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             AUSCERT External Security Bulletin Redistribution

        Microsoft Security Bulletin MS15-067: Vulnerability in RDP
                Could Allow Remote Code Execution (3073094)
                               15 July 2015


        AusCERT Security Bulletin Summary

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-2373  

Original Bulletin: 

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Microsoft Security Bulletin MS15-067: Vulnerability in RDP Could Allow Remote
Code Execution (3073094)

Bulletin Number: MS15-067

Bulletin Title: Vulnerability in RDP Could Allow Remote Code Execution

Severity: Critical

KB Article: 3073094

Version: 1.0

Published Date: July 14, 2015

Executive Summary

This security update resolves a vulnerability in Microsoft Windows. The 
vulnerability could allow remote code execution if an attacker sends a 
specially crafted sequence of packets to a targeted system with theRemote 
Desktop Protocol (RDP) server service enabled. By default, the RDP server 
service is not enabled on any Windows operating system. Systems that do not 
have the RDP server service enabled are not at risk.

This security update is rated Critical for Windows 7 for 32-bit Systems and 
Windows 8 for 32-bit Systems. For more information, see the Affected Software

Affected Software

Windows 7 for 32-bit Systems Service Pack 1

Windows 8 for 32-bit Systems

Vulnerability Information

Remote Desktop Protocol (RDP) Remote Code Execution Vulnerability - 

A remote code execution vulnerability exists in how the Remote Desktop 
Protocol (RDP) (terminal) service handles packets. While the most likely 
outcome of this vulnerability is denial of the remote desktop (terminal) 
service (DOS), remote code execution is possible.

To exploit the vulnerability, an attacker could send a specially crafted 
sequence of packets to a system running the RDP server service. An attacker 
who successfully exploited this vulnerability could 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. The update 
addresses the vulnerability by modifying how the terminal service handles 

Microsoft received information about this vulnerability through coordinated 
vulnerability disclosure. When this security bulletin was issued, Microsoft 
had not received any information to indicate that this vulnerability had been
publicly used to attack customers.

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