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OSQA CMS 3b Cross Site Scripting

OSQA CMS 3b Cross Site Scripting
Posted Feb 27, 2012
Authored by longrifle0x | Site vulnerability-lab.com

OSQA CMS version 3b suffers from a cross site scripting vulnerability.

tags | exploit, xss
MD5 | b854525d547f8cfab225d0e812767448

OSQA CMS 3b Cross Site Scripting

Change Mirror Download
OSQA CMS v3b - Multiple Persistent Vulnerabilities




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.

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

2012-02-27: Public or Non-Public Disclosure




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")//">

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

Vulnerability Research Laboratory - Ucha Gobejishvili ( longrifle0x )

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

Website: www.vulnerability-lab.com ; vuln-lab.com or vuln-db.com
Contact: admin@vulnerability-lab.com or support@vulnerability-lab.com


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