kube-bench/cfg/ocp-3.10/master.yaml

---
controls:
version: 3.10
id: 1
text: "Securing the OpenShift Master"
type: "master"
groups:

- id: 1
  text: "Protecting the API Server"
  checks:
  - id: 1.1
    text: "Maintain default behavior for anonymous access"
    type: "skip"
    scored: true

  - id: 1.2
    text: "Verify that the basic-auth-file method is not enabled"
    audit: "grep -A2 basic-auth-file /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "--basic-auth-file"
        compare:
          op: eq
          value: ""
        set: false
    remediation: |
      Edit the kubernetes master config file /etc/origin/master/master-config.yaml and
      remove the basic-auth-file entry.

      kubernetesMasterConfig:
        apiServerArguments:
           basic-auth-file:
             - /path/to/any/file      
    scored: true

  - id: 1.3
    text: "Insecure Tokens"
    type: "skip"
    scored: true

  - id: 1.4
    text: "Secure communications between the API server and master nodes"
    audit: "grep -A4 kubeletClientInfo /etc/origin/master/master-config.yaml"
    tests:
      bin_op: and
      test_items:
      - flag: "kubeletClientInfo:"
        compare:
          op: eq
          value: "kubeletClientInfo:"
        set: true
      - flag: "ca: ca-bundle.crt"
        compare:
          op: has
          value: "ca-bundle.crt"
        set: true
      - flag: "certFile: master.kubelet-client.crt"
        compare:
          op: has
          value: "master.kubelet-client.crt"
        set: true
      - flag: "keyFile: master.kubelet-client.key"
        compare:
          op: has
          value: "master.kubelet-client.key"
        set: true
      - flag: "port: 10250"
        compare:
          op: eq
          value: "port: 10250"
        set: true
    remediation: |
      Edit the kubernetes master config file /etc/origin/master/master-config.yaml
      and change it to match the below.

      kubeletClientInfo:
        ca: ca-bundle.crt
        certFile: master.kubelet-client.crt
        keyFile: master.kubelet-client.key
        port: 10250      
    scored: true

  - id: 1.5
    text: "Prevent insecure bindings"
    audit: "grep -A2 insecure-bind-address /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "insecure-bind-address"
        set: false
    remediation: |
      Edit the kubernetes master config file /etc/origin/master/master-config.yaml
      and remove the insecure-bind-address entry.

      kubernetesMasterConfig:
        apiServerArguments:
           insecure-bind-address:
           - 127.0.0.1      
    scored: true

  - id: 1.6
    text: "Prevent insecure port access"
    audit: "grep -A2 insecure-port /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "insecure-port"
        set: false
    remediation: |
     Edit the kubernetes master config file /etc/origin/master/master-config.yaml
     and remove the insecure-port entry.

     kubernetesMasterConfig:
       apiServerArguments:
         insecure-port:
         - 0     
    scored: true

  - id: 1.7
    text: "Use Secure Ports for API Server Traffic"
    audit: "grep -A2 secure-port /etc/origin/master/master-config.yaml"
    tests:
      bin_op: or
      test_items:
      - flag: "secure-port"
        set: false
      - flag: "secure-port"
        compare:
          op: nothave
          value: "0"
        set: true
    remediation: |
     Edit the kubernetes master config file /etc/origin/master/master-config.yaml
     and either remove the secure-port parameter or set it to a different (non-zero)
     desired port.

     kubernetesMasterConfig:
       apiServerArguments:
         secure-port:
         - 8443     
    scored: true

  - id: 1.8
    text: "Do not expose API server profiling data"
    type: "skip"
    scored: true

  - id: 1.9
    text: "Verify repair-malformed-updates argument for API compatibility"
    audit: "grep -A2 repair-malformed-updates /etc/origin/master/master-config.yaml"
    tests:
      bin_op: or
      test_items:
      - flag: "repair-malformed-updates"
        set: false
      - flag: "repair-malformed-updates"
        compare:
          op: has
          value: "true"
        set: true
    remediation: |
     Edit the kubernetes master config file /etc/origin/master/master-config.yaml
     and remove the repair-malformed-updates entry or set repair-malformed-updates=true.     
    scored: true

  - id: 1.10
    text: "Verify that the AlwaysAdmit admission controller is disabled"
    audit: "grep -A4 AlwaysAdmit /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "AlwaysAdmit"
        set: false
    remediation: |
      Edit the kubernetes master config file /etc/origin/master/master-config.yaml
      and remove the the entry below.

      AlwaysAdmit:
        configuration:
          kind: DefaultAdmissionConfig
          apiVersion: v1
          disable: false      
    scored: true

  - id: 1.11
    text: "Manage the AlwaysPullImages admission controller"
    audit: "grep -A4 AlwaysPullImages /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "disable: false"
        compare:
          op: has
          value: "false"
        set: true
    remediation: |
      Edit the kubernetes master config file /etc/origin/master/master-config.yaml
      and add the the entry below.

      admissionConfig:
        pluginConfig:
          AlwaysPullImages:
            configuration:
              kind: DefaultAdmissionConfig
              apiVersion: v1
              disable: false      
    scored: true

  - id: 1.12
    text: "Use Security Context Constraints instead of DenyEscalatingExec admission"
    type: "skip"
    scored: true

  - id: 1.13
    text: "Use Security Context Constraints instead of the SecurityContextDeny admission controller"
    type: "skip"
    scored: true

  - id: 1.14
    text: "Manage the NamespaceLifecycle admission controller"
    audit: "grep -A4 NamespaceLifecycle /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "NamespaceLifecycle"
        set: false
    remediation: |
      Edit the kubernetes master config file /etc/origin/master/master-config.yaml
      and remove the following entry.

