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phpCMS121.txt

phpCMS121.txt
Posted Dec 11, 2004
Authored by Cyrille Barthelemy | Site cyrille-barthelemy.com

phpCMS versions 1.2.1 and below suffer from information disclosure and cross site scripting flaws.

tags | advisory, xss, info disclosure
SHA-256 | 806a8881ffffbf74b2f09ca1f0f6f7b6e5099e5dc00aaa4a7873b39c8bc03b51

phpCMS121.txt

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Title: phpCMS <= 1.2.1 Xss Vulnerability, Information disclosure
Affects:
- <= 1.2.1
Effect: Cross Site Attack (session hijacking, ...)
Id: cbsa-0006
Release Date: 2004/11/26
Author: Cyrille Barthelemy <cb-publicbox@ifrance.com>


-- 1. Introduction
------------------------
phpCMS is a content management system, easily configurable with no particular
dependency and very flexible. Please go to [1] to read a complete description
of the project. The last version, 1.2.1, has been released on 2004, november
22.

-- 2. Problem
------------------
An implementation error in the validation of the user input lead to an Xss
vulnerability allowing a user to create cross site attacks, and also disclose
information about the server configuration when phpCMS is configured in
non-stealth mode with debug mode activated.
Example of exploitation :
http://[somehost]/parser/parser.php?file=<script>alert(document.cookie)</script>


The error page display the input supplied by the user, without filtering, and
the full path to the phpCMS root directory.
Example of exploitation :
http://[somehost]/parser/parser.php?file=donotexist
=>
phpCMS 1.2.1
Error: 07: could not find file for parsing.
/var/www/localhost/htdocsdonotexists/index.htm
^^^^^^^^^^^^^^^^^^^^^^^^^


-- 3. Solution
------------------
Upgrade to the next version 1.2.1.pl1, available at :
http://www.phpcms.de/download/index.en.html

_DO NOT_ run your configuration in debug mode with untrusted access.
_DO_ run in file stealth mode.


-- 4. References
---------------------
[1] phpCMS web site
http://www.phpcms.de/


-- 5. History
----------------
- 2004/11/24 : vulnerability discovered
- 2004/11/24 : vendor notified
- 2004/11/25 : vendor response
- 2004/11/25 : fix released

-- 6. Contact information
----------------------------------
Cyrille Barthelemy <cb-publicbox@ifrance.com>
Web Site : http://www.cyrille-barthelemy.com
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