RHCOS 4 : OpenShift Container Platform 4.6.23 (RHSA-2021:0956)

high Nessus Plugin ID 312405

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Synopsis

The remote Red Hat CoreOS host is missing one or more security updates for OpenShift Container Platform 4.6.23.

Description

The remote Red Hat Enterprise Linux CoreOS 4 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:0956 advisory.

- golang: data race in certain net/http servers including ReverseProxy can lead to DoS (CVE-2020-15586)

- golang: ReadUvarint and ReadVarint can read an unlimited number of bytes from invalid inputs (CVE-2020-16845)

- golang: math/big: panic during recursive division of very large numbers (CVE-2020-28362)

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

Solution

Update the RHCOS OpenShift Container Platform 4.6.23 package based on the guidance in RHSA-2021:0956.

Plugin Details

Severity: High

ID: 312405

File Name: rhcos-RHSA-2021-0956.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/6/2026

Updated: 5/6/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-28362

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:N/A:H

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

Vulnerability Information

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

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: 3/30/2021

Vulnerability Publication Date: 7/17/2020

Reference Information

CVE: CVE-2020-15586, CVE-2020-16845, CVE-2020-28362

CWE: 295, 362, 835

RHSA: 2021:0956

Detections

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