The (1) EC2 and (2) OS APIs in OpenStack Compute (Nova) Folsom (2012.2), Essex (2012.1), and Diablo (2011.3) do not properly check the protocol when security groups are created and the network protocol is not specified entirely in lowercase, which allows remote attackers to bypass intended access restrictions.
secunia.com/advisories/46808
secunia.com/advisories/49439
www.ubuntu.com/usn/USN-1466-1
bugs.launchpad.net/nova/+bug/985184
exchange.xforce.ibmcloud.com/vulnerabilities/76110
github.com/openstack/nova/commit/9f9e9da777161426a6f8cb4314b78e09beac2978
github.com/openstack/nova/commit/ff06c7c885dc94ed7c828e8cdbb8b5d850a7e654
lists.launchpad.net/openstack/msg12883.html
review.openstack.org/#/c/8239/