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ESB-2014.0721 - [Win] Microsoft Windows: Increased privileges - Existing account

Date: 14 May 2014

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0721
           Vulnerability in Group Policy Preferences Could Allow
                     Elevation of Privilege (2962486)
                                14 May 2014

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

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

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows Vista
                   Windows Server 2008
                   Windows 7
                   Windows Server 2008 R2
                   Windows 8
                   Windows 8.1
                   Windows Server 2012
                   Windows Server 2012 R2
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-1812  

Original Bulletin: 
   http://technet.microsoft.com/en-us/security/bulletin/ms14-025

- --------------------------BEGIN INCLUDED TEXT--------------------

Microsoft Security Bulletin - MS14-025 - Important

Vulnerability in Group Policy Preferences Could Allow Elevation of Privilege 
(2962486)

Published Date: 13 May, 2014

Version: 1.0

General Information

Executive Summary

This security update resolves a publicly disclosed vulnerability in Microsoft 
Windows. The vulnerability could allow elevation of privilege if Active 
Directory Group Policy preferences are used to distribute passwords across the 
domain - a practice that could allow an attacker to retrieve and decrypt the 
password stored with Group Policy preferences.

This security update is rated Important for Remote Server Administration Tools 
when installed on affected editions of Windows Vista, Windows 7, Windows 8, 
and Windows 8.1. The update is also rated Important for all affected editions 
of Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and 
Windows Server 2012 R2. 

Affected Software

Windows Vista
Windows Server 2008
Windows 7
Windows Server 2008 R2
Windows 8
Windows 8.1
Windows Server 2012 
Windows Server 2012 R2

Vulnerability Information

Group Policy Preferences Password Elevation of Privilege Vulnerability - 
CVE-2014-1812

An elevation of privilege vulnerability exists in the way that Active 
Directory distributes passwords that are configured using Group Policy 
preferences. An authenticated attacker who successfully exploited the 
vulnerability could decrypt the passwords and use them to elevate 
privileges on the domain.

- --------------------------END INCLUDED TEXT--------------------

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        http://www.auscert.org.au/render.html?cid=1980

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
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