RHCOS : OpenShift Container Platform 4.9.11 (RHSA-2021:5002)

high Nessus Plugin ID 312646

Synopsis

The remote Red Hat CoreOS host is missing a security update for OpenShift Container Platform 4.9.11.

Description

The remote Red Hat Enterprise Linux CoreOS host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:5002 advisory.

- haproxy: Incomplete fix for CVE-2021-39242 in OpenShift 4.9 (CVE-2021-4047)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHCOS OpenShift Container Platform 4.9.11 package based on the guidance in RHSA-2021:5002.

Plugin Details

Severity: High

ID: 312646

File Name: rhcos-RHSA-2021-5002.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/6/2026

Updated: 5/6/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-4047

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8:coreos, p-cpe:/a:redhat:enterprise_linux:haproxy

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 12/13/2021

Vulnerability Publication Date: 12/13/2021

Reference Information

CVE: CVE-2021-4047

CWE: 20

RHSA: 2021:5002

Detections

Analytics