      NamespaceLifecycle: 
        configuration:
          kind: DefaultAdmissionConfig
          apiVersion: v1
          disable: true      
    scored: true

  - id: 1.15
    text: "Configure API server auditing - audit log file path"
    audit: "grep -A5 auditConfig /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "enabled: true"
        compare:
          op: has
          value: "true"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml, update the following entry and restart the API server.

      auditConfig:
        auditFilePath: ""/etc/origin/master/audit-ocp.log""
        enabled: true
        maximumFileRetentionDays: 30
        maximumFileSizeMegabytes: 10
        maximumRetainedFiles: 10

      Make the same changes in the inventory/ansible variables so the changes are not
      lost when an upgrade occurs.      
    scored: true

  - id: 1.16
    text: "Configure API server auditing - audit log retention"
    audit: "grep -A5 auditConfig /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "maximumFileRetentionDays: 30"
        compare:
          op: has
          value: "maximumFileRetentionDays"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml,
      update the maximumFileRetentionDays entry and restart the API server.

      auditConfig:
        auditFilePath: ""/etc/origin/master/audit-ocp.log""
        enabled: true
        maximumFileRetentionDays: 30
        maximumFileSizeMegabytes: 10
        maximumRetainedFiles: 10

      Make the same changes in the inventory/ansible variables so the changes are not
      lost when an upgrade occurs.      
    scored: true

  - id: 1.17
    text: "Configure API server auditing - audit log backup retention"
    audit: "grep -A5 auditConfig /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "maximumRetainedFiles: 10"
        compare:
          op: has
          value: "maximumRetainedFiles"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml, update the maximumRetainedFiles entry,
      set enabled to true and restart the API server.

      auditConfig:
        auditFilePath: ""/etc/origin/master/audit-ocp.log""
        enabled: true
        maximumFileRetentionDays: 30
        maximumFileSizeMegabytes: 10
        maximumRetainedFiles: 10

      Make the same changes in the inventory/ansible variables so the changes are not
      lost when an upgrade occurs.      
    scored: true

  - id: 1.18
    text: "Configure audit log file size"
    audit: "grep -A5 auditConfig /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "maximumFileSizeMegabytes: 30"
        compare:
          op: has
          value: "maximumFileSizeMegabytes"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml, update the maximumFileSizeMegabytes entry,
      set enabled to true and restart the API server.

      auditConfig:
        auditFilePath: ""/etc/origin/master/audit-ocp.log""
        enabled: true
        maximumFileRetentionDays: 30
        maximumFileSizeMegabytes: 10
        maximumRetainedFiles: 10

      Make the same changes in the inventory/ansible variables so the changes are not
      lost when an upgrade occurs.      
    scored: true

  - id: 1.19
    text: "Verify that authorization-mode is not set to AlwaysAllow"
    audit: "grep -A1 authorization-mode /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "authorization-mode"
        set: false
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and remove the authorization-mode
      entry.

      kubernetesMasterConfig:
        apiServerArguments:
           authorization-mode:
             - AllowAll      
    scored: true

  - id: 1.20
    text: "Verify that the token-auth-file flag is not set"
    audit: "grep token-auth-file /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "token-auth-file"
        set: false
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and remove the token-auth-file
      entry under apiserverArguments section.

      kubernetesMasterConfig:
        apiServerArguments:
           token-auth-file:
             - /path/to/file      
    scored: true

  - id: 1.21
    text: "Verify the API server certificate authority"
    audit: "grep -A1 kubelet-certificate-authority /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "kubelet-certificate-authority"
        set: false
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and remove the following
      configuration under apiserverArguments section.

      kubernetesMasterConfig:
        apiServerArguments:
           kubelet-certificat-authority:
             - /path/to/ca      
    scored: true

  - id: 1.22
    text: "Verify the API server client certificate and client key"
    audit: "grep -A4 kubeletClientInfo /etc/origin/master/master-config.yaml"
    tests:
      bin_op: and
      test_items:
      - flag: "keyFile: master.kubelet-client.key"
        compare:
          op: has
          value: "keyFile: master.kubelet-client.key"
        set: true
      - flag: "certFile: master.kubelet-client.crt"
        compare:
          op: has
          value: "certFile: master.kubelet-client.crt"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and add the following
      configuration under kubeletClientInfo

      kubeletClientInfo:
        ca: ca-bundle.crt
        certFile: master.kubelet-client.crt
        keyFile: master.kubelet-client.key
        port: 10250      
    scored: true

  - id: 1.23
    text: "Verify that the service account lookup flag is not set"
    type: skip
    scored: true

  - id: 1.24
    text: "Verify the PodSecurityPolicy is disabled to ensure use of SecurityContextConstraints"
    type: "skip"
    scored: true

