github.com/khulnasoft-lab/kube-bench@v0.2.1-0.20240330183753-9df52345ae58/cfg/rh-0.7/master.yaml

---
controls:
version: "rh-0.7"
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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubernetesMasterConfig.apiServerArguments.basic-auth-file}"
              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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: and
          test_items:
            - path: "{.kubeletClientInfo.ca}"
              compare:
                op: has
                value: "ca-bundle.crt"
            - path: "{.kubeletClientInfo.certFile}"
              compare:
                op: has
                value: "master.kubelet-client.crt"
            - path: "{.kubeletClientInfo.keyFile}"
              compare:
                op: has
                value: "master.kubelet-client.key"
              set: true
            - path: "{.kubeletClientInfo.port}"
              compare:
                op: eq
                value: "10250"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubernetesMasterConfig.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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubernetesMasterConfig.apiServerArguments.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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: or
          test_items:
            - path: "{.kubernetesMasterConfig.apiServerArguments.secure-port}"
              set: false
            - path: "{.kubernetesMasterConfig.apiServerArguments.secure-port}"
              compare:
                op: noteq
                value: "0"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: or
          test_items:
            - path: "{.repair-malformed-updates}"
              set: false
            - path: "{.repair-malformed-updates}"
              compare:
                op: eq
                value: "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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.AlwaysAdmit}"
              set: false
        remediation: |
          Edit the kubernetes master config file /etc/origin/master/master-config.yaml
          and remove the entry below.

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

      - id: 1.11
        text: "Manage the AlwaysPullImages admission controller"
        audit_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.admissionConfig.pluginConfig.configuration.disable}"
              compare:
                op: eq
                value: "false"
        remediation: |
          Edit the kubernetes master config file /etc/origin/master/master-config.yaml
          and add 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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.auditConfig.enabled}"
              compare:
                op: eq
                value: "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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.auditConfig.maximumFileRetentionDays}"
              compare:
                op: gte
                value: 30
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.auditConfig.maximumRetainedFiles}"
              compare:
                op: eq
                value: "10"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.auditConfig.maximumFileSizeMegabytes}"
              compare:
                op: eq
                value: "30"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubernetesMasterConfig.apiServerArguments.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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubernetesMasterConfig.apiServerArguments.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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubernetesMasterConfig.apiServerArguments.kubelet-certificat-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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: and
          test_items:
            - path: "{.kubeletClientInfo.keyFile}"
              compare:
                op: eq
                value: "master.kubelet-client.key"
            - path: "{.kubeletClientInfo.certFile}"
              compare:
                op: eq
                value: "master.kubelet-client.crt"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: and
          test_items:
            - path: "{.serviceAccountConfig.privateKeyFile}"
              compare:
                op: eq
                value: "serviceaccounts.private.key"
            - path: "{.serviceAccountConfig.publicKeyFiles}"
              compare:
                op: has
                value: "serviceaccounts.public.key"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: and
          test_items:
            - path: "{.etcdClientInfo.certFile}"
              compare:
                op: eq
                value: "master.etcd-client.crt"
            - path: "{.etcdClientInfo.keyFile}"
              compare:
                op: eq
                value: "master.etcd-client.key"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: or
          test_items:
            - path: "{.ServiceAccount.configuration.disable}"
              set: false
            - path: "{.ServiceAccount.configuration.disable}"
              compare:
                op: eq
                value: "false"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: and
          test_items:
            - path: "{.servingInfo.certFile}"
              compare:
                op: eq
                value: "master.server.crt"
            - path: "{.servingInfo.keyFile}"
              compare:
                op: eq
                value: "master.server.key"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.servingInfo.clientCA}"
              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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.etcdClientInfo.ca}"
              compare:
                op: eq
                value: "master.etcd-ca.crt"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: or
          test_items:
            - path: "{.NodeRestriction.configuration.disable}"
              set: false
            - path: "{.NodeRestriction.configuration.disable}"
              compare:
                op: eq
                value: "false"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubernetesMasterConfig.apiServerArguments.experimental-encryption-provider-config}"
        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_config: "grep -A1 experimental-encryption-provider-config /etc/origin/master/master-config.yaml | sed -n '2p' | awk '{ print $2 }' | xargs cat"
        tests:
          bin_op: and
          test_items:
            - path: "{.resources[*].providers[*].aescbc.keys[*]}}"
              compare:
                op: has
                value: "secret"
            - path: "{.resources[*].providers[*].aescbc.keys[*]}}"
              compare:
                op: has
                value: "name"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.admissionConfig.pluginConfig.AlwaysPullImages.configuration.disable}"
              compare:
                op: eq
                value: "false"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: or
          test_items:
            - path: "{.kubernetesMasterConfig.apiServerArguments.feature-gates.AdvancedAuditing}"
              compare:
                op: eq
                value: "true"
            - path: "{.kubernetesMasterConfig.apiServerArguments.feature-gates.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 Khulnasoftsec 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: |
          [Manual test]
          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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubernetesMasterConfig.controllerArguments.terminated-pod-gc-threshold}"
              compare:
                op: eq
                value: "12500"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: or
          test_items:
            - path: "{.kubernetesMasterConfig.controllerArguments.use-service-account-credentials}"
              set: false
            - path: "{.kubernetesMasterConfig.controllerArguments.use-service-account-credentials}"
              compare:
                op: eq
                value: "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


