keystone: multiple vulnerabilities

Dolph Mathews discovered that OpenStack Keystone did not properly restrict to administrative users the ability to update users' tenants. A remote attacker that can reach the administrative API can use this to add any user to any tenant. (CVE-2012-3542)

Derek Higgins discovered that OpenStack Keystone did not properly implement token expiration. A remote attacker could use this to continue to access an account that has been disabled or has a changed password. (CVE-2012-3426)