Guide to the Secure Configuration of Red Hat OpenShift Container Platform 4

with profile Australian Cyber Security Centre (ACSC) Essential Eight
This profile contains configuration checks for Red Hat OpenShift Container Platform that align to the Australian Cyber Security Centre (ACSC) Essential Eight. A copy of the Essential Eight in Linux Environments guide can be found at the ACSC website: https://www.cyber.gov.au/publications/essential-eight-in-linux-environments
This guide presents a catalog of security-relevant configuration settings for Red Hat OpenShift Container Platform 4. It is a rendering of content structured in the eXtensible Configuration Checklist Description Format (XCCDF) in order to support security automation. The SCAP content is is available in the scap-security-guide package which is developed at https://www.open-scap.org/security-policies/scap-security-guide.

Providing system administrators with such guidance informs them how to securely configure systems under their control in a variety of network roles. Policy makers and baseline creators can use this catalog of settings, with its associated references to higher-level security control catalogs, in order to assist them in security baseline creation. This guide is a catalog, not a checklist, and satisfaction of every item is not likely to be possible or sensible in many operational scenarios. However, the XCCDF format enables granular selection and adjustment of settings, and their association with OVAL and OCIL content provides an automated checking capability. Transformations of this document, and its associated automated checking content, are capable of providing baselines that meet a diverse set of policy objectives. Some example XCCDF Profiles, which are selections of items that form checklists and can be used as baselines, are available with this guide. They can be processed, in an automated fashion, with tools that support the Security Content Automation Protocol (SCAP). The NIST National Checklist Program (NCP), which provides required settings for the United States Government, is one example of a baseline created from this guidance.
Do not attempt to implement any of the settings in this guide without first testing them in a non-operational environment. The creators of this guidance assume no responsibility whatsoever for its use by other parties, and makes no guarantees, expressed or implied, about its quality, reliability, or any other characteristic.

Profile Information

Profile TitleAustralian Cyber Security Centre (ACSC) Essential Eight
Profile IDxccdf_org.ssgproject.content_profile_e8

CPE Platforms

  • cpe:/a:redhat:openshift_container_platform:4.1

Revision History

Current version: 0.1.51

  • draft (as of 2020-07-20)

Table of Contents

  1. OpenShift Settings
    1. OpenShift - Registry Security Practices

Checklist

Group   Guide to the Secure Configuration of Red Hat OpenShift Container Platform 4   Group contains 2 groups and 2 rules
Group   OpenShift Settings   Group contains 1 group and 2 rules

[ref]   Each section of this configuration guide includes information about the default configuration of an OpenShift cluster and a set of recommendations for hardening the configuration. For each hardening recommendation, information on how to implement the control and/or how to verify or audit the control is provided. In some cases, remediation information is also provided. Many of the settings in the hardening guide are in place by default. The audit information for these settings is provided in order to verify that the cluster admininstrator has not made changes that would be less secure than the OpenShift defaults. A small number of items require configuration. Finally, there are some recommendations that require decisions by the system operator, such as audit log size, retention, and related settings.

Group   OpenShift - Registry Security Practices   Group contains 1 rule

[ref]   Contains evaluations for OpenShift registry security practices, and cluster-wide registry configuration.

Rule   Allowed registries for import are configured   [ref]

The configuration allowedRegistriesForImport limits the container image registries from which normal users may import images. This is important to control, as a user who can stand up a malicious registry can then import content which claims to include the SHAs of legimitate content layers.

Warning:  This rule's check operates on the cluster configuration dump. Therefore, you need to use a tool that can query the OCP API, retreive the /apis/config.openshift.io/v1/images/cluster API endpoint to the local /kubernetes-api-resources/apis/config.openshift.io/v1/images/cluster file.
Rationale:

Allowed registries for import should be specified to limit the registries from which users may import images.

Severity: 
medium
Rule ID:xccdf_org.ssgproject.content_rule_ocp_allowed_registries_for_import
Identifiers and References

Rule   The Identity Providers don't use the htpasswd-based authentication   [ref]

TBD

Warning:  This rule's check operates on the cluster configuration dump. Therefore, you need to use a tool that can query the OCP API, retreive the /apis/config.openshift.io/v1/oauths/cluster API endpoint to the local /kubernetes-api-resources/apis/config.openshift.io/v1/oauths/cluster file.
Rationale:

TBD

Severity: 
medium
Rule ID:xccdf_org.ssgproject.content_rule_ocp_idp_no_htpasswd
Identifiers and References

Identifiers:  CCE-84209-6

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