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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.1123
          Vulnerability in Windows Mail and Windows Meeting Space
                Could Allow Remote Code Execution (2620704)
                              9 November 2011

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

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows Vista
                   Windows Server 2008
                   Windows 7
                   Windows Server 2008 R2
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-2016  

Original Bulletin: 
   http://technet.microsoft.com/en-us/security/bulletin/ms11-085

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Microsoft Security Bulletin MS11-085 - Important
Vulnerability in Windows Mail and Windows Meeting Space Could Allow Remote 
Code Execution (2620704)

Published: Tuesday, November 08, 2011

Version: 1.0

General Information

Executive Summary

This security update resolves a privately reported vulnerability in Microsoft 
Windows. The vulnerability could allow remote code execution if a user opens a 
legitimate file (such as an .eml or .wcinv file) that is located in the same 
network directory as a specially crafted dynamic link library (DLL) file. Then, 
while opening the legitimate file, Windows Mail or Windows Meeting Space could 
attempt to load the DLL file and execute any code it contained. For an attack 
to be successful, a user must visit an untrusted remote file system location or 
WebDAV share and open a legitimate file (such as an .eml or .wcinv file) from 
this location that is then loaded by a vulnerable application.

This security update is rated Important for all supported editions of Windows 
Vista; is rated Moderate for all supported editions of Windows Server 2008; and 
is rated Low for all supported editions of Windows 7 and Windows Server 2008 R2. 
For more information, see the subsection, Affected and Non-Affected Software, 
in this section.

Affected Software

Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2**
Windows Server 2008 for x64-based Systems Service Pack 2**
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems and Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems and Windows 7 for x64-based Systems 
  Service Pack 1
Windows Server 2008 R2 for x64-based Systems and Windows Server 2008 R2 for 
  x64-based Systems Service Pack 1**
Windows Server 2008 R2 for Itanium-based Systems and Windows Server 2008 R2 for 
  Itanium-based Systems Service Pack 1

**Server Core installation not affected. The vulnerabilities addressed by this 
update do not affect supported editions of Windows Server 2008 or Windows Server 
2008 R2 as indicated, when installed using the Server Core installation option.

Vulnerability Information

Windows Mail Insecure Library Loading Vulnerability - CVE-2011-2016

A remote code execution vulnerability exists in the way that Windows Mail and 
Windows Meeting Space handle the loading of DLL files. An attacker who 
successfully exploited this vulnerability could take complete control of an 
affected system. An attacker could then install programs; view, change, or delete 
data; or create new accounts with full user rights. 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.

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===========================================================================
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The University of Queensland
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