CVE-2023-5870

2023-11-1500:00:00

ubuntu.com

postgresql

flaw

background workers

logical replication

denial of service

cve-2023-5870

CVSS3

4.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

AI Score

5.9

Confidence

Low

EPSS

0.001

Percentile

45.9%

JSON

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.

Notes

Author	Note
leosilva	PostgreSQL 9.3 is end of life upstream, and no updates are are available. Marking as deferred in -esm-main releases.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchpostgresql-10< 10.23-0ubuntu0.18.04.2+esm1UNKNOWN
ubuntu20.04noarchpostgresql-12< 12.17-0ubuntu0.20.04.1UNKNOWN
ubuntu22.04noarchpostgresql-14< 14.10-0ubuntu0.22.04.1UNKNOWN
ubuntu23.04noarchpostgresql-15< 15.5-0ubuntu0.23.04.1UNKNOWN
ubuntu23.10noarchpostgresql-15< 15.5-0ubuntu0.23.10.1UNKNOWN
ubuntu14.04noarchpostgresql-9.3< anyUNKNOWN
ubuntu16.04noarchpostgresql-9.5< 9.5.25-0ubuntu0.16.04.1+esm6UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	postgresql-10	< 10.23-0ubuntu0.18.04.2+esm1	UNKNOWN
ubuntu	20.04	noarch	postgresql-12	< 12.17-0ubuntu0.20.04.1	UNKNOWN
ubuntu	22.04	noarch	postgresql-14	< 14.10-0ubuntu0.22.04.1	UNKNOWN
ubuntu	23.04	noarch	postgresql-15	< 15.5-0ubuntu0.23.04.1	UNKNOWN
ubuntu	23.10	noarch	postgresql-15	< 15.5-0ubuntu0.23.10.1	UNKNOWN
ubuntu	14.04	noarch	postgresql-9.3	< any	UNKNOWN
ubuntu	16.04	noarch	postgresql-9.5	< 9.5.25-0ubuntu0.16.04.1+esm6	UNKNOWN