Using ssh with ConnectionAttempts set to zero results in the contents of uninitialised memory being sent to stdout.  For example:

$ ssh -o ConnectionAttempts=0 somehost
ssh: connect to host somehost port \200\335q\002\374\177: Success

Cause:

When ssh_connect_direct() is passed connection_attempts=0, the strport[] buffer is never initialised, since the whole attempt loop is skipped.  Its contents are later output in the error message after the skipped loop (sshconnect.c:485).