CVE-2013-2104

python-keystoneclient anterior a la versión 0.2.4, tal como se usa en OpenStack Keystone (Folsom), no comprueba adecuadamente la expiración de tokens PKI, lo que permite a usuarios autenticados (1) conservar la utilización de un token después de su expiración, o (2) usar un token revocado una vez expira.

Eoghan Glynn and Alex Meade discovered that Keystone did not properly perform expiry checks for the PKI tokens used in Keystone. If Keystone were setup to use PKI tokens, a previously authenticated user could continue to use a PKI token for longer than intended. This issue only affected Ubuntu 12.10 which does not use PKI tokens by default. Jose Castro Leon discovered that Keystone did not properly authenticate users when using the LDAP backend. An attacker could obtain valid tokens and impersonate other users by supplying an empty password. By default, Ubuntu does not use the LDAP backend. Various other issues were also addressed.