From: Laurenz Albe <laurenz.albe@cybertec.at>
To: 798604270@qq.com
To: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #18936: Trigger enable users to modify the tables which he doesn't have privilege
Date: Wed, 21 May 2025 08:17:53 +0200
Message-ID: <c842110a59d8c273c2edecc3510e2c3a4bca3d3c.camel@cybertec.at> (raw)
In-Reply-To: <18936-197af1cbbd49156f@postgresql.org>
References: <18936-197af1cbbd49156f@postgresql.org>
On Tue, 2025-05-20 at 13:07 +0000, PG Bug reporting form wrote:
> If an attacker gains privileges on a table, they can exploit triggers to
> modify or exfiltrate data from other tables, provided the trigger can be
> activated by either a superuser or a user with privileges on the target
> tables.
That's working as designed.
If a superuser performs a data modification on a table owned by an
untrustworthy user, it is "game over".
That is one of the reasons why you should use a superuser only for tasks
that require superuser privileges.
Yours,
Laurenz Albe
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To: pgsql-bugs@postgresql.org
Cc: laurenz.albe@cybertec.at, 798604270@qq.com, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #18936: Trigger enable users to modify the tables which he doesn't have privilege
In-Reply-To: <c842110a59d8c273c2edecc3510e2c3a4bca3d3c.camel@cybertec.at>
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