CsForum v0.8 - Cross Site Scripting Vulnerability

Type vulnerlab
Reporter Vulnerability Research Laboratory - Chokri B.A. (Me!ster)
Modified 2012-04-04T00:00:00


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

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Product & Service 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 Advisory Information:
A Vulnerability Laboratory Researcher discovered  a Cross Site Scripting Vulnerability on CsForum v0.8 application.

Vulnerability Disclosure Timeline:
2012-04-08:	Public or Non-Public Disclosure

Discovery Status:

Exploitation Technique:

Severity Level:

Technical Details & Description:
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


Proof of Concept (PoC):
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

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

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

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