CsForum v0.8 - Cross Site Scripting Vulnerability

[Research <research@xxxxxxxxxxxxxxxxxxxxx>]

Title:
======
CsForum v0.8 - Cross Site Scripting Vulnerability


Date:
=====
2012-04-05


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=496


VL-ID:
=====
496


Introduction:
=============
Forum very simple installation, this script is very light and yet it has 
several functionalities such as marking of read messages 
display tree with sending mail in case of response. It is also very easy to 
integrate in your site thanks to the insertion of pages 
of your choice before and after the forum header.php and footer.php

(Copy of the Vendor Homepage: 
http://www.comscripts.com/scripts/php.cs-forum.643.html )


Abstract:
=========
A Vulnerability Laboratory Researcher discovered  a Cross Site Scripting 
Vulnerability on CsForum v0.8 application.


Report-Timeline:
================
2012-04-08:     Public or Non-Public Disclosure


Status:
========
Published


Exploitation-Technique:
=======================
Remote


Severity:
=========
Low


Details:
========
A client side cross site scripting vulnerability is detected on the CsForum 
v0.8 application.
The vulnerability allows an attacker with privileged user account to hijack 
customer/moderator/admin sessions with high required user inter 
action. Successful exploitation can result in account steal or client side 
context manipulation when processing affected module
application requests.

Vulnerable Module(s):
                                      [+] read.php

Picture(s):
                                      ../1.png


Proof of Concept:
=================
The vulnerability can be exploited by remote attacker with medium required user 
inter action. For demonstration or reproduce ...

String : "><img src="tester1337.png" onerror=alert("CROSS-SITE-SCRIPTING2") />

.Proof :
<img src="tester1337.png" onerror=alert("cross-site-scripting2") />" 
title="Site de l'auteur">

Example : http://alain.lc.free.fr/csforum8/read.php?id=527&debut=8


Risk:
=====
The security risk of the client side cross site scripting vulnerability is 
estimated as low.


Credits:
========
Vulnerability Research Laboratory   -   Chokri B.A. (Me!ster)


Disclaimer:
===========
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warranty. Vulnerability-Lab disclaims all warranties, 
either expressed or implied, including the warranties of merchantability and 
capability for a particular purpose. Vulnerability-
Lab or its suppliers are not liable in any case of damage, including direct, 
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                                                Copyright © 2012 
Vulnerability-Lab

-- 
VULNERABILITY RESEARCH LABORATORY TEAM
Website: www.vulnerability-lab.com
Mail: research@xxxxxxxxxxxxxxxxxxxxx