[ISSForum] ISS Security Brief: Vulnerability in Microsoft Windows Messenger Service

[X-Force <xforce@xxxxxxx>]

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Internet Security Systems Security Brief
October 15, 2003

Vulnerability in Microsoft Windows Messenger Service

Synopsis:

Microsoft has released a security bulletin (MS03-043) describing a buffer
overflow flaw in the Windows "Messenger Service". The "Messenger Service"
is enabled by default on all Windows NT, Windows 2000, and Windows XP
desktops and servers. It is important to note that the Microsoft Messenger
Service is unrelated to Microsoft MSN Messenger.

Impact:

The vulnerability may allow remote attackers to execute arbitrary code on
vulnerable systems with administrator privileges. X-Force believes that
the vulnerability is extremely widespread in nature. Vulnerabilities of
this nature have led to Internet worms such as "MS Blast/Blaster",
"Nachi", and "SQL Slammer". History has shown that vulnerabilities of this
magnitude lead almost immediately to exploit tool development by the
underground community and extensive and widespread attacks. The
vulnerability can be triggered via UDP, leaving open the possibility of
extremely rapid worm propagation.

Affected Versions:

Microsoft Windows NT 4.0
Microsoft Windows NT 4.0, Terminal Server Edition
Microsoft Windows 2000
Microsoft Windows XP 
Microsoft Windows 2003

For the complete ISS X-Force Security Alert, please visit:
http://xforce.iss.net/xforce/alerts/id/156

______ 

About Internet Security Systems (ISS) 
Founded in 1994, Internet Security Systems (ISS) (Nasdaq: ISSX) is a 
pioneer and world leader in software and services that protect critical 
online resources from an ever-changing spectrum of threats and misuse. 
Internet Security Systems is headquartered in Atlanta, GA, with 
additional operations throughout the Americas, Asia, Australia, Europe 
and the Middle East. 

Copyright (c) 2003 Internet Security Systems, Inc. All rights reserved 
worldwide. 

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