From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | Joe Conway <mail(at)joeconway(dot)com> |
Cc: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Robert Haas <robertmhaas(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: scram and \password |
Date: | 2017-03-14 15:40:16 |
Message-ID: | 6425.1489506016@sss.pgh.pa.us |
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Joe Conway <mail(at)joeconway(dot)com> writes:
> On 03/14/2017 03:15 AM, Heikki Linnakangas wrote:
>> If the server isn't set up to do SCRAM authentication, i.e. there are no
>> "scram" entries in pg_hba.conf, and you set yourself a SCRAM verifier,
>> you have just locked yourself out of the system. I think that's a
>> non-starter. There needs to be some more intelligence in the decision.
> Yes, this was exactly my concern.
This seems like a serious usability fail.
>> It would be a lot more sensible, if there was a way to specify in
>> pg_hba.conf, "scram-or-md5". We punted on that for PostgreSQL 10, but
>> perhaps we should try to cram that in, after all.
> I was also thinking about that. Basically a primary method and a
> fallback. If that were the case, a gradual transition could happen, and
> if we want \password to enforce best practice it would be ok.
Why exactly would anyone want "md5 only"? I should think that "scram
only" is a sensible pg_hba setting, if the DBA feels that md5 is too
insecure, but I do not see the point of "md5 only" in 2017. I think
we should just start interpreting that as "md5 or better".
regards, tom lane
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