On Thu, 2018-09-27 at 11:18 -0400, Robert Moskowitz wrote:
On 9/25/18 1:27 AM, Adam Williamson wrote:
> Hey folks! Just a heads up, if anyone on F29 or Rawhide finds that
> suddenly ssh connections are failing, claiming the host key does not
> match and asking for a 'rsa-sha2-256' key: a mysterious hero known only
> as 'sedrubal' figured out that this is caused by a crypto-policies
> update, this one -
> you can get back to normal by downgrading back to this build:
> (for both F29 and Rawhide). We've got enough negative karma on the
> update now that it should be removed from updates-testing on the next
> push, but some folks will have got the update already. I'll ask tmraz
> if he can either fix it promptly or revert it temporarily, for Rawhide
> Sorry for the trouble!
You mean like this I am getting in my ssh started vncserver that I
worked so hard on yesterday?
# systemctl -l --no-pager status vncserver@:1
● vncserver@:1.service - Remote desktop service (VNC)
Loaded: loaded (/etc/systemd/system/vncserver@:1.service; enabled;
vendor preset: disabled)
Active: failed (Result: exit-code) since Fri 2018-06-22 11:12:54
EDT; 3 months 5 days ago
Process: 682 ExecStart=/bin/sh -c /usr/bin/ssh -i .ssh/id_rsa_vnchack
localhost /usr/bin/vncserver -fg :1 (code=exited, status=255)
Process: 655 ExecStartPre=/bin/sh -c /usr/bin/ssh -i
.ssh/id_rsa_vnchack localhost /usr/bin/vncserver -kill :1 > /dev/null
2>&1 || : (code=exited, status=0/SUCCESS)
Main PID: 682 (code=exited, status=255)
Jun 22 11:12:54 localhost sh: It is also possible that a host key
has just been changed.
Jun 22 11:12:54 localhost sh: The fingerprint for the RSA key sent
by the remote host is
Jun 22 11:12:54 localhost sh:
Jun 22 11:12:54 localhost sh: Please contact your system administrator.
Jun 22 11:12:54 localhost sh: Add correct host key in
/home/rgm/.ssh/known_hosts to get rid of this message.
Jun 22 11:12:54 localhost sh: Offending ECDSA key in
Jun 22 11:12:54 localhost sh: RSA host key for localhost has
changed and you have requested strict checking.
Jun 22 11:12:54 localhost sh: Host key verification failed.
Jun 22 11:12:54 localhost systemd: vncserver@:1.service: Main process
exited, code=exited, status=255/n/a
Jun 22 11:12:54 localhost systemd: vncserver@:1.service: Failed with
Yup, looks like the same problem.
I see I upgraded openssh yesterday evening:
And now I got: openssh-server-7.8p1-3.fc29.armv7hl
and I could start vncserver via ssh.
It would actually be an update to crypto-policies that fixed it, not
thanks for identifying the problem and getting it fixed so promptly.
Thanks, but I can't take the credit: that goes to sedrubal (who first
pointed it out in the update) and mcatanzaro (who pinged me about it)
Fedora QA Community Monkey
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