Red Hat Security Advisory 2016-1378-01 – OpenStack Bare Metal is a tool used to provision bare metal machines. It leverages common technologies such as PXE boot and IPMI to cover a wide range of hardware. It also supports pluggable drivers to allow added, vendor-specific functionality. Security Fix: An authentication vulnerability was found in openstack-ironic. A client with network access to the ironic-api service could bypass OpenStack Identity authentication, and retrieve all information about any node registered with OpenStack Bare Metal. If an unprivileged attacker knew the MAC address of a network card belonging to a node, the flaw could be exploited by sending a crafted POST request to the node’s /v1/drivers/$DRIVER_NAME/vendor_passthru resource. The response included the node’s full details, including management passwords, even if the /etc/ironic/policy.json file was configured to hide passwords in API responses.