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www.waraxe.us Forum Index -> PhpNuke -> TINY_MCE / PhpNuke advisory
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TINY_MCE / PhpNuke advisory
PostPosted: Tue Nov 22, 2005 4:59 pm Reply with quote
waraxe
Site admin
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Joined: May 11, 2004
Posts: 2407
Location: Estonia, Tartu




From:

http://packetstormsecurity.org/0511-advisories/vulnuke78bx.txt

Code:

PHP Nuke <= 7.8 with TINY_MCE script CROSS-SITE-SCRIPTING Vulnerability
-----------------------------------------------------------------------
Software: PHP Nuke 7.8
Type: Cross-site scripting / html-injection
Testing-platform:
   PHP Nuke v7.8
   Linux Debian Sarge v3
   Mozilla-Firefox v1
   MySQL v4
   PHP v4
Risk: High
Date: 19 XI 2005
Vandor: PHP-Nuke (phpnuke.org)


Credit:
-------
Bartosz 'bratex' Nowakowski from bxportal.limes.com.pl


Description:
------------
PHP Nuke 7.8 is a advanced CMS (Content-Managment-System) designed to use in Internet.
The administrator has full control of all features and modules making his website
useful and 100% interactive with users.


Vulnerability:
--------------
PHP Nuke <= 7.8, if used with TINY_MCE content editor (extension to the TEXTAREA),
has a cross-site scripting vulnerability.

As TINY_MCE is protected from malicious input by JavaScript, attacker should turn
JavaScript off, then go to Submit_News or other similar module he/she has
access to (not such unusual!), write:

  [some text]<a href="[addr]" onclick="javascript:alert(document.cookie);">this addr</a>.

And submit :)

If site admin has JavaScript turned on, malicious script will execute when accepting
news in the administration panel. In example above, admin will see JavaScript
message box when trying to check submitted link. After experiments, I managed to grab
all admin's cookies ;) Have fun :P

Note: probably simple SCRIPT tag won't work. Instead, use for example IMG or A tags...


Vulnerable modules:
-------------------
  Submit_News
  Web_Links
  Downloads
  Journal
  Feedback (Vulnerability is useless, but exists)
  Articles and Surveys comments
  Maybe some other (unoficial) modules...



Solution:
---------
Turn off JS support in your browser, read carefully all posted data and wait for patch :)


Vendor:
-------
I sent this file to them :)
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TINY_MCE / PhpNuke advisory
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