Accepted postgresql-11 11.9-0+deb10u1 (source) into proposed-updates->stable-new, proposed-updates
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Hash: SHA256
Format: 1.8
Date: Thu, 13 Aug 2020 15:56:23 +0200
Source: postgresql-11
Architecture: source
Version: 11.9-0+deb10u1
Distribution: buster
Urgency: medium
Maintainer: Debian PostgreSQL Maintainers <team+postgresql@tracker.debian.org>
Changed-By: Christoph Berg <myon@debian.org>
Changes:
postgresql-11 (11.9-0+deb10u1) buster; urgency=medium
.
* New upstream version.
+ Set a secure search_path in logical replication walsenders and apply
workers (Noah Misch)
.
A malicious user of either the publisher or subscriber database could
potentially cause execution of arbitrary SQL code by the role running
replication, which is often a superuser. Some of the risks here are
equivalent to those described in CVE-2018-1058, and are mitigated in
this patch by ensuring that the replication sender and receiver execute
with empty search_path settings. (As with CVE-2018-1058, that change
might cause problems for under-qualified names used in replicated
tables' DDL.) Other risks are inherent in replicating objects that
belong to untrusted roles; the most we can do is document that there is
a hazard to consider. (CVE-2020-14349)
.
+ Make contrib modules' installation scripts more secure (Tom Lane)
.
Attacks similar to those described in CVE-2018-1058 could be carried out
against an extension installation script, if the attacker can create
objects in either the extension's target schema or the schema of some
prerequisite extension. Since extensions often require superuser
privilege to install, this can open a path to obtaining superuser
privilege. To mitigate this risk, be more careful about the search_path
used to run an installation script; disable check_function_bodies within
the script; and fix catalog-adjustment queries used in some contrib
modules to ensure they are secure. Also provide documentation to help
third-party extension authors make their installation scripts secure.
This is not a complete solution; extensions that depend on other
extensions can still be at risk if installed carelessly.
(CVE-2020-14350)
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