OSQA CMS v3b - Multiple Persistent Vulnerabilities

["research () vulnerability-lab com" <research () vulnerability-lab com>]

Title:
======
OSQA CMS v3b - Multiple Persistent Vulnerabilities


Date:
=====
2012-02-27


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=461


VL-ID:
=====
461


Introduction:
=============
OSQA is the Open Source Q&A System. It is free software licensed under the GPL, and you can download the source code 
for OSQA from our Subversion server. OSQA is originally based on CNProg, an excellent Chinese Q&A web application 
written 
by Mike Chen and Sailing Cai. OSQA is written in Python and powered by the Django application framework. 


Abstract:
=========
The Vulnerability Lab Research Team discovered multiple persistent Input Validation Vulnerabilities on OSQAs CMS v3b.


Report-Timeline:
================
2012-02-27:     Public or Non-Public Disclosure


Status:
========
Published


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


Severity:
=========
Medium


Details:
========
Multiple persistent cross site scripting vulnerabilities are detected on OSQAs CMS v3b. The vulnerability allows remote 
attackers 
to hijack customer, moderator or admin sessions with high required user inter action or local low privileged user 
account & medium 
required user inter action. Successful exploitation can result in account steal, phishing & application-side content 
request manipulation.

Vulnerable Module(s):
                                                              [+] Url Bar
                                                              [+] Picture Bar
                                                              [+] Blockquote


Proof of Concept:
=================
The vulnerabilities can be exploited by local low privileged user accounts or remote attackers with high required user 
inter action.
For demonstration or reproduce ...

XSS #1 
http://localhost/questions/ask/ press url bar & put xss code <img src="<img src=search"/onerror=alert("xss")//">

XSS #2  
http://localhost/questions/ask/ press picture bar & put xss code <img src="<img src=search"/onerror=alert("xss")//">


Risk:
=====
The security risk of the cross site scripting vulnerabilities are estimated as medium(-).


Credits:
========
Vulnerability Research Laboratory - Ucha Gobejishvili ( longrifle0x ) 


Disclaimer:
===========
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                                                Copyright © 2012|Vulnerability-Lab

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