  - id: 1.25
    text: "Verify that the service account key file argument is not set"
    audit: "grep -A9 serviceAccountConfig /etc/origin/master/master-config.yaml"
    tests:
      bin_op: and
      test_items:
      - flag: "privateKeyFile: serviceaccounts.private.key"
        compare:
          op: has
          value: "privateKeyFile: serviceaccounts.private.key"
        set: true
      - flag: "serviceaccounts.public.key"
        compare:
          op: has
          value: "serviceaccounts.public.key"
        set: true
    remediation: |
      OpenShift API server does not use the service-account-key-file argument. 
      Even if value is set in master-config.yaml, it will not be used to verify 
      service account tokens, as it is in upstream Kubernetes. The ServiceAccount 
      token authenticator is configured with serviceAccountConfig.publicKeyFiles in 
      the master-config.yaml. OpenShift does not reuse the apiserver TLS key.

      Edit the Openshift master config file /etc/origin/master/master-config.yaml and set the privateKeyFile 
      and publicKeyFile configuration under serviceAccountConfig.

        serviceAccountConfig:
          limitSecretReferences: false
          managedNames:
            - default
            - builder
            - deployer
          masterCA: ca-bundle.crt
          privateKeyFile: serviceaccounts.private.key
          publicKeyFiles:
            - serviceaccounts.public.key

      Verify that privateKeyFile and publicKeyFile exist and set.      
    scored: true

  - id: 1.26
    text: "Verify the certificate and key used for communication with etcd"
    audit: "grep -A3 etcdClientInfo /etc/origin/master/master-config.yaml"
    tests:
      bin_op: and
      test_items:
      - flag: "certFile: master.etcd-client.crt"
        compare:
          op: has
          value: "certFile: master.etcd-client.crt"
        set: true
      - flag: "keyFile: master.etcd-client.key"
        compare:
          op: has
          value: "keyFile: master.etcd-client.key"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and set keyFile and certFile 
      under etcdClientInfo like below.
      
        etcdClientInfo:
          ca: master.etcd-ca.crt
          certFile: master.etcd-client.crt
          keyFile: master.etcd-client.key      
    scored: true

  - id: 1.27
    text: "Verify that the ServiceAccount admission controller is enabled"
    audit: "grep -A4 ServiceAccount /etc/origin/master/master-config.yaml"
    tests:
      bin_op: or
      test_items:
      - flag: "ServiceAccount"
        set: false
      - flag: "disable: false"
        compare:
          op: has
          value: "disable: false"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and enable ServiceAccount
      admission control policy.
      
        ServiceAccount: 
          configuration:
            kind: DefaultAdmissionConfig
            apiVersion: v1
            disable: false      
    scored: true

  - id: 1.28
    text: "Verify the certificate and key used to encrypt API server traffic"
    audit: "grep -A7 servingInfo /etc/origin/master/master-config.yaml"
    tests:
      bin_op: and
      test_items:
      - flag: "certFile: master.server.crt"
        compare:
          op: has
          value: "certFile: master.server.crt"
        set: true
      - flag: "keyFile: master.server.key"
        compare:
          op: has
          value: "keyFile: master.server.key"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and set keyFile and certFile under servingInfo.

        servingInfo:
          bindAddress: 0.0.0.0:8443
          bindNetwork: tcp4
          certFile: master.server.crt
          clientCA: ca.crt
          keyFile: master.server.key
          maxRequestsInFlight: 500
          requestTimeoutSeconds: 3600      
    scored: true

  - id: 1.29
    text: "Verify that the --client-ca-file argument is not set"
    audit: "grep client-ca-file /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "clientCA: ca.crt"
        set: false
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and set clientCA under servingInfo.

        servingInfo:
          bindAddress: 0.0.0.0:8443
          bindNetwork: tcp4
          certFile: master.server.crt
          clientCA: ca.crt
          keyFile: master.server.key
          maxRequestsInFlight: 500
          requestTimeoutSeconds: 3600      
    scored: true

  - id: 1.30
    text: "Verify the CA used for communication with etcd"
    audit: "grep -A3 etcdClientInfo /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "ca: master.etcd-ca.crt"
        compare:
          op: has
          value: "ca: master.etcd-ca.crt"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and set ca under etcdClientInfo.

        etcdClientInfo:
          ca: master.etcd-ca.crt
          certFile: master.etcd-client.crt
          keyFile: master.etcd-client.key      
    scored: true

  - id: 1.31
    text: "Verify that the authorization-mode argument is not set"
    type: "skip"
    scored: true

  - id: 1.32
    text: "Verify that the NodeRestriction admission controller is enabled"
    audit: "grep -A4 NodeRestriction /etc/origin/master/master-config.yaml"
    tests:
      bin_op: or
      test_items:
      - flag: "NodeRestriction"
        set: false
      - flag: "disable: false"
        compare:
          op: has
          value: "disable: false"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and enable NodeRestriction ca under etcdClientInfo.

