From: ftpmaster@ftp-master.debian.org
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Format: 1.8
Date: Wed, 13 Aug 2025 13:03:55 +0200
Source: postgresql-17
Architecture: source
Version: 17.6-0+deb13u1
Distribution: trixie
Urgency: medium
Maintainer: Debian PostgreSQL Maintainers
Changed-By: Christoph Berg
Closes: 1107984
Changes:
postgresql-17 (17.6-0+deb13u1) trixie; urgency=medium
.
* New upstream version 17.6.
.
+ Tighten security checks in planner estimation functions (Dean Rasheed)
.
The fix for CVE-2017-7484, plus followup fixes, intended to prevent
leaky functions from being applied to statistics data for columns that
the calling user does not have permission to read. Two gaps in that
protection have been found. One gap applies to partitioning and
inheritance hierarchies where RLS policies on the tables should restrict
access to statistics data, but did not.
.
The other gap applies to cases where the query accesses a table via a
view, and the view owner has permissions to read the underlying table
but the calling user does not have permissions on the view. The view
owner's permissions satisfied the security checks, and the leaky
function would get applied to the underlying table's statistics before
we check the calling user's permissions on the view. This has been
fixed by making security checks on views occur at the start of planning.
That might cause permissions failures to occur earlier than before.
.
The PostgreSQL Project thanks Dean Rasheed for reporting this problem.
(CVE-2025-8713)
.
+ Prevent pg_dump scripts from being used to attack the user running the
restore (Nathan Bossart)
.
Since dump/restore operations typically involve running SQL commands as
superuser, the target database installation must trust the source
server. However, it does not follow that the operating system user who
executes psql to perform the restore should have to trust the source
server. The risk here is that an attacker who has gained
superuser-level control over the source server might be able to cause it
to emit text that would be interpreted as psql meta-commands. That would
provide shell-level access to the restoring user's own account,
independently of access to the target database.
.
To provide a positive guarantee that this can't happen, extend psql with
a \restrict command that prevents execution of further meta-commands,
and teach pg_dump to issue that before any data coming from the source
server.
.
The PostgreSQL Project thanks Martin Rakhmanov, Matthieu Denais, and
RyotaK for reporting this problem. (CVE-2025-8714)
.
+ Convert newlines to spaces in names included in comments in pg_dump
output (Noah Misch)
.
Object names containing newlines offered the ability to inject arbitrary
SQL commands into the output script. (Without the preceding fix,
injection of psql meta-commands would also be possible this way.)
CVE-2012-0868 fixed this class of problem at the time, but later work
reintroduced several cases.
.
The PostgreSQL Project thanks Noah Misch for reporting this problem.
(CVE-2025-8715)
.
* Add Turkish debconf translation by Atila KOÇ, thanks! (Closes: #1107984)
* Drop hurd-iovec patch, implemented upstream.
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