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Microsoft Security Bulletin MS11-036 - Important

Vulnerabilities in Microsoft PowerPoint Could Allow Remote Code Execution (2545814)

Published: | Updated:

Version: 1.2

General Information

Executive Summary

This security update resolves two privately reported vulnerabilities in Microsoft PowerPoint. The vulnerabilities could allow remote code execution if a user opens a specially crafted PowerPoint file. An attacker who successfully exploited either of these vulnerabilities could gain the same user rights as the logged-on 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. Installing and configuring Office File Validation (OFV) to prevent the opening of suspicious files blocks the attack vectors for exploiting the vulnerabilities described in CVE-2011-1269 and CVE-2011-1270. See the section, Frequently Asked Questions (FAQ) Related to This Security Update, for more information about how the Office File Validation feature can be configured to block the attack vectors.

This security update is rated Important for all supported editions of Microsoft PowerPoint 2002, Microsoft PowerPoint 2003, Microsoft PowerPoint 2007, Microsoft Office 2004 for Mac, and Microsoft Office 2008 for Mac. The security update is also rated Important for all supported versions of Open XML File Format Converter for Mac and Microsoft Office Compatibility Pack. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The update addresses the vulnerabilities by correcting the way that PowerPoint handles memory when parsing specially crafted PowerPoint files. 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 2545814 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.

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

Microsoft Office Suites and Other SoftwareComponentMaximum Security ImpactAggregate Severity RatingBulletins Replaced by this Update
Microsoft Office Suites and Components
Microsoft Office XP Service Pack 3Microsoft PowerPoint 2002 Service Pack 3
(KB2535802)
Remote Code ExecutionImportantMS11-022
Microsoft Office 2003 Service Pack 3Microsoft PowerPoint 2003 Service Pack 3
(KB2535812)
Remote Code ExecutionImportantMS11-022
Microsoft Office 2007 Service Pack 2Microsoft PowerPoint 2007 Service Pack 2
(KB2535818)
Remote Code ExecutionImportantMS11-022
Microsoft Office for Mac
Microsoft Office 2004 for Mac[1]Not applicableRemote Code ExecutionImportantNone
Microsoft Office 2008 for Mac[1]Not applicableRemote Code ExecutionImportantNone
Open XML File Format Converter for Mac[1]Not applicableRemote Code ExecutionImportantNone
Other Office Software
Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats Service Pack 2
(KB2540162)
Not applicableRemote Code ExecutionImportantMS11-022

[1]The security updates for Microsoft Office 2004 for Mac (KB2555786), Microsoft Office 2008 for Mac (KB2555785), and Open XML File Format Converter for Mac (KB2555787) are available as of June 14, 2011. See the entries in the section, Frequently Asked Questions (FAQ) Related to This Security Update, that explain how to obtain these updates.

Non-Affected Software

Office and Other Software
Microsoft PowerPoint 2010 (32-bit editions)
Microsoft PowerPoint 2010 (64-bit editions)
Microsoft Office for Mac 2011
Microsoft PowerPoint Viewer 2007 Service Pack 2
Microsoft PowerPoint Viewer
Microsoft Works 9

Frequently Asked Questions (FAQ) Related to This Security Update

Vulnerability Information

Severity Ratings and Vulnerability Identifiers

Presentation Memory Corruption RCE Vulnerability - CVE-2011-1269

Presentation Buffer Overrun RCE Vulnerability - CVE-2011-1270

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:

  • Will Dormann of CERT/CC for working with us on the Presentation Memory Corruption RCE Vulnerability (CVE-2011-1269)
  • Will Dormann of CERT/CC for working with us on the Presentation Buffer Overrun RCE Vulnerability (CVE-2011-1270)

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 (May 10, 2011): Bulletin published.
  • V1.1 (May 17, 2011): Removed an erroneous note from the Affected Software table pertaining to security updates KB2535818 and KB2540162 for Microsoft PowerPoint 2007 Service Pack 2.
  • V1.2 (June 14, 2011): Announced that the updates for Microsoft Office for Mac, which were not available when the bulletin was originally published, are now available in bulletin MS11-045. Also, for both vulnerabilities addressed by this bulletin, corrected erroneous registry script entries in the workarounds for setting Office File Validation to disable the opening of files that fail validation.