        NodeRestriction:
          configuration:
            kind: DefaultAdmissionConfig
            apiVersion: v1
            disable: false      
    scored: true

  - id: 1.33
    text: "Configure encryption of data at rest in etcd datastore"
    audit: "grep -A1 experimental-encryption-provider-config /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "experimental-encryption-provider-config:"
        compare:
          op: has
          value: "experimental-encryption-provider-config:"
        set: true
    remediation: |
      Follow the instructions in the documentation to configure encryption. 
      https://docs.openshift.com/container-platform/3.10/admin_guide/encrypting_data.html      
    scored: true

  - id: 1.34
    text: "Set the encryption provider to aescbc for etcd data at rest"
    audit: "grep -A1 experimental-encryption-provider-config /etc/origin/master/master-config.yaml | sed -n '2p' | awk '{ print $2 }' | xargs grep -A1 providers"
    tests:
      test_items:
      - flag: "aescbc:"
        compare:
          op: has
          value: "aescbc:"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and set aescbc as the first provider in encryption provider config.
      See https://docs.openshift.com/container-platform/3.10/admin_guide/encrypting_data.html.      
    scored: true

  - id: 1.35
    text: "Enable the EventRateLimit plugin"
    audit: "grep -A4 EventRateLimit /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "disable: false"
        compare:
          op: has
          value: "disable: false"
        set: true
    remediation: |
      Follow the documentation to enable the EventRateLimit plugin.
      https://docs.openshift.com/container-platform/3.10/architecture/additional_concepts/admission_controllers.html#admission-controllers-general-admission-rules       
    scored: true

  - id: 1.36
    text: "Configure advanced auditing"
    audit: "grep AdvancedAuditing /etc/origin/master/master-config.yaml"
    tests:
      bin_op: or
      test_items:
      - flag: "AdvancedAuditing"
        compare:
          op: eq
          value: "true"
        set: true
      - flag: "AdvancedAuditing"
        set: false
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and enable AdvancedAuditing,

      kubernetesMasterConfig:
        apiServerArguments:
          feature-gates:
            - AdvancedAuditing=true      
    scored: true

  # Review 1.1.37 in Aquasec shared doc, the tests are net zero.
  - id: 1.37
    text: "Adjust the request timeout argument for your cluster resources"
    audit: "grep request-timeout /etc/origin/master/master-config.yaml"
    type: manual
    remediation: |
      change the request-timeout value in the  /etc/origin/master/master-config.yaml      
    scored: true


- id: 2
  text: "Scheduler"
  checks:
  - id: 2.1
    text: "Verify that Scheduler profiling is not exposed to the web"
    type: "skip"
    scored: true


- id: 3
  text: "Controller Manager"
  checks:
  - id: 3.1
    text: "Adjust the terminated-pod-gc-threshold argument as needed"
    audit: "grep terminated-pod-gc-threshold -A1 /etc/origin/master/master-config.yaml"
    tests:
      test_items:
      - flag: "terminated-pod-gc-threshold:"
        compare:
          op: has
          value: "12500"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml  and enable terminated-pod-gc-threshold.

        kubernetesMasterConfig:
          controllerArguments:
             terminated-pod-gc-threshold:
             - true

      Enabling the "terminated-pod-gc-threshold" settings is optional.      
    scored: true

  - id: 3.2
    text: "Verify that Controller profiling is not exposed to the web"
    type: "skip"
    scored: true

  - id: 3.3
    text: "Verify that the --use-service-account-credentials argument is set to true"
    audit: "grep -A2 use-service-account-credentials /etc/origin/master/master-config.yaml"
    tests:
      bin_op: or
      test_items:
      - flag: "use-service-account-credentials"
        set: false
      - flag: "true"
        compare:
          op: has
          value: "true"
        set: true
    remediation: |
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and set use-service-account-credentials
      to true under controllerArguments section.

      kubernetesMasterConfig:
        controllerArguments:
           use-service-account-credentials:
             - true      
    scored: true

  # Review 3.4
  - id: 3.4
    text: "Verify that the --service-account-private-key-file argument is set as appropriate"
    audit: |
      grep -A9 serviceAccountConfig /etc/origin/master/master-config.yaml | grep privateKeyFile;
      grep -A2 service-account-private-key-file /etc/origin/master/master-config.yaml      
    tests:
      bin_op: and
      test_items:
        - flag: "privateKeyFile: serviceaccounts.private.key"
          compare:
            op: has
            value: "privateKeyFile"
        - flag: "service-account-private-key-file"
          set: false
    remediation:
      Edit the Openshift master config file /etc/origin/master/master-config.yaml and remove service-account-private-key-file
    scored: true

  # Review 3.5
  - id: 3.5
    text: "Verify that the --root-ca-file argument is set as appropriate"
    audit: "/bin/sh -c 'grep root-ca-file /etc/origin/master/master-config.yaml; grep -A9 serviceAccountConfig /etc/origin/master/master-config.yaml'"
    tests:
      bin_op: and
      test_items:
        - flag: "root-ca-file=/etc/origin/master/ca-bundle.crt"
          compare:
            op: has
            value: "/etc/origin/master/ca-bundle.crt"
          set: true
      test_items:
        - flag: "masterCA: ca-bundle.crt"
          compare:
            op: has
            value: "ca-bundle.crt"
          set: true
    remediation:
      Reset to OpenShift defaults OpenShift starts kube-controller-manager with
      root-ca-file=/etc/origin/master/ca-bundle.crt by default.  OpenShift Advanced
      Installation creates this certificate authority and configuration without any
      configuration required.

