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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0412
        Vulnerabilities in Microsoft Office Could Allow Remote Code
                            Execution (2489293)
                               13 April 2011

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

Product:           Microsoft Office XP Service Pack 3
                   Microsoft Office 2003 Service Pack 3
                   Microsoft Office 2007 Service Pack 2
                   Microsoft Office 2004 for Mac
                   Microsoft Office 2008 for Mac
                   Open XML File Format Converter for Mac
Publisher:         Microsoft
Operating System:  Windows
                   Mac OS X
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-0977 CVE-2011-0107 

Original Bulletin: 
   http://www.microsoft.com/technet/security/Bulletin/MS11-023.mspx

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Microsoft Security Bulletin MS11-023 - Important
Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (2489293)
Version: 1.0

General Information

Executive Summary

This security update resolves one publicly disclosed vulnerability and one 
privately reported vulnerability in Microsoft Office. The vulnerability could 
allow remote code execution if a user opens a specially crafted Office file 
or if a user opens a legitimate Office file that is located in the same 
network directory as a specially crafted library 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.

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

Affected Software 

Microsoft Office XP Service Pack 3
Microsoft Office 2003 Service Pack 3
Microsoft Office 2007 Service Pack 2
Microsoft Office 2004 for Mac
Microsoft Office 2008 for Mac
Open XML File Format Converter for Mac

Vulnerability Information

Office Component Insecure Library Loading Vulnerability - CVE-2011-0107

A remote code execution vulnerability exists in the way that Microsoft Office 
handles 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.

Microsoft Office Graphic Object Dereferencing Vulnerability - CVE-2011-0977

A remote code execution vulnerability exists in the way that Microsoft Office 
handles graphic objects when parsing a specially crafted Office file. 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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