Red Hat Security Advisory 2016-2117-01 – OpenStack’s File Share Service provides the means to easily provision shared file systems that can be consumed by multiple instances. These shared file systems are provisioned from pre-existing, back-end volumes. The UI component provides the dashboard plugin for the service. Security Fix: A cross-site scripting flaw was discovered in openstack-manila-ui’s Metadata field contained in its “Create Share” form. A user could inject malicious HTML/JavaScript code that would then be reflected in the “Shares” overview. Remote, authenticated, but unprivileged users could exploit this vulnerability to steal session cookies and escalate their privileges.