http://bugzilla.novell.com/show_bug.cgi?id=625552

http://bugzilla.novell.com/show_bug.cgi?id=625552#c0

Summary: openssh: inprove recommendation in "REMOTE HOST IDENTIFICATION HAS CHANGED" message Classification: openSUSE Product: openSUSE 11.3 Version: Final Platform: Other OS/Version: Other Status: NEW Severity: Minor Priority: P5 - None Component: Basesystem AssignedTo: anicka@novell.com ReportedBy: sbrabec@novell.com QAContact: qa@suse.de Found By: --- Blocker: ---

When remote host identification changes, following message appears:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that the RSA host key has just been changed. The fingerprint for the RSA key sent by the remote host is ................ Please contact your system administrator. Add correct host key in /home/sbrabec/.ssh/known_hosts to get rid of this message. Offending key in /home/sbrabec/.ssh/known_hosts:1 RSA host key for ben has changed and you have requested strict checking. Host key verification failed.

Following the message and opened known_hosts file, I found just an ASCII noise. Well, I tried to delete line 1 (guessing from the error message) and got this message:

The authenticity of host 'foo (...)' can't be established. RSA key fingerprint is ............ Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'foo' (RSA) to the list of known hosts. Warning: the RSA host key for foo' differs from the key for the IP address '...' Offending key for IP in /home/sbrabec/.ssh/known_hosts:1 Are you sure you want to continue connecting (yes/no)? yes

It would be nice to change the messsage and offer ssh-keygen -R or so.