full-disclosure - Usernoise 3.7.8 WP plugin cross-site scripting vulnerability

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Date: Mon, 05 Aug 2013 21:38:04 +0200
From: "Adéla Goldová" <roguecoder@...h.com>
To: full-disclosure@...ts.grok.org.uk
Subject: Usernoise 3.7.8 WP plugin cross-site scripting
	vulnerability

Details=============================Application: Usernoise (
http://usernoise.karevn.com/ )Version: 3.7.8 (probably earlier
versions as well)Type: Wordpress pluginDeveloper: 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=================document.documentElement.innerHTML='RogueCoder
was here';Well done! Website looks greatconsole.log('RogueCoder was
here');
Solution=================Upgrade to plugin version 3.7.9
Timeline=================2013-07-15 - Informed developer through
plugin section on wordpress.org2013-07-16 - Informed developer through
email2013-07-17 - Fix released
Content of type "text/html" skipped

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