OpenStack Cinder before 2014.1.5 (icehouse), 2014.2.x before 2014.2.4 (juno), and 2015.1.x before 2015.1.1 (kilo) allows remote authenticated users to read arbitrary files via a crafted qcow2 signature in an image to the upload-to-image command.
https://bugs.launchpad.net/cinder/+bug/1415087
http://www.ubuntu.com/usn/USN-2703-1
http://www.openwall.com/lists/oss-security/2015/06/17/7
http://www.openwall.com/lists/oss-security/2015/06/17/2
http://www.openwall.com/lists/oss-security/2015/06/13/1
http://www.debian.org/security/2015/dsa-3292
http://rhn.redhat.com/errata/RHSA-2015-1206.html
http://lists.openstack.org/pipermail/openstack-announce/2015-June/000367.html