OpenStack Image Registry and Delivery Service (Glance) before 2013.2.4, 2014.x before 2014.1.3, and Juno before Juno-3, when using the V2 API, does not properly enforce the image_size_cap configuration option, which allows remote authenticated users to cause a denial of service (disk consumption) by uploading a large image.
https://bugs.launchpad.net/glance/+bug/1315321
http://www.ubuntu.com/usn/USN-2322-1
http://www.openwall.com/lists/oss-security/2014/08/21/6
http://secunia.com/advisories/60743
http://rhn.redhat.com/errata/RHSA-2014-1685.html