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             AUSCERT External Security Bulletin Redistribution

                               ESB-2015.0084
        Vulnerability in Windows Telnet Service Could Allow Remote
                         Code Execution (3020393)
                              14 January 2015

===========================================================================

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

Product:           Microsoft Windows
Publisher:         Microsoft
Operating System:  Windows Server 2003
                   Windows Vista
                   Windows Server 2008
                   Windows 7
                   Windows Server 2008 R2
                   Windows 8
                   Windows 8.1
                   Windows Server 2012
                   Windows Server 2012 R2
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-0014  

Original Bulletin: 
   https://technet.microsoft.com/en-us/library/security/MS15-002

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Microsoft Security Bulletin MS15-002 - Critical

Vulnerability in Windows Telnet Service Could Allow Remote Code Execution 
(3020393)

Published: January 13, 2015

Version: 1.0

Executive Summary

This security update resolves a privately reported vulnerability in Microsoft
Windows. The vulnerability could allow remote code execution if an attacker 
sends specially crafted packets to an affected Windows server. Only customers
who enable this service are vulnerable. By default, Telnet is installed but 
not enabled on Windows Server 2003. Telnet is not installed by default on 
Windows Vista and later operating systems.

This security update is rated Critical for all supported releases of Microsoft
Windows.

Affected Software

Windows Server 2003 Service Pack 2

Windows Server 2003 x64 Edition Service Pack 2

Windows Server 2003 with SP2 for Itanium-based Systems

Windows Vista Service Pack 2

Windows Vista x64 Edition Service Pack 2

Windows Server 2008 for 32-bit Systems Service Pack 2

Windows Server 2008 for x64-based Systems Service Pack 2

Windows Server 2008 for Itanium-based Systems Service Pack 2

Windows 7 for 32-bit Systems Service Pack 1

Windows 7 for x64-based Systems Service Pack 1

Windows Server 2008 R2 for x64-based Systems Service Pack 1

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1

Windows 8 for 32-bit Systems

Windows 8 for x64-based Systems

Windows 8.1 for 32-bit Systems

Windows 8.1 for x64-based Systems

Windows Server 2012

Windows Server 2012 R2

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core 
installation)

Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core 
installation)

Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core 
installation)

Windows Server 2012 (Server Core installation)

Windows Server 2012 R2 (Server Core installation)

Vulnerability Information

Windows Telnet Service Buffer Overflow Vulnerability - CVE-2015-0014

A buffer overflow vulnerability exists in Windows Telnet service that could 
allow remote code execution. The vulnerability is caused when the Telnet 
service improperly validates user input. An attacker could attempt to exploit
this vulnerability by sending specially crafted telnet packets to a Windows 
server, and if successful, could then run arbitrary code on the server. The 
update addresses the vulnerability by correcting how Telnet validates user 
input.

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

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