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             AUSCERT External Security Bulletin Redistribution

                               ESB-2011.0817
       Vulnerability in Remote Access Service NDISTAPI Driver Could
                       Allow Elevation of Privilege
                              10 August 2011

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

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows XP
                   Windows Server 2003
Impact/Access:     Administrator Compromise -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-1974  

Original Bulletin: 
   http://www.microsoft.com/technet/security/bulletin/MS11-062.mspx

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Microsoft Security Bulletin MS11-062 - Important
Vulnerability in Remote Access Service NDISTAPI Driver Could Allow Elevation of Privilege (2566454)
Published: August 09, 2011
Version: 1.0

General Information

Executive Summary

   This security update resolves a privately reported vulnerability in all
   supported editions of Windows XP and Windows Server 2003. This security
   update is rated Important for all supported editions of Windows XP and
   Windows Server 2003. Windows Vista, Windows Server 2008, Windows 7, and
   Windows Server 2008 R2 are not affected by the vulnerability. For more
   information, see the subsection, Affected and Non-Affected Software, in
   this section.

   The vulnerability could allow elevation of privilege if an attacker
   logs on to an affected system and runs a specially crafted application
   designed to exploit the vulnerability and take complete control over
   the affected system. An attacker must have valid logon credentials and
   be able to log on locally to exploit this vulnerability.

Affected Software

   Windows XP Service Pack 3
   Windows XP Professional x64 Edition Service Pack 2
   Windows Server 2003 Service Pack 2
   Windows Server 2003 x64 Edition Service Pack 2
   Windows Server 2003 with SP2 for Itanium-based Systems

Vulnerability Information

   NDISTAPI Elevation of Privilege Vulnerability - CVE-2011-1974

   An elevation of privilege vulnerability exists in the Remote Access
   Service NDISTAPI driver. The vulnerability is caused when the NDISTAPI
   driver improperly validates user-supplied input when passing data from
   user mode to the Windows kernel. A local attacker who successfully
   exploited this vulnerability could execute arbitrary code and take
   complete control of an affected system. The 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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