CVE-2014-3520

OpenStack Identity (Keystone) anterior a 2013.2.4, 2014.x anterior a 2014.1.2, y Juno anterior a Juno-2 permite a usuarios remotos autenticados en quien se confía ganar acceso a un proyecto no autorizado para el cual el elemento que establece la confianza tiene ciertos roles a través del identificador del proyecto en una solicitud de token de confianza de la API V2.

A flaw was found in the way keystone handled trusts. A trustee could use an out-of-scope project ID to gain unauthorized access to a project if the trustor had the required roles for that requested project.

The OpenStack Identity service authenticates and authorizes OpenStack users by keeping track of users and their permitted activities. The Identity service supports multiple forms of authentication, including user name and password credentials, token-based systems, and AWS-style logins. A flaw was found in keystone's chained delegation. A trustee able to create a delegation from a trust or an OAuth token could misuse identity impersonation to bypass the enforced scope, possibly allowing them to obtain elevated privileges to the trustor's projects and roles.