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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0766
       Vulnerability in Microsoft Exchange Server WebReady Document
            Viewing Could Allow Remote Code Execution (2740358)
                              15 August 2012

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Microsoft Exchange
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-2525  

Original Bulletin: 
   http://technet.microsoft.com/en-us/security/bulletin/MS12-058

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

Published Date: August 14, 2012

Version: 1.0

General Information

Executive Summary

This security update resolves a publicly disclosed vulnerability in Microsoft 
Exchange Server WebReady Document Viewing. The vulnerability 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.

Affected Software

Microsoft Exchange Server 2007 Service Pack 3 
Microsoft Exchange Server 2010 Service Pack 1 
Microsoft Exchange Server 2010 Service Pack 2 

Vulnerability Information

Oracle Outside In Libraries Remote Code Execution Vulnerability - CVE-2012-2525

A remote code execution vulnerability exists in Microsoft Exchange Server 
through the WebReady Document Viewing feature. The vulnerability could allow 
remote code execution as Local System if a user views a specially crafted file
through Outlook Web Access in a browser. An attacker who successfully 
exploited the vulnerability could run code on the affected server, but only as 
LocalService. The LocalService account has minimum privileges on the local 
computer and presents anonymous credentials on the network.

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===========================================================================
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