The v1 API in OpenStack Glance Essex (2012.1), Folsom (2012.2), and Grizzly, when using the single-tenant Swift or S3 store, reports the location field, which allows remote authenticated users to obtain the operator's backend credentials via a request for a cached image.
https://review.openstack.org/#/c/24439/
https://review.openstack.org/#/c/24438/
https://review.openstack.org/#/c/24437/
https://exchange.xforce.ibmcloud.com/vulnerabilities/82878
https://bugs.launchpad.net/glance/+bug/1135541
http://www.ubuntu.com/usn/USN-1764-1
http://www.securityfocus.com/bid/58490
http://www.openwall.com/lists/oss-security/2013/03/14/15
http://secunia.com/advisories/52565