This is a (bad) joke.

> A remote attacker with valid credentials can execute arbitrary commands on a server running an SSH service. The commands run on the target with the privileges of the authenticated account, and their output is returned to the attacker.

If you read carefully, there's a tonne of give aways.. like a tonne. If people still haven't picked it up by the end, the very last faq actually explains it a bit more explicitly. But at first glance, works about as good as a strong coffee