Title:
======
GENU CMS 2012.3 - Multiple SQL Injection Vulnerabilities
Date:
=====
2012-04-30
References:
===========
http://www.vulnerability-lab.com/get_content.php?id=538
VL-ID:
=====
538
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.
(Copy of the Vendor Homepage: http://www.gnew.fr)
Abstract:
=========
A Vulnerability Laboratory Research Team discovered multiple SQL Injection vulnerabilities in GENU CMS 2012.3 content management system.
Report-Timeline:
================
2012-04-28: Vendor Fix/Patch by Check
2012-04-30: Public or Non-Public Disclosure
Status:
========
Published
Exploitation-Technique:
=======================
Remote
Severity:
=========
Critical
Details:
========
A SQL Injection vulnerability is detected in GENU CMS 2012.3.
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.
Vulnerable Module(s):
[+] posts/search.php
[+] news/search.php
[+] comments/search.php
Proof of Concept:
=================
The sql injection vulnerabilities can be exploited by remote attackers without user inter action. For demonstration or reproduce ...
Word in 'search' must consist of at least two characters
PoC:
http://127.0.0.1:8080/GENU/news/search.php?search=xd&match=`news_subject[SQL-Injection]
http://127.0.0.1:8080/GENU/comments/search.php?search=xd&match=`news_subject[SQL-Injection]
http://127.0.0.1:8080/GENU/posts/search.php?search=xd&match=`news_subject[SQL-Injection]
Solution:
=========
In file: /news/search.php
In line 82:
AND LOWER(` . TABLE_NEWS . `.` . $_GET[`match`] . `) LIKE \\`%` . strtolower($search) . `% `
In file: /comments/search.php
In line 77:
AND LOWER(` . TABLE_COMMENTS . `.` . $_GET[`match`] . `) LIKE `%` . strtolower($search) . `% `
In file: /posts/search.php
In line 78:
AND LOWER(` . TABLE_POSTS . `.` . $_GET[`match`] . `) LIKE `%` . strtolower($search) . `% `
Variable $_GET[`match`] is not filtered.
We must in this line`s edit $_GET[`match`] on $match and add code:
In file: /news/search.php
In line 71
In file: /comments/search.php
In line 69
In file: /posts/search.php
In line 69
e.g code:
if(isset($_GET[`match`]))
{
if ($_GET[`match`] == `news_subject`) $match = `news_subject`;
if ($_GET[`match`] == `news_text`) $match = `news_text`;
else $match = `news_subject`;
}
Risk:
=====
The security risk of the sql injection vulnerabilities are estimated as high(+).
Credits:
========
Vulnerability Laboratory [Research Team] - snup (snup@vulnerability-lab.com)
