OpenStack Orchestration API (Heat) 2013.2 through 2013.2.3 and 2014.1, when creating the stack for a template using a provider template, allows remote authenticated users to obtain the provider template URL via the resource-type-list.
https://bugs.launchpad.net/heat/+bug/1311223
http://www.ubuntu.com/usn/USN-2249-1
http://www.securityfocus.com/bid/67505
http://www.openwall.com/lists/oss-security/2014/05/20/6