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             AUSCERT External Security Bulletin Redistribution

  Vulnerability in Remote Desktop Protocol Could Allow Denial of Service
                              10 August 2011


        AusCERT Security Bulletin Summary

Product:           Remote Desktop Protocol
Publisher:         Microsoft
Operating System:  Windows XP
                   Windows Server 2003
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2011-1968  

Original Bulletin: 

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

Microsoft Security Bulletin MS11-065 - Important
Vulnerability in Remote Desktop Protocol Could Allow Denial of Service (2570222)
Published: August 09, 2011
Version: 1.0

General Information

Executive Summary

   This security update resolves a privately reported vulnerability in the
   Remote Desktop Protocol. The vulnerability could allow denial of
   service if an affected system received a sequence of specially crafted
   RDP packets. Microsoft has also received reports of limited, targeted
   attacks attempting to exploit this vulnerability. By default, the
   Remote Desktop Protocol (RDP) is not enabled on any Windows operating

   This security update is rated Important for all supported editions of
   Windows Server 2003 and Moderate for all supported editions of Windows
   XP. For more information, see the subsection, Affected and Non-Affected
   Software, in this section.

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

   Remote Desktop Protocol Vulnerability - CVE-2011-1968

   A denial of service vulnerability exists in the way that the Remote
   Desktop Protocol accesses an object in memory that has been improperly
   initialized or has been deleted. An attacker who successfully exploited
   this vulnerability could cause the target system to stop responding and
   automatically restart.

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