      https://docs.openshift.com/container-platform/3.10/admin_guide/service_accounts.html"
    scored: true

  - id: 3.6
    text: "Verify that Security Context Constraints are applied to Your Pods and Containers"
    type: "skip"
    scored: false

  - id: 3.7
    text: "Manage certificate rotation"
    audit: "grep -B3 RotateKubeletServerCertificate=true /etc/origin/master/master-config.yaml"
    tests:
      test_items:
        - flag: "RotateKubeletServerCertificate"
          compare:
            op: eq
            value: "true"
          set: true
    remediation:
      If you decide not to enable the RotateKubeletServerCertificate feature,
      be sure to use the Ansible playbooks provided with the OpenShift installer to
      automate re-deploying certificates.
    scored: true


- id: 4
  text: "Configuration Files"
  checks:
  - id: 4.1
    text: "Verify the OpenShift default permissions for the API server pod specification file"
    audit: "stat -c %a /etc/origin/node/pods/apiserver.yaml"
    tests:      
      test_items:
        - flag: "600"
          compare:
            op: eq
            value: "600"
          set: true
    remediation: |
      Run the below command.

      chmod 600 /etc/origin/node/pods/apiserver.yaml      
    scored: true

  - id: 4.2
    text: "Verify the OpenShift default file ownership for the API server pod specification file"
    audit: "stat -c %U:%G /etc/origin/node/pods/apiserver.yaml"
    tests:
      test_items:
      - flag: "root:root"
        compare:
          op: eq
          value: "root:root"
        set: true
    remediation: |
      Run the below command on the master node.

      chown root:root /etc/origin/node/pods/apiserver.yaml      
    scored: true

  - id: 4.3
    text: "Verify the OpenShift default file permissions for the controller manager pod specification file"
    audit: "stat -c %a /etc/origin/node/pods/controller.yaml"
    tests:      
      test_items:
        - flag: "600"
          compare:
            op: eq
            value: "600"
          set: true
    remediation: |
      Run the below command on the master node.

      chmod 600 /etc/origin/node/pods/controller.yaml      
    scored: true

  - id: 4.4
    text: "Verify the OpenShift default ownership for the controller manager pod specification file"
    audit: "stat -c %U:%G /etc/origin/node/pods/controller.yaml"
    tests:
      test_items:
      - flag: "root:root"
        compare:
          op: eq
          value: "root:root"
        set: true
    remediation: |
      Run the below command on the master node.

      chown root:root /etc/origin/node/pods/controller.yaml      
    scored: true

  - id: 4.5
    text: "Verify the OpenShift default permissions for the scheduler pod specification file"
    audit: "stat -c %a /etc/origin/node/pods/controller.yaml"
    tests:      
      test_items:
        - flag: "600"
          compare:
            op: eq
            value: "600"
          set: true
    remediation: |
      Run the below command.

      chmod 600 stat -c %a /etc/origin/node/pods/controller.yaml      
    scored: true

  - id: 4.6
    text: "Verify the scheduler pod specification file ownership set by OpenShift"
    audit: "stat -c %u:%g /etc/origin/node/pods/controller.yaml"
    tests:
      test_items:
      - flag: "root:root"
        compare:
          op: eq
          value: "root:root"
        set: true
    remediation: |
      Run the below command on the master node.

      chown root:root /etc/origin/node/pods/controller.yaml      
    scored: true

  - id: 4.7
    text: "Verify the OpenShift default etcd pod specification file permissions"
    audit: "stat -c %a /etc/origin/node/pods/etcd.yaml"
    tests:      
      test_items:
        - flag: "600"
          compare:
            op: eq
            value: "600"
          set: true
    remediation: |
      Run the below command.

      chmod 600 /etc/origin/node/pods/etcd.yaml      
    scored: true

  - id: 4.8
    text: "Verify the OpenShift default etcd pod specification file ownership"
    audit: "stat -c %U:%G /etc/origin/node/pods/etcd.yaml"
    tests:
      test_items:
      - flag: "root:root"
        compare:
          op: eq
          value: "root:root"
        set: true
    remediation: |
      Run the below command on the master node.

      chown root:root /etc/origin/node/pods/etcd.yaml      
    scored: true

  - id: 4.9
    text: "Verify the default OpenShift Container Network Interface file permissions"
    audit: "stat -c %a /etc/origin/openvswitch/ /etc/cni/net.d/"
    tests:
      bin_op: or
      test_items:
      - flag: "644"
        compare:
          op: eq
          value: "644"
        set: true
      - flag: "640"
        compare:
          op: eq
          value: "640"
        set: true
      - flag: "600"
        compare:
          op: eq
          value: "600"
        set: true
    remediation: |
      Run the below command.

      chmod 644 -R /etc/origin/openvswitch/ /etc/cni/net.d/      
    scored: true

  - id: 4.10
    text: "Verify the default OpenShift Container Network Interface file ownership"
    audit: "stat -c %U:%G /etc/origin/openvswitch/ /etc/cni/net.d/"
    tests:
      test_items:
      - flag: "root:root"
        compare:
          op: eq
          value: "root:root"
        set: true
    remediation: |
      Run the below command on the master node.

