A privilege escalation flaw was found in the token exchange feature of keycloak. Missing authorization allows a client application holding a valid access token to exchange tokens for any target client by passing the client_id of the target. This could allow a client to gain unauthorized access to additional services.
Se ha encontrado un fallo de escalada de privilegios en la funcionalidad token exchange de keycloak. Una falta de autorización permite que una aplicación cliente que tenga un token de acceso válido pueda intercambiar tokens para cualquier cliente de destino pasando el client_id del mismo. Esto podría permitir a un cliente conseguir acceso no autorizado a servicios adicionales
Red Hat Single Sign-On 7.5 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. This release of Red Hat Single Sign-On 7.5.2 on RHEL 7 serves as a security patch for Red Hat Single Sign-On 7.5.2, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include a privilege escalation vulnerability.
