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             AUSCERT External Security Bulletin Redistribution

                               ESB-2012.0168
        Vulnerabilities in Microsoft Visio Viewer 2010 Could Allow
                           Remote Code Execution
                             15 February 2012

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

Product:           Microsoft Visio Viewer
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-0138 CVE-2012-0137 CVE-2012-0136
                   CVE-2012-0020 CVE-2012-0019 

Original Bulletin: 
   http://technet.microsoft.com/en-us/security/bulletin/ms12-015

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Microsoft Security Bulletin MS12-015 - Important

Vulnerabilities in Microsoft Visio Viewer 2010 Could Allow Remote Code
Execution (2663510)

Published Date: February 14, 2012

Version: 1.0

General Information

Executive Summary

This security update resolves five privately reported vulnerabilities in
Microsoft Office. The vulnerabilities could allow remote code execution if a
user opens a specially crafted Visio file. An attacker who successfully
exploited 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
Visio Viewer 2010. For more information, see the subsection, Affected Software,
in this section.

Affected Software

Microsoft Visio Viewer 2010
Microsoft Visio Viewer 2010 Service Pack 1 (32-bit Edition)
Microsoft Visio Viewer 2010
Microsoft Visio Viewer 2010 Service Pack 1 (64-bit Edition)

Vulnerability Information

VSD File Format Memory Corruption Vulnerability - CVE-2012-0019

A remote code execution vulnerability exists in the way that Microsoft Visio
Viewer validates attributes when handling specially crafted Visio 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 affected than users who operate with administrative user rights.

VSD File Format Memory Corruption Vulnerability - CVE-2012-0020

A remote code execution vulnerability exists in the way that Microsoft Visio
Viewer validates attributes when handling specially crafted Visio 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 affected than users who operate with administrative user rights.

VSD File Format Memory Corruption Vulnerability - CVE-2012-0136

A remote code execution vulnerability exists in the way that Microsoft Visio
Viewer validates attributes when handling specially crafted Visio 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 affected than users who operate with administrative user rights.

VSD File Format Memory Corruption Vulnerability - CVE-2012-0137

A remote code execution vulnerability exists in the way that Microsoft Visio
Viewer validates attributes when handling specially crafted Visio 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 affected than users who operate with administrative user rights.

VSD File Format Memory Corruption Vulnerability - CVE-2012-0138

A remote code execution vulnerability exists in the way that Microsoft Visio
Viewer validates attributes when handling specially crafted Visio 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 affected than users who operate with administrative user rights.

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