kube-bench/cfg/cis-1.4/master.yaml

---
controls:
version: 1.13
id: 1
text: "Master Node Security Configuration"
type: "master"
groups:
  - id: 1.1
    text: "API Server"
    checks:
      - id: 1.1.1
        text: "Ensure that the --anonymous-auth argument is set to false (Not Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--anonymous-auth"
              compare:
                op: eq
                value: false
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the below parameter.
          --anonymous-auth=false          
        scored: false

      - id: 1.1.2
        text: "Ensure that the --basic-auth-file argument is not set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--basic-auth-file"
              set: false
        remediation: |
          Follow the documentation and configure alternate mechanisms for authentication. Then,
          edit the API server pod specification file $apiserverconf
          on the master node and remove the --basic-auth-file=<filename>
          parameter.          
        scored: true

      - id: 1.1.3
        text: "Ensure that the --insecure-allow-any-token argument is not set (Not Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--insecure-allow-any-token"
              set: false
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and remove the --insecure-allow-any-token
          parameter.          
        scored: true

      - id: 1.1.4
        text: "Ensure that the --kubelet-https argument is set to true (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--kubelet-https"
              compare:
                op: eq
                value: true
              set: true
            - flag: "--kubelet-https"
              set: false
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and remove the --kubelet-https parameter.          
        scored: true

      - id: 1.1.5
        text: "Ensure that the --insecure-bind-address argument is not set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--insecure-bind-address"
              set: false
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and remove the --insecure-bind-address
          parameter.          
        scored: true

      - id: 1.1.6
        text: "Ensure that the --insecure-port argument is set to 0 (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--insecure-port"
              compare:
                op: eq
                value: 0
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          apiserver.yaml on the master node and set the below parameter.
          --insecure-port=0          
        scored: true

      - id: 1.1.7
        text: "Ensure that the --secure-port argument is not set to 0 (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--secure-port"
              compare:
                op: gt
                value: 0
              set: true
            - flag: "--secure-port"
              set: false
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and either remove the --secure-port parameter or
          set it to a different (non-zero) desired port.          
        scored: true

      - id: 1.1.8
        text: "Ensure that the --profiling argument is set to false (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--profiling"
              compare:
                op: eq
                value: false
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the below parameter.
          --profiling=false          
        scored: true

      - id: 1.1.9
        text: "Ensure that the --repair-malformed-updates argument is set to false (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--repair-malformed-updates"
              compare:
                op: eq
                value: false
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the below parameter.
          --repair-malformed-updates=false          
        scored: true

      - id: 1.1.10
        text: "Ensure that the admission control plugin AlwaysAdmit is not set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--enable-admission-plugins"
              compare:
                op: nothave
                value: AlwaysAdmit
              set: true
            - flag: "--enable-admission-plugins"
              set: false
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --enable-admission-plugins parameter to a
          value that does not include AlwaysAdmit.          
        scored: true

      - id: 1.1.11
        text: "Ensure that the admission control plugin AlwaysPullImages is set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--enable-admission-plugins"
              compare:
                op: has
                value: "AlwaysPullImages"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --enable-admission-plugins to
          include AlwaysPullImages.
          --enable-admission-plugins=...,AlwaysPullImages,...          
        scored: true

      - id: 1.1.12
        text: "[DEPRECATED] Ensure that the admission control plugin DenyEscalatingExec is set (Not Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        type: "skip"
        tests:
          test_items:
            - flag: "--enable-admission-plugins"
              compare:
                op: has
                value: "DenyEscalatingExec"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --enable-admission-plugins parameter to a
          value that includes DenyEscalatingExec.
          --enable-admission-plugins=...,DenyEscalatingExec,...          
        scored: false

      - id: 1.1.13
        text: "Ensure that the admission control plugin SecurityContextDeny is set (Not Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--enable-admission-plugins"
              compare:
                op: has
                value: "SecurityContextDeny"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --enable-admission-plugins parameter to
          include SecurityContextDeny.
          --enable-admission-plugins=...,SecurityContextDeny,...          
        scored: false

      - id: 1.1.14
        text: "Ensure that the admission control plugin NamespaceLifecycle is set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--disable-admission-plugins"
              compare:
                op: nothave
                value: "NamespaceLifecycle"
              set: true
            - flag: "--disable-admission-plugins"
              set: false
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --disable-admission-plugins parameter to
          ensure it does not include NamespaceLifecycle.
          --disable-admission-plugins=...,NamespaceLifecycle,...          
        scored: true

      - id: 1.1.15
        text: "Ensure that the --audit-log-path argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--audit-log-path"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --audit-log-path parameter to a suitable
          path and file where you would like audit logs to be written, for example:
          --audit-log-path=/var/log/apiserver/audit.log          
        scored: true

      - id: 1.1.16
        text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--audit-log-maxage"
              compare:
                op: gte
                value: 30
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --audit-log-maxage parameter to 30 or
          as an appropriate number of days: --audit-log-maxage=30          
        scored: true

