1

To update OpenSSH in Ubuntu 18 LTS to version 8, I followed these steps: https://unix.stackexchange.com/a/598842/392505

I now see the desired version when I run ssh -V

OpenSSH_8.0p1, OpenSSL 1.1.1  11 Sep 2018

But if I run sshd -V I see the old version:

OpenSSH_7.6p1 Ubuntu-4ubuntu0.3, OpenSSL 1.0.2n  7 Dec 2017

Do I need to take some additional actions so I see the proper version when I check the version with sshd?

muru
  • 197,895
  • 55
  • 485
  • 740
arnoldbird
  • 198
  • Most users who seek to "upgrade" like that are worried about vulnerabilities and published CVEs. However, it's unnecessary: The Ubuntu Security Team patches CVEs without bumping to a higher version. You can manually upgrade components -- it's YOUR system. The point is merely that you don't NEED to in order to be safe and secure. – user535733 Mar 17 '21 at 02:37
  • Also, if you install from source, you have to keep an eye on bug fixes. But if you stay with the version that comes with your version of Ubuntu (as long as it's still supported), then you'll get these patches just by doing a periodic system upgrade. – Ray Mar 17 '21 at 04:52
  • What is your PATH? by default, the ./configure script uses PREFIX=/usr/local so whether you find the old or new version of the ssh client depends on the order of /usr/local/bin versus /usr/bin, whereas for sshd it will depend on the order of /usr/local/sbin versus /usr/sbin. Also make sure the "old" value is not hashed by your shell (ex. bash hash -r). – steeldriver Mar 17 '21 at 13:47
  • ... also note that if you have installed sshd in /usr/local/sbin then it may not affect your ssh service since the service file is likely hard-wired to use /usr/sbin/sshd – steeldriver Mar 17 '21 at 13:57
  • 'Most users who seek to "upgrade" like that'. Is there a non-manual way to upgrade OpenSSH to version 8 on Ubuntu 18? – arnoldbird Mar 17 '21 at 14:08

0 Answers0