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Understanding the Compliance Operator

The Compliance Operator lets OpenShift Container Platform administrators describe the required compliance state of a cluster and provides them with an overview of gaps and ways to remediate them. The Compliance Operator assesses compliance of both the Kubernetes API resources of OpenShift Container Platform, as well as the nodes running the cluster. The Compliance Operator uses OpenSCAP, a NIST-certified tool, to scan and enforce security policies provided by the content.

The Compliance Operator is available for Red Hat Enterprise Linux CoreOS (RHCOS) deployments only.

Compliance Operator profiles

There are several profiles available as part of the Compliance Operator installation. You can use the oc get command to view available profiles, profile details, and specific rules.

  • View the available profiles:

    $ oc get -n openshift-compliance profiles.compliance
    Example output
    NAME                 AGE
ocp4-cis             94m
ocp4-cis-node        94m
ocp4-e8              94m
ocp4-high            94m
ocp4-high-node       94m
ocp4-moderate        94m
ocp4-moderate-node   94m
ocp4-nerc-cip        94m
ocp4-nerc-cip-node   94m
ocp4-pci-dss         94m
ocp4-pci-dss-node    94m
rhcos4-e8            94m
rhcos4-high          94m
rhcos4-moderate      94m
rhcos4-nerc-cip      94m

    These profiles represent different compliance benchmarks. Each profile has the product name that it applies to added as a prefix to the profile’s name. ocp4-e8 applies the Essential 8 benchmark to the OpenShift Container Platform product, while rhcos4-e8 applies the Essential 8 benchmark to the Red Hat Enterprise Linux CoreOS (RHCOS) product.

  • Run the following command to view the details of the rhcos4-e8 profile:

    $ oc get -n openshift-compliance -oyaml profiles.compliance rhcos4-e8
    Example output
    apiVersion: compliance.openshift.io/v1alpha1
description: 'This profile contains configuration checks for Red Hat Enterprise Linux
  CoreOS 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/acsc/view-all-content/publications/hardening-linux-workstations-and-servers'
id: xccdf_org.ssgproject.content_profile_e8
kind: Profile
metadata:
  annotations:
    compliance.openshift.io/image-digest: pb-rhcos4hrdkm
    compliance.openshift.io/product: redhat_enterprise_linux_coreos_4
    compliance.openshift.io/product-type: Node
  creationTimestamp: "2022-10-19T12:06:49Z"
  generation: 1
  labels:
    compliance.openshift.io/profile-bundle: rhcos4
  name: rhcos4-e8
  namespace: openshift-compliance
  ownerReferences:
  - apiVersion: compliance.openshift.io/v1alpha1
    blockOwnerDeletion: true
    controller: true
    kind: ProfileBundle
    name: rhcos4
    uid: 22350850-af4a-4f5c-9a42-5e7b68b82d7d
  resourceVersion: "43699"
  uid: 86353f70-28f7-40b4-bf0e-6289ec33675b
rules:
- rhcos4-accounts-no-uid-except-zero
- rhcos4-audit-rules-dac-modification-chmod
- rhcos4-audit-rules-dac-modification-chown
- rhcos4-audit-rules-execution-chcon
- rhcos4-audit-rules-execution-restorecon
- rhcos4-audit-rules-execution-semanage
- rhcos4-audit-rules-execution-setfiles
- rhcos4-audit-rules-execution-setsebool
- rhcos4-audit-rules-execution-seunshare
- rhcos4-audit-rules-kernel-module-loading-delete
- rhcos4-audit-rules-kernel-module-loading-finit
- rhcos4-audit-rules-kernel-module-loading-init
- rhcos4-audit-rules-login-events
- rhcos4-audit-rules-login-events-faillock
- rhcos4-audit-rules-login-events-lastlog
- rhcos4-audit-rules-login-events-tallylog
- rhcos4-audit-rules-networkconfig-modification
- rhcos4-audit-rules-sysadmin-actions
- rhcos4-audit-rules-time-adjtimex
- rhcos4-audit-rules-time-clock-settime
- rhcos4-audit-rules-time-settimeofday
- rhcos4-audit-rules-time-stime
- rhcos4-audit-rules-time-watch-localtime
- rhcos4-audit-rules-usergroup-modification
- rhcos4-auditd-data-retention-flush
- rhcos4-auditd-freq
- rhcos4-auditd-local-events
- rhcos4-auditd-log-format
- rhcos4-auditd-name-format
- rhcos4-auditd-write-logs
- rhcos4-configure-crypto-policy
- rhcos4-configure-ssh-crypto-policy
- rhcos4-no-empty-passwords
- rhcos4-selinux-policytype
- rhcos4-selinux-state
- rhcos4-service-auditd-enabled
- rhcos4-sshd-disable-empty-passwords
- rhcos4-sshd-disable-gssapi-auth
- rhcos4-sshd-disable-rhosts
- rhcos4-sshd-disable-root-login
- rhcos4-sshd-disable-user-known-hosts
- rhcos4-sshd-do-not-permit-user-env
- rhcos4-sshd-enable-strictmodes
- rhcos4-sshd-print-last-log
- rhcos4-sshd-set-loglevel-info
- rhcos4-sysctl-kernel-dmesg-restrict
- rhcos4-sysctl-kernel-kptr-restrict
- rhcos4-sysctl-kernel-randomize-va-space
- rhcos4-sysctl-kernel-unprivileged-bpf-disabled
- rhcos4-sysctl-kernel-yama-ptrace-scope
- rhcos4-sysctl-net-core-bpf-jit-harden
title: Australian Cyber Security Centre (ACSC) Essential Eight

