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             AUSCERT External Security Bulletin Redistribution

                               ESB-2013.0500
         Vulnerability in Remote Desktop Client Could Allow Remote
                         Code Execution (2828223)
                               9 April 2013

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

Product:           Remote Desktop Client
Publisher:         Microsoft
Operating System:  Windows XP
                   Windows Server 2003
                   Windows Vista
                   Windows Server 2008
                   Windows 7
                   Windows Server 2008 R2
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2013-1296  

Original Bulletin: 
   https://technet.microsoft.com/en-us/security/bulletin/ms13-029

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Microsoft Security Bulletin MS13-029 - Critical

Vulnerability in Remote Desktop Client Could Allow Remote Code Execution 
(2828223)

Published Date: April 9, 2013

Version: 1.0

General Information

Executive Summary

This security update resolves a privately reported vulnerability in Windows 
Remote Desktop Client. The vulnerability could allow remote code execution if 
a user visits a specially crafted webpage that is designed to exploit this 
vulnerability. The attacker could also take advantage of compromised websites 
and websites that accept or host user-provided content or advertisements. These
websites could contain specially crafted content that could exploit this 
vulnerability. In all cases, however, an attacker would have no way to force 
users to view the attacker-controlled content. Instead, an attacker would have
to convince users to take action, typically by getting them to click a link in
an email message or in an Instant Messenger message that takes users to the 
attacker's website, or by getting them to open an attachment sent through 
email.

This security update is rated Critical for Remote Desktop Connection 6.1 Client
and Remote Desktop Connection 7.0 Client on supported editions of Windows XP, 
Windows Vista, and Windows 7. It is rated Moderate for Remote Desktop 
Connection 6.1 Client and Remote Desktop Connection 7.0 Client on supported 
editions of Windows Server 2003, Windows Server 2008, and Windows Server 2008 
R2.

Affected Software

Remote Desktop Connection 6.1 Client (2813345)
Remote Desktop Connection 7.0 Client (2813347)

Vulnerability Information

RDP ActiveX Control Remote Code Execution Vulnerability - CVE-2013-1296

A remote code execution vulnerability exists when the Remote Desktop ActiveX 
control, mstscax.dll, attempts to access an object in memory that has been 
deleted. An attacker could exploit the vulnerability by convincing the user 
to visit a specially crafted webpage. An attacker who successfully exploited 
this vulnerability could gain the same user rights as the logged-on user.

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