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Linux Distros Unpatched Vulnerability : CVE-2023-5870

medium Nessus Plugin ID 253281

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - 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. (CVE-2023-5870)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2023-5870

https://ubuntu.com/security/CVE-2023-5870

Plugin Details

Severity: Medium

ID: 253281

File Name: unpatched_CVE_2023_5870.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 8/21/2025

Updated: 9/1/2025

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2023-5870

CVSS v3

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.9

Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:postgresql-test, p-cpe:/a:centos:centos:postgresql, p-cpe:/a:redhat:enterprise_linux:postgresql-static, p-cpe:/a:centos:centos:postgresql-plpython, p-cpe:/a:redhat:enterprise_linux:postgresql-devel, p-cpe:/a:centos:centos:postgresql-upgrade, p-cpe:/a:centos:centos:postgresql-docs, p-cpe:/a:redhat:enterprise_linux:postgresql-plperl, p-cpe:/a:centos:centos:postgresql-pltcl, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:postgresql-server, p-cpe:/a:redhat:enterprise_linux:postgresql-pltcl, p-cpe:/a:centos:centos:postgresql-plperl, p-cpe:/a:redhat:enterprise_linux:postgresql-upgrade, p-cpe:/a:redhat:enterprise_linux:postgresql-server, p-cpe:/a:centos:centos:postgresql-devel, p-cpe:/a:canonical:ubuntu_linux:postgresql-9.3, cpe:/o:redhat:enterprise_linux:8, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:redhat:enterprise_linux:postgresql-contrib, p-cpe:/a:redhat:enterprise_linux:postgresql-plpython, p-cpe:/a:redhat:enterprise_linux:postgresql-libs, p-cpe:/a:centos:centos:postgresql-test, p-cpe:/a:centos:centos:postgresql-static, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:postgresql-contrib, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:postgresql-docs, p-cpe:/a:centos:centos:postgresql-libs, p-cpe:/a:redhat:enterprise_linux:postgresql

Required KB Items: Host/cpu, Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 11/9/2023

Reference Information

CVE: CVE-2023-5870