      chown root:root /etc/origin/openvswitch/ /etc/cni/net.d/      
    scored: true

  - id: 4.11
    text: "Verify the default OpenShift etcd data directory permissions"
    audit: "stat -c %a /var/lib/etcd"
    tests:
      test_items:
      - flag: "700"
        compare:
          op: eq
          value: "700"
        set: true
    remediation: |
      On the etcd server node, get the etcd data directory, passed as an argument --data-dir ,
      from the below command:
      ps -ef | grep etcd
      Run the below command (based on the etcd data directory found above). For example,
      chmod 700 /var/lib/etcd      
    scored: true

  - id: 4.12
    text: "Verify the default OpenShift etcd data directory ownership"
    audit: "stat -c %U:%G /var/lib/etcd"
    tests:
      test_items:
      - flag: "etcd:etcd"
        compare:
          op: eq
          value: "etcd:etcd"
        set: true
    remediation: |
      Run the below command on the master node.

      chown etcd:etcd /var/lib/etcd      
    scored: true

  - id: 4.13
    text: "Verify the default OpenShift admin.conf file permissions"
    audit: "stat -c %a /etc/origin/master/admin.kubeconfig"
    tests:
      bin_op: or
      test_items:
      - flag: "644"
        compare:
          op: eq
          value: "644"
        set: true
      - flag: "640"
        compare:
          op: eq
          value: "640"
        set: true
      - flag: "600"
        compare:
          op: eq
          value: "600"
        set: true
    remediation: |
      Run the below command.

      chmod 644 /etc/origin/master/admin.kubeconfig"      
    scored: true

  - id: 4.14
    text: "Verify the default OpenShift admin.conf file ownership"
    audit: "stat -c %U:%G /etc/origin/master/admin.kubeconfig"
    tests:
      test_items:
      - flag: "root:root"
        compare:
          op: eq
          value: "root:root"
        set: true
    remediation: |
      Run the below command on the master node.

      chown root:root /etc/origin/master/admin.kubeconfig      
    scored: true

  - id: 4.15
    text: "Verify the default OpenShift scheduler.conf file permissions"
    audit: "stat -c %a /etc/origin/master/openshift-master.kubeconfig"
    tests:
      bin_op: or
      test_items:
      - flag: "644"
        compare:
          op: eq
          value: "644"
        set: true
      - flag: "640"
        compare:
          op: eq
          value: "640"
        set: true
      - flag: "600"
        compare:
          op: eq
          value: "600"
        set: true
    remediation: |
      Run the below command.

      chmod 644 /etc/origin/master/openshift-master.kubeconfig      
    scored: true

  - id: 4.16
    text: "Verify the default OpenShift scheduler.conf file ownership"
    audit: "stat -c %U:%G /etc/origin/master/openshift-master.kubeconfig"
    tests:
      test_items:
      - flag: "root:root"
        compare:
          op: eq
          value: "root:root"
        set: true
    remediation: |
      Run the below command on the master node.

      chown root:root /etc/origin/master/openshift-master.kubeconfig      
    scored: true

  - id: 4.17
    text: "Verify the default Openshift controller-manager.conf file permissions"
    audit: "stat -c %a /etc/origin/master/openshift-master.kubeconfig"
    tests:
      bin_op: or
      test_items:
      - flag: "644"
        compare:
          op: eq
          value: "644"
        set: true
      - flag: "640"
        compare:
          op: eq
          value: "640"
        set: true
      - flag: "600"
        compare:
          op: eq
          value: "600"
        set: true
    remediation: |
      Run the below command.

      chmod 644 /etc/origin/master/openshift-master.kubeconfig      
    scored: true

  - id: 4.18
    text: "Ensure that the controller-manager.conf file ownership is set to root:root (Scored)"
    audit: "stat -c %U:%G /etc/origin/master/openshift-master.kubeconfig"
    tests:
      test_items:
      - flag: "root:root"
        compare:
          op: eq
          value: "root:root"
        set: true
    remediation: |
      Run the below command on the master node.

      chown root:root /etc/origin/master/openshift-master.kubeconfig      
    scored: true


- id: 5
  text: "Etcd"
  checks:
  - id: 5.1
    text: "Verify the default OpenShift cert-file and key-file configuration"
    audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_CERT_FILE=/etc/etcd/server.crt /proc/1/environ; /usr/local/bin/master-exec etcd etcd grep etcd_key_file=/etc/etcd/server.key /proc/1/environ; grep ETCD_CERT_FILE=/etc/etcd/server.crt /etc/etcd/etcd.conf; grep ETCD_KEY_FILE=/etc/etcd/server.key /etc/etcd/etcd.conf'"
    tests:
      bin_op: and
      test_items:
      - flag: "Binary file /proc/1/environ matches"
        compare:
          op: has
          value: "Binary file /proc/1/environ matches"
        set: true
      - flag: "ETCD_CERT_FILE=/etc/etcd/server.crt"
        compare:
          op: has
          value: "ETCD_CERT_FILE=/etc/etcd/server.crt"
        set: true
      - flag: "ETCD_KEY_FILE=/etc/etcd/server.key"
        compare:
          op: has
          value: "ETCD_KEY_FILE=/etc/etcd/server.key"
        set: true
    remediation: |
      Reset to the OpenShift default configuration.      
    scored: true

