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Microsoft Security Bulletin MS12-058 - Critical
Vulnerabilities in Microsoft Exchange Server WebReady Document Viewing Could Allow Remote Code Execution (2740358)

Published: Tuesday, August 14, 2012

Version: 1.0
General Information
Executive Summary

This security update resolves publicly disclosed vulnerabilities in Microsoft Exchange Server WebReady Document Viewing. The vulnerabilities could allow remote code execution in the security context of the transcoding service on the Exchange server if a user previews a specially crafted file using Outlook Web App (OWA). The transcoding service in Exchange that is used for WebReady Document Viewing is running in the LocalService account. The LocalService account has minimum privileges on the local computer and presents anonymous credentials on the network.

This security update is rated Critical for all supported editions of Microsoft Exchange Server 2007 and Microsoft Exchange Server 2010. For more information, see the subsection, Affected and Non-Affected Software, in this section.

The security update addresses the vulnerabilities by updating the affected Oracle Outside In libraries to a non-vulnerable version. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerabilities entry under the next section, Vulnerability Information.

This security update also addresses the vulnerabilities first described in Microsoft Security Advisory 2737111 for affected editions of Microsoft Exchange Server.

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 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
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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 
Software	Maximum Security Impact	Aggregate Severity Rating	Updates Replaced
Microsoft Server Software
Microsoft Exchange Server 2007 Service Pack 3 
(KB2734323)	Remote Code Execution	Critical	None
Microsoft Exchange Server 2010 Service Pack 1 
(KB2743248)	Remote Code Execution	Critical	None
Microsoft Exchange Server 2010 Service Pack 2 
(KB2706690)	Remote Code Execution	Critical	None

Non-Affected Software 
Microsoft Server Software
Microsoft Exchange Server 2003 Service Pack 2 
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Frequently Asked Questions (FAQ) Related to This Security Update
Vulnerability Information
Severity Ratings and Vulnerability Identifiers
Oracle Outside In contains multiple exploitable vulnerabilities
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 Dorman of the CERT/CC for working with us on multiple Oracle Outside In vulnerabilities (CVE-2012-1766, CVE-2012-1767, CVE-2012-1768, CVE-2012-1769, CVE-2012-1770, CVE-2012-1771, CVE-2012-1772, CVE-2012-1773, CVE-2012-3106, CVE-2012-3107, CVE-2012-3108, CVE-2012-3109, and CVE-2012-3110)

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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.