Please enable SSH-1 protocol support

[Peter Meiser]

SSH-1 protocol support must be enabled explicitly. Please find attached a debdiff to enable it.

[Dimitri John Ledkov (xnox)]

As far as I know, ssh-1 protocol is vulnerable to arbitary injection of data into the encrypted traffic. Thus it will be highly insecure to enable that by default. This is same reason we disable weak hash algorithms and vulnerable old ssl/tls protocols in the web-browsers we ship. I think this bug will be marked as "won't fix". Subscribing ubuntu security team to make the call.

[Marc Deslauriers (mdeslaur)]

We're definitely not going to be turning on ssh-1. It is obsolete and contains design flaws which impact security.

Marking as Won't Fix.

[Peter Meiser (meiser79)]

Maybe, the reason for enabling SSH-1 is not clear.

There're still some SSH servers out there which use SSH-1 only. If it's not enabled in libssh, you can't connect to these servers with Remmina.

[Dimitri John Ledkov (xnox)]

It is clear, but enabled ssh-1 support in libssh will cause it to be enabled for _all_ servers/clients/apps that use libssh in the ubuntu archive. For that reason we will not do it.

If there such acient servers, either configure them to use ssh2 or any other alternative protocols.
You mention using Remmina, so I assume you are using RDP/VNC, well just let that through directly then.
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