  - id: 5.2
    text: "Verify the default OpenShift setting for the client-cert-auth argument"
    audit: "/bin/sh -c'/usr/local/bin/master-exec etcd etcd grep ETCD_CLIENT_CERT_AUTH=true /proc/1/environ; grep ETCD_CLIENT_CERT_AUTH /etc/etcd/etcd.conf'"
    tests:
      bin_op: and
      test_items:
      - flag: "Binary file /proc/1/environ matches"
        compare:
          op: has
          value: "Binary file /proc/1/environ matches"
        set: true
      - flag: "ETCD_CLIENT_CERT_AUTH=true"
        compare:
          op: has
          value: "ETCD_CLIENT_CERT_AUTH=true"
        set: true
    remediation: |
      Reset to the OpenShift default configuration.      
    scored: true

  - id: 5.3
    text: "Verify the OpenShift default values for etcd_auto_tls"
    audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_AUTO_TLS /proc/1/environ; grep ETCD_AUTO_TLS /etc/etcd/etcd.conf'"
    tests:
      bin_op: or
      test_items:
      - flag: "ETCD_AUTO_TLS=false"
        compare:
          op: has
          value: "ETCD_AUTO_TLS=false"
        set: true
      - flag: "#ETCD_AUTO_TLS"
        compare:
          op: has
          value: "#ETCD_AUTO_TLS"
        set: true
    remediation: |
      Reset to the OpenShift default configuration.      
    scored: true

  - id: 5.4
    text: "Verify the OpenShift default peer-cert-file and peer-key-file arguments for etcd"
    audit: "/bin/sh -c'/usr/local/bin/master-exec etcd etcd grep ETCD_PEER_CERT_FILE=/etc/etcd/peer.crt /proc/1/environ; /usr/local/bin/master-exec etcd etcd grep ETCD_PEER_KEY_FILE=/etc/etcd/peer.key /proc/1/environ; grep ETCD_PEER_CERT_FILE /etc/etcd/etcd.conf; grep ETCD_PEER_KEY_FILE /etc/etcd/etcd.conf'"
    tests:
      bin_op: and
      test_items:
      - flag: "Binary file /proc/1/environ matches"
        compare:
          op: has
          value: "Binary file /proc/1/environ matches"
        set: true
      - flag: "ETCD_PEER_CERT_FILE=/etc/etcd/peer.crt"
        compare:
          op: has
          value: "ETCD_PEER_CERT_FILE=/etc/etcd/peer.crt"
        set: true
      - flag: "ETCD_PEER_KEY_FILE=/etc/etcd/peer.key"
        compare:
          op: has
          value: "ETCD_PEER_KEY_FILE=/etc/etcd/peer.key"
        set: true
    remediation: |
      Reset to the OpenShift default configuration.      
    scored: true

  - id: 5.5
    text: "Verify the OpenShift default configuration for the peer-client-cert-auth"
    audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_PEER_CLIENT_CERT_AUTH=true /proc/1/environ; grep ETCD_PEER_CLIENT_CERT_AUTH /etc/etcd/etcd.conf'"
    tests:
      bin_op: and
      test_items:
      - flag: "Binary file /proc/1/environ matches"
        compare:
          op: has
          value: "Binary file /proc/1/environ matches"
        set: true
      - flag: "ETCD_PEER_CLIENT_CERT_AUTH=true"
        compare:
          op: has
          value: "ETCD_PEER_CLIENT_CERT_AUTH=true"
        set: true
    remediation: |
      Reset to the OpenShift default configuration.      
    scored: true

  - id: 5.6
    text: "Verify the OpenShift default configuration for the peer-auto-tls argument"
    audit: "/bin/sh -c '/usr/local/bin/master-exec etcd etcd grep ETCD_PEER_AUTO_TLS /proc/1/environ; grep ETCD_PEER_AUTO_TLS /etc/etcd/etcd.conf'"
    tests:
      bin_op: and
      test_items:
      - flag: "Binary file /proc/1/environ matches"
        compare:
          op: has
          value: "Binary file /proc/1/environ matches"
        set: true
      - flag: "#ETCD_PEER_AUTO_TLS=false"
        compare:
          op: has
          value: "#ETCD_PEER_AUTO_TLS=false"
        set: true
    remediation: |
      Reset to the OpenShift default configuration.      
    scored: true

  - id: 5.7
    text: "Optionally modify the wal-dir argument"
    type: "skip"
    scored: true

  - id: 5.8
    text: "Optionally modify the max-wals argument"
    type: "skip"
    scored: true

  - id: 5.9
    text: "Verify the OpenShift default configuration for the etcd Certificate Authority"
    audit: "openssl x509 -in /etc/origin/master/master.etcd-ca.crt -subject -issuer -noout | sed 's/@/ /'"
    tests:
      test_items:
      - flag: "issuer= /CN=etcd-signer"
        compare:
          op: has
          value: "issuer= /CN=etcd-signer"
        set: true
    remediation: |
      Reset to the OpenShift default configuration.      
    scored: false


- id: 6
  text: "General Security Primitives"
  checks:
  - id: 6.1
    text: "Ensure that the cluster-admin role is only used where required"
    type: "manual"
    remediation: |
      Review users, groups, serviceaccounts bound to cluster-admin:
      oc get clusterrolebindings | grep cluster-admin

      Review users and groups bound to cluster-admin and decide whether they require
      such access. Consider creating least-privilege roles for users and service accounts      
    scored: false

  - id: 6.2
    text: "Verify Security Context Constraints as in use"
    type: "manual"
    remediation: |
      Review Security Context Constraints:
      oc get scc

      Use OpenShift's Security Context Constraint feature, which has been contributed
      to Kubernetes as Pod Security Policies. PSPs are still beta in Kubernetes 1.10.
      OpenShift ships with two SCCs: restricted and privileged.

