BugTraq
phpBB 2.0.23 Session Hijacking Vulnerability Mar 18 2008 10:00PM
nbbn (at) gmx (dot) net [email concealed] (nbbn gmx net)
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phpBB 2.0.23 Session Hijacking Vulnerability +
found by NBBN 13 Mar 2008 +
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::Information about this vulnerabilty
If a moderator or an admin close a thread in phpBB 2.0.X, the sessionid
is sending with GET:

http://site.tld/phpBB2/modcp.php?t=1&mode=lock&sid=[session]

The admin/moderator are going to be redirected to the thread(with the
session). If an attacker has posted an image in his post, he can see the
referer and so the session id. And if the attacker have a good day and
the admin close the thread, he can use all admin-functions with csrf.

::Fix

No fix

::Workaround

Upgrade to phpBB3

::Tested under:

phpBB 2.0.23 (localhost)

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