Ubuntu Security Notice 2002-1 - Chmouel Boudjnah discovered that Keystone did not properly invalidate user tokens when a tenant was disabled which allowed an authenticated user to retain access via the token. Kieran Spear discovered that Keystone did not properly verify PKI tokens when performing revocation when using the memcache and KVS backends. An authenticated attacker could exploit this to bypass intended access restrictions. Various other issues were also addressed.
f6c7d78a98e19bff9d96af24e8f2c061c076b9f02b37bf3bb46129464f18077fRed Hat Security Advisory 2013-1285-01 - The openstack-keystone packages provide Keystone, a Python implementation of the OpenStack identity service API, which provides Identity, Token, Catalog, and Policy services. It was found that Keystone did not correctly handle revoked PKI tokens, allowing users with revoked tokens to retain access to resources they should no longer be able to access. This issue only affected systems using PKI tokens with the memcache or KVS token back ends.
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