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.Referenceshttps://launchpad.net/keystone/grizzly/2013.1https://github.com/openstack/keystone/commit/82c87e5638ebaf9f166a9b07a0155291276d6fdchttps://bugzilla.redhat.com/show_bug.cgi?id=909012https://github.com/openstack/keystone/commit/7691276b869a86c2b75631d5bede9f61e030d9d8https://bugs.launchpad.net/keystone/+bug/1099025http://rhn.redhat.com/errata/RHSA-2013-0708.html
