NetCat CMS 5.0.1 Cross Site Scripting / HTTP Parameter Pollution

`Title:  
======  
NetCat CMS v5.0.1 - Multiple Web Vulnerabilities  
  
  
Date:  
=====  
2012-10-31  
  
  
References:  
===========  
http://www.vulnerability-lab.com/get_content.php?id=738  
  
  
VL-ID:  
=====  
738  
  
  
Common Vulnerability Scoring System:  
====================================  
2.5  
  
  
Introduction:  
=============  
Vendor Website: http://netcat.ru (RU)  
  
  
Abstract:  
=========  
The Security Effect Research Team discovered multiple Web Vulnerabilities in the russian Bce NetCat v5.0.1 content management system.  
  
  
Report-Timeline:  
================  
2012-10-31: Public Disclosure  
  
  
Status:  
========  
Published  
  
  
Exploitation-Technique:  
=======================  
Remote  
  
  
Severity:  
=========  
Medium  
  
  
Details:  
========  
Multiple client side cross site scripting and http parameter pollution vulnerabilities are detected in the russian Bce NetCat v5.0.1 content management system.  
The non persistent cross site scripting vulnerabilities allow remote attackers to form malicious client side web requests to steal cms customer session   
information. The client side crlf vulnerability allows remote attackers to change the GET and POST request with own values to manipulate the http protocol request.  
  
The first client side cross site scripting vulnerability is located in the search module with the bound vulnerable search_query application parameter.  
The secound http parameter pollution vulnerability is located in the post.php file when processing to request via the bound vulnerable redirect_url   
parameter request.  
  
Successful exploitation of the vulnerabilities can result in client side http parameter manipulation via post/get, client side phishing, client side   
cookie stealing via cross site scripting and client side cms web context manipulation.  
  
  
Vulnerable Module(s):  
[+] search  
[+] post  
  
Vulnerable Parameter(s):  
[+] search_query  
[+] redirect_url  
  
  
Proof of Concept:  
=================  
1. Client Side - Cross Site Scripting  
The client side cross site scripting vulnerabilities can be exploited by remote attackers without privileged application user   
account and with medium or high required user inter action. For demonstration or reproduce ...  
  
1.1 - In URL address.  
  
PoC:  
http://site.127.0.0.1:3666/?’ onmouseover=’prompt(document.cookie)’bad=’>  
  
  
1.2 - In “search_query” parameter.  
  
PoC:  
http://site.127.0.0.1:3666/search/?search_query=’ onmouseover=prompt(document.cookie) bad=’  
  
  
  
2. Client Side via POST - CRLF injection/HTTP Parameter Pollution  
The client side crlf vulnerability can be exploited by remote attackers without privileged application user   
account and with medium or high required user inter action. For demonstration or reproduce ...  
  
In /netcat/modules/netshop/post.php URL encoded POST input redirect_url was set to NetCatStatus:hacked_by_seceffect  
  
PoC: POST  
http://site.127.0.0.1:3666/netcat/modules/netshop/post.php  
cart%5b353%5d%5b10%5d=1&cart_mode=add&redirect_url=%0d%0a%20NetCatStatus:hacked_by_seceffect  
  
  
Risk:  
=====  
1.1  
The security risk of the client side cross site scripting vulnerabilities are estimated as low(+)|(-)medium.  
  
1.2  
The security risk of the http parameter pollution vulnerability is estimated as medium(-).  
  
  
  
Credits:  
========  
SECURITY EFFECT [Research Team] - (http://seceffect.tumblr.com/)  
  
  
Disclaimer:  
===========  
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--   
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