OpenStack Identity (Keystone) before 2014.1.1 does not properly handle when a role is assigned to a group that has the same ID as a user, which allows remote authenticated users to gain privileges that are assigned to a group with the same ID.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-0204
• https://bugs.launchpad.net/keystone/+bug/1309228
• http://www.openwall.com/lists/oss-security/2014/05/21/3
• openstack/keystone@729dcad
• openstack/keystone@786af98
• openstack/keystone@97dfd55
• openstack/keystone@f0eee2f
• https://review.openstack.org/#/c/94396