CVE-2023-5870

MEDIUM4.4EPSS 0.62%

Postgresql: role pg_signal_backend can signal certain superuser processes.

Published: 12/10/2023Modified: 11/19/2025

Also known as:ALPINE-CVE-2023-5870

Description

A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack.

Affected packages (6)

Alpine/postgresql14from 0, < 14.10-r0
Alpine/postgresql15from 0, < 15.5-r0
Alpine/postgresql16from 0, < 16.1-r0
Bitnami/postgresql>= 11.0.0, < 11.22.0, >= 12.0.0, < 12.17.0, >= 13.0.0, < 13.13.0, >= 14.0.0, < 14.10.0, >= 15.0.0, < 15.5.0, >= 16.0.0, < 16.0.1
Debian/postgresql-13from 0, < 13.13-0+deb11u1
Debian/postgresql-15from 0, < 15.5-0+deb12u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM4.4	CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Description

Affected packages (6)

CVSS scores

References (30)