      - id: 1.1.17
        text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--audit-log-maxbackup"
              compare:
                op: gte
                value: 10
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --audit-log-maxbackup parameter to 10
          or to an appropriate value.
          --audit-log-maxbackup=10          
        scored: true

      - id: 1.1.18
        text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--audit-log-maxsize"
              compare:
                op: gte
                value: 100
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --audit-log-maxsize parameter to an
          appropriate size in MB. For example, to set it as 100 MB:
          --audit-log-maxsize=100          
        scored: true

      - id: 1.1.19
        text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--authorization-mode"
              compare:
                op: nothave
                value: "AlwaysAllow"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --authorization-mode parameter to
          values other than AlwaysAllow. One such example could be as below.
          --authorization-mode=RBAC          
        scored: true

      - id: 1.1.20
        text: "Ensure that the --token-auth-file parameter is not set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--token-auth-file"
              set: false
        remediation: |
          Follow the documentation and configure alternate mechanisms for authentication. Then,
          edit the API server pod specification file $apiserverconf
          on the master node and remove the --token-auth-file=<filename>
          parameter.          
        scored: true

      - id: 1.1.21
        text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--kubelet-certificate-authority"
              set: true
        remediation: |
          Follow the Kubernetes documentation and setup the TLS connection between the
          apiserver and kubelets. Then, edit the API server pod specification file
          $apiserverconf on the master node and set the --kubelet-certificate-authority
          parameter to the path to the cert file for the certificate authority.
          --kubelet-certificate-authority=<ca-string>          
        scored: true

      - id: 1.1.22
        text: "Ensure that the --kubelet-client-certificate and --kubelet-client-key arguments are set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: and
          test_items:
            - flag: "--kubelet-client-certificate"
              set: true
            - flag: "--kubelet-client-key"
              set: true
        remediation: |
          Follow the Kubernetes documentation and set up the TLS connection between the
          apiserver and kubelets. Then, edit API server pod specification file
          $apiserverconf on the master node and set the
          kubelet client certificate and key parameters as below.
          --kubelet-client-certificate=<path/to/client-certificate-file>
          --kubelet-client-key=<path/to/client-key-file>          
        scored: true

      - id: 1.1.23
        text: "Ensure that the --service-account-lookup argument is set to true (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--service-account-lookup"
              set: false
            - flag: "--service-account-lookup"
              compare:
                op: eq
                value: true
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the below parameter.
          --service-account-lookup=true          
        scored: true

      - id: 1.1.24
        text: "Ensure that the admission control plugin PodSecurityPolicy is set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--enable-admission-plugins"
              compare:
                op: has
                value: "PodSecurityPolicy"
              set: true
        remediation: |
          Follow the documentation and create Pod Security Policy objects as per your environment.
          Then, edit the API server pod specification file $apiserverconf
          on the master node and set the --enable-admission-plugins parameter to a
          value that includes PodSecurityPolicy :
          --enable-admission-plugins=...,PodSecurityPolicy,...
          Then restart the API Server.          
        scored: true

      - id: 1.1.25
        text: "Ensure that the --service-account-key-file argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--service-account-key-file"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --service-account-key-file parameter
          to the public key file for service accounts:
          --service-account-key-file=<filename>          
        scored: true

      - id: 1.1.26
        text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as
          appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: and
          test_items:
            - flag: "--etcd-certfile"
              set: true
            - flag: "--etcd-keyfile"
              set: true
        remediation: |
          Follow the Kubernetes documentation and set up the TLS connection between the
          apiserver and etcd. Then, edit the API server pod specification file
          $apiserverconf on the master node and set the etcd
          certificate and key file parameters.
          --etcd-certfile=<path/to/client-certificate-file>
          --etcd-keyfile=<path/to/client-key-file>          
        scored: true

      - id: 1.1.27
        text: "Ensure that the admission control plugin ServiceAccount is set(Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--disable-admission-plugins"
              compare:
                op: nothave
                value: "ServiceAccount"
              set: true
            - flag: "--disable-admission-plugins"
              set: false
        remediation: |
          Follow the documentation and create ServiceAccount objects as per your environment.
          Then, edit the API server pod specification file $apiserverconf
          on the master node and set the --enable-admission-plugins parameter to a
          value that includes ServiceAccount.
          --enable-admission-plugins=...,ServiceAccount,...          
        scored: true

      - id: 1.1.28
        text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set
        as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: and
          test_items:
            - flag: "--tls-cert-file"
              set: true
            - flag: "--tls-private-key-file"
              set: true
        remediation: |
          Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
          Then, edit the API server pod specification file $apiserverconf
          on the master node and set the TLS certificate and private key file
          parameters.
          --tls-cert-file=<path/to/tls-certificate-file>
          --tls-private-key-file=<path/to/tls-key-file>          
        scored: true

      - id: 1.1.29
        text: "Ensure that the --client-ca-file argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--client-ca-file"
              set: true
        remediation: |
          Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
          Then, edit the API server pod specification file $apiserverconf
          on the master node and set the client certificate authority file.
          --client-ca-file=<path/to/client-ca-file>          
        scored: true