      - 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
        audit_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: and
          test_items:
            - flag: "privateKeyFile: serviceaccounts.private.key"
              path: "{.serviceAccountConfig.privateKeyFile}"
              compare:
                op: eq
                value: "serviceaccounts.private.key"
            - 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


      - id: 3.5
        text: "Verify that the --root-ca-file argument is set as appropriate"
        audit_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          bin_op: and
          test_items:
            - path: "{.serviceAccountConfig.root-ca-file}"
              compare:
                op: eq
                value: "/etc/origin/master/ca-bundle.crt"
            - path: "{.serviceAccountConfig.masterCA}"
              compare:
                op: eq
                value: "ca-bundle.crt"
        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_config: "cat /etc/origin/master/master-config.yaml"
        tests:
          test_items:
            - path: "{.kubeletArguments.feature-gates.RotateKubeletServerCertificate}"
              compare:
                op: eq
                value: "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 permissions=%a /etc/origin/node/pods/apiserver.yaml"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "600"
        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"
        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 permissions=%a /etc/origin/node/pods/controller.yaml"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "600"
        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"
        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 permissions=%a /etc/origin/node/pods/controller.yaml"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "600"
        remediation: |
          Run the below command.

          chmod 600 stat -c permissions=%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"
        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 permissions=%a /etc/origin/node/pods/etcd.yaml"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "600"
        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"
        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 permissions=%a /etc/origin/openvswitch/ /etc/cni/net.d/"
        use_multiple_values: true
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
        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/"
        use_multiple_values: true
        tests:
          test_items:
            - flag: "root:root"
        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 permissions=%a /var/lib/etcd"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "700"
        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"
        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 permissions=%a /etc/origin/master/admin.kubeconfig"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
        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"
        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 permissions=%a /etc/origin/master/openshift-master.kubeconfig"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
        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"
        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 permissions=%a /etc/origin/master/openshift-master.kubeconfig"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
        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"
            - flag: "ETCD_CERT_FILE"
              compare:
                op: eq
                value: "/etc/etcd/server.crt"
            - flag: "ETCD_KEY_FILE"
              compare:
                op: eq
                value: "/etc/etcd/server.key"
        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"
            - flag: "ETCD_CLIENT_CERT_AUTH"
              compare:
                op: eq
                value: "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"
              compare:
                op: eq
                value: "false"
        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"
            - flag: "ETCD_PEER_CERT_FILE"
              compare:
                op: eq
                value: "/etc/etcd/peer.crt"
            - flag: "ETCD_PEER_KEY_FILE"
              compare:
                op: eq
                value: "/etc/etcd/peer.key"
        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"
            - flag: "ETCD_PEER_CLIENT_CERT_AUTH"
              compare:
                op: eq
                value: "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:
          test_items:
            - flag: "ETCD_PEER_AUTO_TLS"
              compare:
                op: noteq
                value: "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"
        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: |
          [Manual test]
          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: |
          [Manual test]
          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: |
          [Manual test]
          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: |
          [Manual test]
          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: |
          [Manual test]
          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: |
          [Manual test]
          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: |
          [Manual test]
          Review imagePolicyConfig in /etc/origin/master/master-config.yaml.
        scored: false

      - id: 6.8
        text: "Configure Network policies as appropriate"
        type: "manual"
        remediation: |
          [Manual test]
          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: |
          [Manual test]
          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