Microsoft Word and Microsoft Office Web Apps: Execute Arbitrary Code/Commands -- Remote with User Interaction

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.2333
    Microsoft Security Bulletin - Vulnerabilities in Microsoft Word and
        Microsoft Office Web Apps Could Allow Remote Code Execution
                           - Critical (3017301)
                              9 December 2014

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

Product:           Microsoft Word and Microsoft Office Web Apps
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-6357 CVE-2014-6356 

Original Bulletin: 
   https://technet.microsoft.com/library/security/ms14-081

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Microsoft Security Bulletin MS14-081 - Critical

Vulnerabilities in Microsoft Word and Microsoft Office Web Apps Could Allow 
Remote Code Execution (3017301)

Published: December 9, 2014

Version: 1.0

Executive Summary

This security update resolves two privately reported vulnerabilities in 
Microsoft Word and Microsoft Office Web Apps. The vulnerabilities could allow
remote code execution if an attacker convinces a user to open or preview a 
specially crafted Microsoft Word file in an affected version of Microsoft 
Office software. An attacker who successfully exploited the vulnerabilities 
could gain the same user rights as the current user. If the current user is 
logged on with administrative user rights, an attacker could then install 
programs; view, change, or delete data; or create new accounts with full user
rights. Customers 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 Critical for all supported editions of Microsoft
Word 2007, Microsoft Office 2010, Microsoft Word 2010, Microsoft Word 2013, 
Microsoft Word 2013 RT, Microsoft Office for Mac 2011, Microsoft Word Viewer,
Microsoft Office Compatibility Pack, and for affected Microsoft Office 
services and Web Apps on supported editions of Microsoft SharePoint Server 
2010, Microsoft SharePoint Server 2013, and Microsoft Office Web Apps Server 
2013.

Affected Software

Microsoft Office 2007
Microsoft Word 2010
Microsoft Office 2013 and Microsoft Office 2013 RT
Microsoft SharePoint Server 2010
Microsoft SharePoint Server 2013
Microsoft Office Web Apps 2010
Microsoft Office Web Apps 2013

Vulnerability Information

Invalid Index Remote Code Execution Vulnerability - CVE-2014-6356

A remote code execution vulnerability exists in how Microsoft Word improperly
handles objects in memory while parsing specially crafted Office files. 
System memory may be corrupted in such a way that an attacker could execute
arbitrary code. An attacker who successfully exploited this vulnerability
could run arbitrary code in the context of the current user. If the current
user is logged on with administrative user rights, an attacker could take
complete control of the 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.

Use After Free Word Remote Code Execution Vulnerability - CVE-2014-6357

A remote code execution vulnerability exists in how Microsoft Word improperly
handles objects in memory while parsing specially crafted Office files. 
System memory may be corrupted in such a way that an attacker could execute 
arbitrary code. An attacker who successfully exploited this vulnerability
could run arbitrary code in the context of the current user. If the current
user is logged on with administrative user rights, an attacker could take 
complete control of the 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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