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Message-ID: <63244864@web.de>
Date: Mon Aug 22 11:58:27 2005
From: Jan_Kantert at web.de (Jan Kantert)
Subject: BBCode [IMG] [/IMG ] Tag Vulnerability
There is a very similar trick: Often you also can take over PHP-session and get authentificated as another user, if you just log referers of an image loaded using [IMG][/IMG]. The user needs to have disabled cookies so that the PHPSESSION is set in URL. This can be done automatically using a little Perl/PHP-Script. You can use regex to parse out which useraccount you compromised. If it was an administrator or moderator you could delete posts or kick users.
Greetings,
Jan
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