual C++ 2010 Redistributable Package.
  • V4.1 (November 23, 2011): Corrected the installation switches and switch tables for Microsoft Visual C++ 2010 Redistributable Package and Microsoft Visual C++ 2010 Redistributable Package Service Pack 1. This is an informational change only.
  • V4.2 (January 24, 2012): Added an entry to the update FAQ to announce a detection change for KB2538242, KB2538243, KB2467173, KB2538218, KB2538241, and KB2542054 to correct an installation issue. This is a detection change only. There were no changes to the security update files. Customers who have already successfully updated their systems do not need to take any action.
  • V4.3 (March 13, 2012): Added an entry to the update FAQ to announce a detection change for KB2565063 and KB2565057 to correct an installation issue. This is a detection change only. There were no changes to the security update files. Customers who have already successfully updated their systems do not need to take any action.