Re: Dumping an Extension's Script

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr>
Cc: Andres Freund <andres(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Dumping an Extension's Script
Date: 2012-12-05 21:20:41
Message-ID: 12952.1354742441@sss.pgh.pa.us
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Dimitri Fontaine <dimitri(at)2ndQuadrant(dot)fr> writes:
>> On 2012-12-05 13:18:16 -0500, Tom Lane wrote:
>>> I think you're wasting your time to imagine that that case will ever be
>>> "fixed". Allowing the server to scribble on executable files would set
>>> off all kinds of security alarm bells, and rightly so. If Postgres ever
>>> did ship with such a thing, I rather imagine that I'd be required to
>>> patch it out of Red Hat releases (not that SELinux wouldn't prevent
>>> it from happening anyway).

> That part I did understand. I still can't be happy about it, but I won't
> get back with any proposal where that's put into questions. That said,
> while you're talking about it, what if it's an opt-in GUC?

GUC or no GUC, it'd still be letting an unprivileged network-exposed
application (PG) do something that's against any sane system-level
security policy. Lipstick is not gonna help this pig.

regards, tom lane

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