      The two default SCCs will be created when the master is started. The restricted
      SCC is granted to all authenticated users by default.

       https://docs.openshift.com/container-platform/3.10/admin_guide/manage_scc.html"      
    scored: false

  - id: 6.3
    text: "Use OpenShift projects to maintain boundaries between resources"
    type: "manual"
    remediation: |
      Review projects:
      oc get projects      
    scored: false

  - id: 6.4
    text: "Create network segmentation using the Multi-tenant plugin or Network Policies"
    type: "manual"
    remediation: |
      Verify on masters the plugin being used:
      grep networkPluginName /etc/origin/master/master-config.yaml

      OpenShift provides multi-tenant networking isolation (using Open vSwich and
      vXLAN), to segregate network traffic between containers belonging to different
      tenants (users or applications) while running on a shared cluster. Red Hat also
      works with 3rd-party SDN vendors to provide the same level of capabilities
      integrated with OpenShift. OpenShift SDN is included a part of OpenShift
      subscription.

      OpenShift supports Kubernetes NetworkPolicy. Administrator must configure
      NetworkPolicies if desired.

      https://docs.openshift.com/container-platform/3.10/architecture/networking/sdn.html#architecture-additional-concepts-sdn

      Ansible Inventory variable: os_sdn_network_plugin_name:
      https://docs.openshift.com/container-platform/3.10/install/configuring_inventory_file.html      
    scored: false

  - id: 6.5
    text: "Enable seccomp and configure custom Security Context Constraints"
    type: "manual"
    remediation: |
      Verify SCCs that have been configured with seccomp:
      oc get scc -ocustom-columns=NAME:.metadata.name,SECCOMP-PROFILES:.seccompProfiles

      OpenShift does not enable seccomp by default. To configure seccomp profiles that
      are applied to pods run by the SCC, follow the instructions in the
      documentation:

      https://docs.openshift.com/container-platform/3.9/admin_guide/seccomp.html#admin-guide-seccomp      
    scored: false

  - id: 6.6
    text: "Review Security Context Constraints"
    type: "manual"
    remediation: |
      Review SCCs:
      oc describe scc

      Use OpenShift's Security Context Constraint feature, which has been contributed
      to Kubernetes as Pod Security Policies. PSPs are still beta in Kubernetes 1.10.

      OpenShift ships with two SCCs: restricted and privileged. The two default SCCs
      will be created when the master is started. The restricted SCC is granted to
      all authenticated users by default.

      All pods are run under the restricted SCC by default. Running a pod under any
      other SCC requires an account with cluster admin capabilities to grant access
      for the service account.

      SecurityContextConstraints limit what securityContext is applied to pods and
      containers.

      https://docs.openshift.com/container-platform/3.10/admin_guide/manage_scc.html      
    scored: false

  - id: 6.7
    text: "Manage Image Provenance using ImagePolicyWebhook admission controller"
    type: "manual"
    remediation: |
      Review imagePolicyConfig in /etc/origin/master/master-config.yaml.      
    scored: false

  - id: 6.8
    text: "Configure Network policies as appropriate"
    type: "manual"
    remediation: |
      If ovs-networkplugin is used, review network policies:
      oc get networkpolicies

      OpenShift supports Kubernetes NetworkPolicy via ovs-networkpolicy plugin.
      If choosing ovs-multitenant plugin, each namespace is isolated in its own
      netnamespace by default.      
    scored: false

  - id: 6.9
    text: "Use Security Context Constraints as compensating controls for privileged containers"
    type: "manual"
    remediation: |
      1) Determine all sccs allowing privileged containers:
         oc get scc -ocustom-columns=NAME:.metadata.name,ALLOWS_PRIVILEGED:.allowPrivilegedContainer
      2) Review users and groups assigned to sccs allowing priviliged containers:
         oc describe sccs <from (1)>

      Use OpenShift's Security Context Constraint feature, which has been contributed
      to Kubernetes as Pod Security Policies. PSPs are still beta in Kubernetes 1.10.

      OpenShift ships with two SCCs: restricted and privileged. The two default SCCs
      will be created when the master is started. The restricted SCC is granted to all
      authenticated users by default.

      Similar scenarios are documented in the SCC
      documentation, which outlines granting SCC access to specific serviceaccounts.
      Administrators may create least-restrictive SCCs based on individual container
      needs.

      For example, if a container only requires running as the root user, the anyuid
      SCC can be used, which will not expose additional access granted by running
      privileged containers.

      https://docs.openshift.com/container-platform/3.10/admin_guide/manage_scc.html      
    scored: false