GNU bug report logs

#44808 Default to allowing password authentication on leaves users vulnerable

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Date: Thu, 11 Feb 2021 15:36:17 -0500
From: Leo Famulari <leo@famulari.name>
To: raid5atemyhomework via Bug reports for GNU Guix <bug-guix@gnu.org>
Subject: Re: bug#44808: Default to allowing password authentication on leaves
 users vulnerable
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On Thu, Feb 11, 2021 at 07:46:51AM +0000, raid5atemyhomework via Bug reports for GNU Guix wrote:
> Hi guix users,
> 
> It strikes me that a better course of action here would be, rather than providing a warning that might not be noticed by the user, to remove the default and force people to explicitly put `password-authentication? #t` or `password-authentication? #f`.

I like this idea.

> 
> That way if I have set up a headless server (possibly having a temporary keyboard/mouse/monitor during initial install, then forever logging in afterwards over intranet using my super secret password "raid5isnotagooddog"), with an existing `configuration.scm` that does not explicitly give the setting, I cannot accidentally lose access to my headless server by doing a random `guix pull && sudo guix system reconfigure configuration.scm` without noticing the warning.
> 
> Especially since there exists an `unattended-upgrades-service-type` which automates this `guix pull && sudo guix system reconfigure configuration.scm`, which makes changing this default ***VERY DANGEROUS*** in this use-case.  I'd rather I noticeably error out in this case.

I agree, changing the default will cause problems, and I'm not convinced
it's a serious problem that warrants changing anyways.




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