[20499] in bugtraq

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Mirabilis ICQ WebFront Plug-in Denial of Service

daemon@ATHENA.MIT.EDU (SNS Research)
Sat Apr 28 13:16:00 2001

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Date:         Sat, 28 Apr 2001 02:38:10 +0200
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From: SNS Research <vuln-dev@greyhack.com>
To: BUGTRAQ@SECURITYFOCUS.COM

Strumpf Noir Society Advisories
! Public release !
<--#


-= Mirabilis ICQ WebFront Plug-in Denial of Service =-

Release date: Saturday, April 28, 2001


Introduction:

WebFront is a plugin for Mirabilis' ICQ messaging program which
allows a user to setup a web page through ICQ.

ICQ WebFront is available for ICQ from vendor Mirabilis'
website: http://www.icq.com


Problem:

The web server on which this plugin relies is susceptible to a DoS
attack through a malformed GET request. If this request contains
86 or more %'s or combinations of %'s with other characters (for
example ascii encoded dots or backslashes) the ICQ program will
begin consuming 100% cpu and will become unresponsive.

A restart of the program is required to regain full functionality.


(..)


Solution:

This problem has been brought to the vendors attention, however no
fixes appear to be forthcoming at this time, we were only able to get a
"your message has been forwarded to the appropiate address" response.

This was tested against ICQ2000b Build 3278 running on MS Win2k.


yadayadayada

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compliant, all information is provided on AS IS basis.

EOF, but Strumpf Noir Society will return!

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