#46829 - Let's Encrypt certificate store (le-certs) expired

Package	Source(s)		Maintainer(s)
guix		PTS Buildd Popcon

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From: Ludovic Courtès <ludo@gnu.org>
To: Leo Famulari <leo@famulari.name>
Subject: Re: bug#46829: `guix pull` uses incorrect certificate store
References: <871rd0ebd5.fsf@cbaines.net> <877dmrtbvn.fsf@gnu.org>
 <877dm54zk3.fsf@gnu.org> <YHNe5+taYSQI70dt@jasmine.lan>
 <YHOiXP0JJZZej+7H@jasmine.lan> <YHPrv2NdqqaLWh42@jasmine.lan>
Date: Tue, 13 Apr 2021 11:29:58 +0200
In-Reply-To: <YHPrv2NdqqaLWh42@jasmine.lan> (Leo Famulari's message of "Mon,
 12 Apr 2021 02:42:07 -0400")
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Hi,

Leo Famulari <leo@famulari.name> skribis:

> On Sun, Apr 11, 2021 at 09:29:00PM -0400, Leo Famulari wrote:
>> I checked and, although there have been some changes upstream at Let's
>> Encrypt [0], our le-certs still works for contacting Savannah with TLS.
>
> I checked wrong; le-certs needs to be updated. I'm testing the update
> now...

So I think the issue is that, when ‘nss-certs’ is not installed, ‘guix
pull’ uses the LE certs, but these certificates expire quite frequently,
whereas if you have ‘nss-certs’ installed, there’s “always” a valid
authentication chain from the roots.

Indeed, running ‘guix pull’ in the 1.2.0 live VM image works (it has
‘nss-certs’ installed in /etc/ssl/certs).  Likewise, a Guix System 1.2.0
installation that includes ‘nss-certs’ (which is the default) is
unaffected.

For those who do not have ‘nss-certs’ installed, a workaround is to do
avoid HTTPS:

  guix pull --url=http://git.savannah.gnu.org/git/guix.git

This is fine because the ‘guix’ channel is authenticated anyway.

We could also add a ‘--no-check-certificates’ option to ‘guix pull’.
For that, Guile-Git needs to implement
‘git_transport_certificate_check_cb’ & co.  I started doing that but
it’s a bit of work (wrapping ‘struct git_cert’ is cumbersome) so I’m
willing to punt on it for now.

Thoughts?

Ludo’.

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#46829 Let's Encrypt certificate store (le-certs) expired