RHCOS 3 : OpenShift Container Platform 3.11.394 (RHSA-2021:0637)

high Nessus Plugin ID 312427

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Synopsis

The remote Red Hat CoreOS host is missing one or more security updates for OpenShift Container Platform 3.11.394.

Description

The remote Red Hat Enterprise Linux CoreOS 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0637 advisory.

- ant: insecure temporary file vulnerability (CVE-2020-1945)

- jenkins-2-plugins/subversion: XML parser is not preventing XML external entity (XXE) attacks (CVE-2020-2304)

- jenkins-2-plugins/mercurial: XML parser is not preventing XML external entity (XXE) attacks (CVE-2020-2305)

- jenkins-2-plugins/mercurial: Missing permission check in an HTTP endpoint could result in information disclosure (CVE-2020-2306)

- jenkins-2-plugins/kubernetes: Jenkins controller environment variables are accessible in Kubernetes Plugin (CVE-2020-2307)

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 3.11.394 package based on the guidance in RHSA-2021:0637.

Plugin Details

Severity: High

ID: 312427

File Name: rhcos-RHSA-2021-0637.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: Medium

Score: 6.0

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.7

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

CVSS Score Source: CVE-2021-21605

CVSS v3

Risk Factor: High

Base Score: 8

Temporal Score: 7.2

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

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

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2020-25658

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:jenkins, p-cpe:/a:redhat:enterprise_linux:jenkins-2-plugins, p-cpe:/a:redhat:enterprise_linux:python2-rsa, cpe:/o:redhat:enterprise_linux:7:coreos, p-cpe:/a:redhat:enterprise_linux:python-rsa

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/3/2021

Vulnerability Publication Date: 5/14/2020

Reference Information

CVE: CVE-2020-11979, CVE-2020-1945, CVE-2020-2304, CVE-2020-2305, CVE-2020-2306, CVE-2020-2307, CVE-2020-2308, CVE-2020-2309, CVE-2020-25658, CVE-2021-21602, CVE-2021-21603, CVE-2021-21604, CVE-2021-21605, CVE-2021-21606, CVE-2021-21607, CVE-2021-21608, CVE-2021-21609, CVE-2021-21610, CVE-2021-21611

CWE: 20, 200, 377, 385, 502, 59, 611, 770, 79, 862, 863

RHSA: 2021:0637

Detections

Analytics