  • Run the following command to view the details of the rhcos4-audit-rules-login-events rule:

    $ oc get -n openshift-compliance -oyaml rules rhcos4-audit-rules-login-events
    Example output
    apiVersion: compliance.openshift.io/v1alpha1
checkType: Node
description: |-
  The audit system already collects login information for all users and root. If the auditd daemon is configured to use the augenrules program to read audit rules during daemon startup (the default), add the following lines to a file with suffix.rules in the directory /etc/audit/rules.d in order to watch for attempted manual edits of files involved in storing logon events:

  -w /var/log/tallylog -p wa -k logins
  -w /var/run/faillock -p wa -k logins
  -w /var/log/lastlog -p wa -k logins

  If the auditd daemon is configured to use the auditctl utility to read audit rules during daemon startup, add the following lines to /etc/audit/audit.rules file in order to watch for unattempted manual edits of files involved in storing logon events:

  -w /var/log/tallylog -p wa -k logins
  -w /var/run/faillock -p wa -k logins
  -w /var/log/lastlog -p wa -k logins
id: xccdf_org.ssgproject.content_rule_audit_rules_login_events
kind: Rule
metadata:
  annotations:
    compliance.openshift.io/image-digest: pb-rhcos4hrdkm
    compliance.openshift.io/rule: audit-rules-login-events
    control.compliance.openshift.io/NIST-800-53: AU-2(d);AU-12(c);AC-6(9);CM-6(a)
    control.compliance.openshift.io/PCI-DSS: Req-10.2.3
    policies.open-cluster-management.io/controls: AU-2(d),AU-12(c),AC-6(9),CM-6(a),Req-10.2.3
    policies.open-cluster-management.io/standards: NIST-800-53,PCI-DSS
  creationTimestamp: "2022-10-19T12:07:08Z"
  generation: 1
  labels:
    compliance.openshift.io/profile-bundle: rhcos4
  name: rhcos4-audit-rules-login-events
  namespace: openshift-compliance
  ownerReferences:
  - apiVersion: compliance.openshift.io/v1alpha1
    blockOwnerDeletion: true
    controller: true
    kind: ProfileBundle
    name: rhcos4
    uid: 22350850-af4a-4f5c-9a42-5e7b68b82d7d
  resourceVersion: "44819"
  uid: 75872f1f-3c93-40ca-a69d-44e5438824a4
rationale: Manual editing of these files may indicate nefarious activity, such as
  an attacker attempting to remove evidence of an intrusion.
severity: medium
title: Record Attempts to Alter Logon and Logout Events
warning: Manual editing of these files may indicate nefarious activity, such as an
  attacker attempting to remove evidence of an intrusion.