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             AUSCERT External Security Bulletin Redistribution

                               ESB-2010.1141
            Vulnerability in Consent User Interface Could Allow
                     Elevation of Privilege (2442962)
                             15 December 2010

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

Product:           Consent User Interface
Publisher:         Microsoft
Operating System:  Windows Vista
                   Windows 7
                   Windows Server 2008
Impact/Access:     Administrator Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-3961  

Original Bulletin: 
   http://www.microsoft.com/technet/security/Bulletin/MS10-100.mspx

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Microsoft Security Bulletin MS10-100 - Important

Vulnerability in Consent User Interface Could Allow Elevation of Privilege 
(2442962)

Version: 1.0

General Information

Executive Summary

  This security update resolves a privately reported vulnerability in the 
  Consent User Interface (UI). The vulnerability could allow elevation of 
  privilege if an attacker runs a specially crafted application on an
  affected system. An attacker must have valid logon credentials and the 
  SeImpersonatePrivilege and be able to log on locally to exploit this 
  vulnerability. The vulnerability could not be exploited remotely or by 
  anonymous users.

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

  The security update addresses the vulnerability by correcting the manner in 
  which the Consent UI processes values read from the registry. For more 
  information about the vulnerability, see the Frequently Asked Questions (FAQ)
  subsection for the specific vulnerability entry under the next section, 
  Vulnerability Information.

Affected Software

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

    **Server Core installation not affected.

Vulnerability Information

Consent UI Impersonation Vulnerability - CVE-2010-3961

  An elevation of privilege vulnerability exists in the way that the
  Consent User Interface (UI) improperly processes special values read
  from the registry. The vulnerability could allow an attacker to run code
  with elevated privileges. An attacker who successfully exploited this
  vulnerability could execute arbitrary code and 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.

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