CVE-2013-0270

OpenStack Keystone Grizzly before 2013.1, Folsom, and possibly earlier allows remote attackers to cause a denial of service (CPU and memory consumption) via a large HTTP request, as demonstrated by a long tenant_name when requesting a token.

CVE-2013-0282

OpenStack Keystone Grizzly before 2013.1, Folsom 2012.1.3 and earlier, and Essex does not properly check if the (1) user, (2) tenant, or (3) domain is enabled when using EC2-style authentication, which allows context-dependent attackers to bypass access restrictions.