From: Jeff Davis <jdavis@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Re-validate connection string in libpqrcv_connect().
Date: Fri, 12 Jan 2024 21:43:12 +0000
Message-ID: <E1rOPJ2-00184d-Md@gemulon.postgresql.org> (raw)
Re-validate connection string in libpqrcv_connect().
A superuser may create a subscription with password_required=true, but
which uses a connection string without a password.
Previously, if the owner of such a subscription was changed to a
non-superuser, the non-superuser was able to utilize a password from
another source (like a password file or the PGPASSWORD environment
variable), which should not have been allowed.
This commit adds a step to re-validate the connection string before
connecting.
Reported-by: Jeff Davis
Author: Vignesh C
Reviewed-by: Peter Smith, Robert Haas, Amit Kapila
Discussion: https://www.postgresql.org/message-id/flat/e5892973ae2a80a1a3e0266806640dae3c428100.camel%40j-davis....
Backpatch-through: 16
Branch
------
REL_16_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/4c03ac7e2bc46988fe4ecf3b1aef393488786f12
Modified Files
--------------
doc/src/sgml/ref/create_subscription.sgml | 11 +--
.../libpqwalreceiver/libpqwalreceiver.c | 9 +++
src/test/subscription/t/027_nosuperuser.pl | 80 ++++++++++++++++++++++
3 files changed, 95 insertions(+), 5 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: jdavis@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Re-validate connection string in libpqrcv_connect().
In-Reply-To: <E1rOPJ2-00184d-Md@gemulon.postgresql.org>
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