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Microsoft Security Bulletin MS12-057 - Important
Vulnerability in Microsoft Office Could Allow Remote Code Execution (2731879)

Published: Tuesday, August 14, 2012

Version: 1.0
General Information
Executive Summary

This security update resolves one privately reported vulnerability in Microsoft Office. The vulnerability could allow remote code execution if a user opens a specially crafted file or embeds a specially crafted Computer Graphics Metafile (CGM) graphics file into an Office file. 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 Important for all supported editions of Microsoft Office 2007 and Microsoft Office 2010. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerability by disabling the loading of CGM graphics files in Microsoft Office applications. 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. Customers can configure automatic updating to check online for updates from Microsoft Update by using the Microsoft Update service. Customers who have automatic updating enabled and configured to check online for updates from Microsoft Update typically 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 from Microsoft Update and install this update manually. For information about specific configuration options in automatic updating in supported editions of Windows XP and Windows Server 2003, see Microsoft Knowledge Base Article 294871. For information about automatic updating in supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2, see Understanding Windows automatic updating.

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 2731879 documents the currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues. When currently known issues and recommended solutions pertain only to specific releases of this software, this article provides links to further articles.
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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
Office Suite and Other Software	Maximum Security Impact	Aggregate Severity Rating	Updates Replaced
Microsoft Office 2007 Service Pack 2
(KB2596615)

Microsoft Office 2007 Service Pack 2
(KB2596754)	Remote Code Execution	Important	KB2584063 in MS11-073 replaced by KB2596615

KB2288931 in MS10-105 replaced by KB2596754
Microsoft Office 2007 Service Pack 3
(KB2596615)

Microsoft Office 2007 Service Pack 3
(KB2596754)	Remote Code Execution	Important	None
Microsoft Office 2010 Service Pack 1 (32-bit editions)
(KB2553260)

Microsoft Office 2010 Service Pack 1 (32-bit editions)
(KB2589322)	Remote Code Execution	Important	KB2584066 in MS11-073 replaced by KB2553260
Microsoft Office 2010 Service Pack 1 (64-bit editions)
(KB2553260)

Microsoft Office 2010 Service Pack 1 (64-bit editions)
(KB2589322)	Remote Code Execution	Important	KB2584066 in MS11-073 replaced by KB2553260

Non-Affected Software 
Office and Other Software
Microsoft Office 2003 Service Pack 3
Microsoft Office 2008 for Mac
Microsoft Office for Mac 2011
Microsoft Office Compatibility Pack Service Pack 2 and Microsoft Office Compatibility Pack Service Pack 3
Microsoft Word Viewer
Microsoft Excel Viewer 2007 Service Pack 2 and Microsoft Excel Viewer 2007 Service Pack 3
Microsoft PowerPoint Viewer 2007 Service Pack 2 and Microsoft PowerPoint Viewer 2007 Service Pack 3
Microsoft PowerPoint Viewer 2010 Service Pack 1
Microsoft Visio Viewer 2010 Service Pack 1 (32-bit Edition)
Microsoft Works 9
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Frequently Asked Questions (FAQ) Related to This Security Update
Vulnerability Information
Severity Ratings and Vulnerability Identifiers
CGM File Format Memory Corruption Vulnerability - CVE-2012-2524
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:

    Andrei Costin for reporting the CGM File Format Memory Corruption Vulnerability (CVE-2012-2524)

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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.
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Support

How to obtain help and support for this security update

    Help installing updates: Support for Microsoft Update
    Security solutions for IT professionals: TechNet Security Troubleshooting and Support
    Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center
    Local support according to your country: International Support

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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.
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Revisions

    V1.0 (August 14, 2012): Bulletin published.