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"WordPress Plugin Live Chat Unlimited 2.8.3 - Cross-Site Scripting"

Author

m0ze

Platform

php

Release date

2019-06-25

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# Exploit Title: Live Chat Unlimited v2.8.3 Stored XSS Injection
# Google Dork: inurl:"wp-content/plugins/screets-lcx"
# Date: 2019/06/25
# Exploit Author: m0ze
# Vendor Homepage: https://screets.com/
# Software Link: https://codecanyon.net/item/wordpress-live-chat-plugin/3952877
# Version: 2.8.3
# Tested on: Windows 10 / Parrot OS
# CVE : -


Info:

Weak security measures like bad input field data filtering has been
discovered in the «Live Chat Unlimited». Current version of this
premium WordPress plugin is 2.8.3.



PoC:

Go to the demo website https://site.com/try/lcx/night-bird/ and open chat window by clicking on «Open/close» link, then click on «Online mode» to go online. Use your payload inside input field and press [Enter]. 
Provided exaple payloads working on the admin area, so it's possible to steal admin cookies or force a redirect to any other
website.
Example #1: <!--<img src="--><img src=x onerror=(alert)(`m0ze`)//">m0ze
Example #2: <!--<img src="--><img src=x onerror=(alert)(document.cookie)//">m0ze
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import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/47037/?format=json')
                                                {"url": "https://www.nmmapper.com/api/exploitdetails/47037/?format=json", "download_file": "https://www.nmmapper.com/st/exploitdetails/47037/41442/wordpress-plugin-live-chat-unlimited-283-cross-site-scripting/download/", "exploit_id": "47037", "exploit_description": "\"WordPress Plugin Live Chat Unlimited  2.8.3 - Cross-Site Scripting\"", "exploit_date": "2019-06-25", "exploit_author": "m0ze", "exploit_type": "webapps", "exploit_platform": "php", "exploit_port": null}
                                            

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