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Usernoise 3.7.8 WP plugin cross-site scripting vulnerability
- To: bugtraq@xxxxxxxxxxxxxxxxx
- Subject: Usernoise 3.7.8 WP plugin cross-site scripting vulnerability
- From: roguecoder@xxxxxxxx
- Date: Mon, 5 Aug 2013 19:43:28 GMT
Details
=============================
Application: Usernoise ( http://usernoise.karevn.com/ )
Version: 3.7.8 (probably earlier versions as well)
Type: Wordpress plugin
Developer: Nikolay Karev ( http://karevn.com/ -
http://profiles.wordpress.org/karevn/)
Vulnerability: Unauthorized persistent cross-site scripting
Description
=================
Usernoise is a "just works" modal contact / feedback form. It became responsive
starting from 3.5 release. You will not need to change even a line of code in
your site.
Vulnerability
=================
The summary field is vulnerable to persistent cross site scripting, and the
affected area is the Wordpress admin dashboard. The reason why this
vulnerability exists is because the user input is not being properly handled
when a feedback is submitted. It accepts any type of arbitrary code, including
JavaScript, and when the content is displayed in the feedback section in the
dashboard, all JavaScript code is executed causing a sever vulnerability with
administrators as the target.
Proof of Concept
=================
<script>document.documentElement.innerHTML='RogueCoder was here';</script>
Well done! Website looks great<script>console.log('RogueCoder was
here');</script>
Solution
=================
Upgrade to plugin version 3.7.9
Timeline
=================
2013-07-15 - Informed developer through plugin section on wordpress.org
2013-07-16 - Informed developer through email
2013-07-17 - Fix released