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[SNS Advisory No.64] IP Messenger for Win Buffer Overflow Vulnerability
From: "Secure Net Service(SNS) Security Advisory" <snsadv () lac co jp>
Date: Tue, 13 May 2003 13:10:53 +0900

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SNS Advisory No.64
IP Messenger for Win Buffer Overflow Vulnerability

Problem first discovered on: Mon, 24 Mar 2003
Published on: Tue, 13 May 2003
----------------------------------------------------------------------

Overview:
---------
  IP Messenger for Win ver 2.02 and previous versions are prone to a 
  buffer overflow vulnerability in the file & folder transfer mechanism.

Problem Description:
--------------------
  A buffer overflow occurs when a user attempts to save a file containing 
  an unusually long filename received through IP Messenger for Win. 
     
  Remote attackers could take advantage of this flaw to execute code of 
  their choice with the privileges of the IP Messenger user.

  Note that versions of IP Messenger that do not support the file & folder 
  transfer mechanism are not affected by this issue.

Tested Versions:
----------------
  IP Messenger for Win ver 2.00
  IP Messenger for Win ver 2.01
  IP Messenger for Win ver 2.02

Solution:
---------
  It is possible to rectify this problem by upgrading to IP Messenger 
  for Win ver 2.03. 

  http://www.asahi-net.or.jp/~VZ4H-SRUZ/ipmsg-eng.html

Discovered by:
--------------
  Hisayuki Shinmachi

Acknowledgements:
-----------------
Thanks to:

  Hiroaki Shirouzu 

Disclaimer:
-----------
  The information contained in this advisory may be revised without prior 
  notice and is provided as it is.  Users shall take their own risk when 
  taking any actions following reading this advisory.  LAC Co., Ltd. shall 
  take no responsibility for any problems, loss or damage caused by, or by 
  the use of information provided here.

  This advisory can be found at the following URL:
  http://www.lac.co.jp/security/english/snsadv_e/64_e.html

------------------------------------------------------------------
SecureNet Service(SNS) Security Advisory <snsadv () lac co jp>
Computer Security Laboratory, LAC  http://www.lac.co.jp/security/




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