COVID19 Testing Management System 1.0 - SQL Injection (Auth Bypass)

# Exploit Title: COVID19 Testing Management System 1.0 - SQL Injection (Auth Bypass)
# Date: 19/05/2021
# Exploit Author: Rohit Burke
# Vendor Homepage: https://phpgurukul.com
# Software Link: https://phpgurukul.com/covid19-testing-management-system-using-php-and-mysql/
# Version: 1.0
# Tested on: Windows 10

SQL Injection:
Injection flaws, such as SQL, NoSQL, and LDAP injection, occur when
untrusted data is sent to an interpreter as part of a command or query. The
attacker’s hostile data can trick the interpreter into executing unintended
commands or accessing data without proper authorization.

Attack vector:
An attacker can gain admin panel access using malicious sql injection queries.

Steps to reproduce:
1) Open admin login page using following URl:
"http://localhost/covid-tms/login.php"

2) Now put the payload below the Username and password field.
Payload: admin' or '1'='1 and you will be successfully logged In as Admin without any credentials.