From: Julien Lepiller <julien@lepiller.eu>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: guix-devel@gnu.org
Subject: Re: Renewing certificates with certbot
Date: Wed, 06 Mar 2019 14:51:39 +0100 [thread overview]
Message-ID: <2af1bc4240159d48ec7883b8c2fac590@lepiller.eu> (raw)
In-Reply-To: <87fts0i0ga.fsf@gnu.org>
Le 2019-03-06 14:42, Ludovic Courtès a écrit :
> Hi,
>
> Julien Lepiller <julien@lepiller.eu> skribis:
>
>> I use certificates from let's encrypt for my website and mail servers,
>> and found that there was an issue with certificates generated by the
>> certbot service in Guix: the generated private keys are world-readable
>> (in a directory that cannot be accessed by anyone but root, so it's OK
>> I guess). OpenSMTPD is not happy with that though, so I have to chmod
>> the files every time. I came up with a variant of the deploy-hook
>> that's presented in the manual, and I'd like to update the example
>> with it. Here it is:
>>
>> ;; Find running nginx and reload its configuration (for certificates)
>> (define %my-deploy-hook
>> (program-file
>> "my-deploy-hook"
>> #~(let* ((pid (call-with-input-file "/var/run/nginx/pid" read))
>> (cert-dir (getenv "RENEWED_LINEAGE"))
>> (privkey (string-append cert-dir "/privkey.pem")))
>> ;; certbot private keys are world-readable by default, and
>> smtpd complains
>> ;; about that, refusing to start otherwise
>> (chmod privkey #o600)
>> (kill pid SIGHUP))))
>>
>> What do you think?
>
> It sounds like a serious issue that private keys are world-readable.
> Is
> it a bug on our side or in Certbot? I think we should fix it so that
> they are never world-readable, rather than document how to work around
> the bug.
>
> WDYT?
>
> Thanks,
> Ludo’.
I don't think this is an issue: the file is world-readable, but the
directory
it's in is not accessible to anyone but root. OpenSMTPD still complains,
but I think there's no security issue.
next prev parent reply other threads:[~2019-03-06 13:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-22 13:49 Renewing certificates with certbot Julien Lepiller
2019-02-22 17:57 ` swedebugia
2019-03-06 13:42 ` Ludovic Courtès
2019-03-06 13:51 ` Julien Lepiller [this message]
2019-03-06 14:12 ` Giovanni Biscuolo
2019-03-06 14:19 ` ng0
2019-03-06 14:33 ` Julien Lepiller
2019-03-06 16:26 ` ng0
2019-03-22 8:00 ` Chris Marusich
-- strict thread matches above, loose matches on Subject: below --
2019-03-22 10:55 Clément Lassieur
2019-03-23 1:08 ` Chris Marusich
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