May 2008

Upgrade from Gutsy to Hardy

I have admittedly put it off for way too long. The recent OpenSSL Vulnerability with weak keys prompted me to change that on one of my systems. I was forced to use dist-upgrade when OpenSSL would not update, leaving me to continuously recreating weak keys. While I normally update packages using the command line, I was hesitant of using the GUI for Adept Manager. My previous attempts with dist-upgrade have all been failures (From Edgy to Feisty to Gutsy…) so I was not really expecting a smoothe transition.  I used the GUI Adept Manager because it was the recommended method per the Kubuntu Hardy Heron upgrade documentation. Adept immediately gave me an error and closed the first time I tried. I rebooted and tried again with the same error. I kept trying, and it finally decided it would do it…and it did it well. I rebooted and I was almost unable to tell any difference. I did notice I had the new wallpaper available, but otherwise, OpenSSL let me create new, uncompromised keys… and that was what was important to me. It was so painless, I felt brave and tried it on another server. This time, no error message, and it upgraded just as easily. I still have one workstation remaining on Gutsy, a laptop that I don’t have any pressing need to update. The slow server took about two hours to update, and the faster one took about one hour.

Adept Manager
Edgy Eft
Feisty Fawn
Gutsy Gibbon
Hardy Heron
Kubuntu
OpenSSH
Server

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The OpenSSL Vulnerability

I recently established my network to use SSH connections. My three Ubuntu systems I discovered were using weak keys that had been generated using the flawed packages. If you haven’t been paying attention, Canonical issued USN-612-1 on 5/13/2008. If you’re using keys that have been generated since September 2006, it’s likely that you need to regenerate all keys. If you have any doubts, I encourage you to regenerate all keys. It will affect any key used that was generated on a compromised system. The biggest trouble for me was getting OpenSSL and OpenSSH-server packages to update. I used the ssh-copy-id command to make it the process easy for me.

Canonical
Debian
OpenSSH
SSH
Security

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