BugTraq
Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 04:50PM
Stephen Frost (sfrost snowman net) (2 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 09:03PM
Tom Lane (tgl sss pgh pa us) (1 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 09:23PM
Jim C. Nasby (decibel decibel org) (4 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 04:50PM
Joshua D. Drake (jd commandprompt com) (2 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 07:48PM
Lance James (lancej securescience net)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 06:05PM
Stephen Frost (sfrost snowman net)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encryptedpasswords Apr 21 2005 09:06AM
Tino Wildenhain (tino wildenhain de) (1 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted Apr 21 2005 01:32PM
Rod Taylor (pg rbt ca) (2 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted Apr 22 2005 03:33AM
Michael Samuel (michael miknet net)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted Apr 21 2005 01:47PM
Tino Wildenhain (tino wildenhain de)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 02:58AM
Jim Knoble (jmknoble pobox com) (1 replies)
RE: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 07:25PM
Mike Fratto (mfratto nwc com) (2 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 09:14PM
Jim Knoble (jmknoble pobox com)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 08:50PM
Stephen Frost (sfrost snowman net) (1 replies)
RE: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 09:14PM
Mike Fratto (mfratto nwc com) (1 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 09:33PM
Stephen Frost (sfrost snowman net) (1 replies)
RE: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 09:57PM
Mike Fratto (mfratto nwc com)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 10:03PM
Tom Lane (tgl sss pgh pa us) (3 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 02:27AM
Stephen Frost (sfrost snowman net) (1 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 10:27PM
Bruno Wolff III (bruno wolff to) (2 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encryptedpasswords Apr 22 2005 08:02PM
Antoine Martin (antoine nagafix co uk) (1 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted Apr 23 2005 01:02PM
Stephen Frost (sfrost snowman net) (1 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted Apr 23 2005 02:53PM
Antoine Martin (antoine nagafix co uk)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 22 2005 12:05AM
Stephen Frost (sfrost snowman net)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 10:10PM
Bruce Momjian (pgman candle pha pa us) (1 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 10:17PM
Tom Lane (tgl sss pgh pa us) (1 replies)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 21 2005 12:26AM
David F. Skoll (dfs roaringpenguin com)
Re: [HACKERS] Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 10:08PM
Jim C. Nasby (decibel decibel org)
Re: Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 07:36PM
David F. Skoll (dfs roaringpenguin com) (1 replies)
Re: Postgres: pg_hba.conf, md5, pg_shadow, encrypted passwords Apr 20 2005 07:44PM
Stephen Frost (sfrost snowman net)
* David F. Skoll (dfs (at) roaringpenguin (dot) com [email concealed]) wrote:
> Stephen Frost wrote:
> > The md5 hash which is generated for and stored in pg_shadow does not
> > use a random salt but instead uses the username which can generally be
> > determined ahead of time (especially for the 'postgres' superuser
> > account).
>
> I noted that this was a problem back in August, 2002:
>
> http://archives.postgresql.org/pgsql-admin/2002-08/msg00253.php
>
> Then, as now, the developers weren't very concerned.

I have some hopes that pointing out the rather large problem with the
md5 authentication mechanism in pg_hba.conf will lead them to discourage
it's use and thus reduce the occourances of the salt being made
available to the user giving more weight to the usefullness of having it
be a random salt. Additionally, it's been a few years, perhaps
viewpoints have changed.

Stephen

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