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From: Jeff Davis <pgsql@j-davis.com>
To: Robert Haas <robertmhaas@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Noah Misch <noah@leadboat.com>
Cc: pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Fix search_path to a safe value during maintenance operations.
Date: Mon, 19 Jun 2023 15:58:55 -0700
Message-ID: <578fb4be80247570e6a05924908765a0b345971e.camel@j-davis.com> (raw)
In-Reply-To: <CA+TgmoYtJU0KknWr11W--wK=4eJtdHOgupyT=beZVPC8P=o+YA@mail.gmail.com>
References: <E1q7j7Y-000z1H-Hr@gemulon.postgresql.org>
	<89a415b86d5421941e4281ba5bf6288934078624.camel@j-davis.com>
	<d20864b929ff769a0ebf772359719f05bb6982cd.camel@j-davis.com>
	<573014.1686375211@sss.pgh.pa.us>
	<20230612170510.GA201972@gust.leadboat.com>
	<f53df2dbe11bb42764bcdd003a54aa29c9bb6137.camel@j-davis.com>
	<20230613182920.GA259321@gust.leadboat.com>
	<1799839.1686687804@sss.pgh.pa.us>
	<4df537f5a0d8c0ceac3eec3809d1144880b8e76d.camel@j-davis.com>
	<CA+TgmoYtJU0KknWr11W--wK=4eJtdHOgupyT=beZVPC8P=o+YA@mail.gmail.com>

On Mon, 2023-06-19 at 16:03 -0400, Robert Haas wrote:
> I'm inclined to think that this is a real security issue and am not

Can you expand on that a bit? You mean a practical security issue for
the intended use cases?

> very sanguine about waiting another year to fix it, but at the same
> time, I'm somewhat worried that the proposed fix might be too narrow
> or wrongly-shaped. I'm not too convinced that we've properly
> understood what all of the problems in this area are. :-(

Would it be acceptable to document that the MAINTAIN privilege (along
with TRIGGER and, if I understand correctly, REFERENCES) carries
privilege escalation risk for the grantor?

Regards,
	Jeff Davis






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