CVE-2017-7650

In Mosquitto before 1.4.12, pattern based ACLs can be bypassed by clients
that set their username/client id to ‘#’ or ‘+’. This allows locally or
remotely connected clients to access MQTT topics that they do have the
rights to. The same issue may be present in third party
authentication/access control plugins for Mosquitto.

Bugs

• <https://bugs.launchpad.net/ubuntu/+source/mosquitto/+bug/1692818&gt;