      - id: 1.1.30
        text: "Ensure that the --etcd-cafile argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--etcd-cafile"
              set: true
        remediation: |
          Follow the Kubernetes documentation and set up the TLS connection between the
          apiserver and etcd. Then, edit the API server pod specification file
          $apiserverconf on the master node and set the etcd
          certificate authority file parameter.
          --etcd-cafile=<path/to/ca-file>          
        scored: true

      - id: 1.1.31
        text: "Ensure that the API Server only makes use of Strong Cryptographic Ciphers (Not Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--tls-cipher-suites"
              compare:
                op: has
                value: "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the below parameter.
          --tls-cipher-suites=TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_128_GCM_SHA256          
        scored: false

      - id: 1.1.32
        text: "Ensure that the --authorization-mode argument is set to Node (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--authorization-mode"
              compare:
                op: has
                value: "Node"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          on the master node and set the --authorization-mode parameter to a
          value that includes Node.
          --authorization-mode=Node,RBAC          
        scored: true

      - id: 1.1.33
        text: "Ensure that the admission control plugin NodeRestriction is set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--enable-admission-plugins"
              compare:
                op: has
                value: "NodeRestriction"
              set: true
        remediation: |
          Follow the Kubernetes documentation and configure NodeRestriction plug-in on
          kubelets. Then, edit the API server pod specification file $apiserverconf
          on the master node and set the --enable-admission-plugins parameter to a
          value that includes NodeRestriction.
          --enable-admission-plugins=...,NodeRestriction,...          
        scored: true

      - id: 1.1.34
        text: "Ensure that the --encryption-provider-config argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--encryption-provider-config"
              set: true
        remediation: |
          [Manual test]
          Follow the Kubernetes documentation and configure a EncryptionConfig file.
          Then, edit the API server pod specification file $apiserverconf on the
          master node and set the --encryption-provider-config parameter
          to the path of that file:
          --encryption-provider-config=</path/to/EncryptionConfig/File>          
        scored: true

      - id: 1.1.35
        text: "Ensure that the encryption provider is set to aescbc (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        type: "manual"
        remediation: |
          [Manual test]
          Follow the Kubernetes documentation and configure a EncryptionConfig file. In this file,
          choose aescbc as the encryption provider.
          For example,
          kind: EncryptionConfig
          apiVersion: v1
          resources:
            - resources:
              - secrets
                providers:
                - aescbc:
                    keys:
                    - name: key1
                      secret: <32-byte base64-encoded secret>          
        scored: true

      - id: 1.1.36
        text: "Ensure that the admission control plugin EventRateLimit is set (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--enable-admission-plugins"
              compare:
                op: has
                value: "EventRateLimit"
              set: true
        remediation: |
          Follow the Kubernetes documentation and set the desired limits in a
          configuration file. Then, edit the API server pod specification file
          $apiserverconf and set the below parameters.
          --enable-admission-plugins=...,EventRateLimit,...
          --admission-control-config-file=<path/to/configuration/file>          
        scored: true

      - id: 1.1.37a
        text: "Ensure that the AdvancedAuditing argument is not set to false (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--feature-gates"
              compare:
                op: nothave
                value: "AdvancedAuditing=false"
              set: true
            - flag: "--feature-gates"
              set: false
        remediation: |
          Follow the Kubernetes documentation and set the desired audit policy in the
          /etc/kubernetes/audit-policy.yaml file. Then, edit the API server pod specification file $apiserverconf
          and set the below parameters.
          --audit-policy-file=/etc/kubernetes/audit-policy.yaml          
        scored: true

      - id: 1.1.37b
        text: "Ensure that the AdvancedAuditing argument is not set to false (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--audit-policy-file"
              compare:
                op: eq
                value: "/etc/kubernetes/audit-policy.yaml"
              set: true
            - flag: "--audit-policy-file"
              compare:
                op: eq
                value: "/etc/kubernetes/audit-policy.yml"
              set: true
        remediation: |
          Follow the Kubernetes documentation and set the desired audit policy in the
          /etc/kubernetes/audit-policy.yaml file. Then, edit the API server pod specification file $apiserverconf
          and set the below parameters.
          --audit-policy-file=/etc/kubernetes/audit-policy.yaml          
        scored: true

      - id: 1.1.38
        text: "Ensure that the --request-timeout argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--request-timeout"
              set: false
            - flag: "--request-timeout"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverconf
          and set the below parameter as appropriate and if needed. For example,
          --request-timeout=300s          
        scored: true

      - id: 1.1.39
        text: "Ensure that the --authorization-mode argument includes RBAC (Scored)"
        audit: "/bin/ps -ef | grep $apiserverbin | grep -v grep"
        tests:
          test_items:
            - flag: "--authorization-mode"
              compare:
                op: has
                value: "RBAC"
              set: true
        remediation: |
          Edit the API server pod specification file $apiserverbin on the master node and set the --authorization-mode parameter to a value that includes RBAC, for example: --authorization-mode=Node,RBAC          
        scored: true

  - id: 1.2
    text: "Scheduler"
    checks:
      - id: 1.2.1
        text: "Ensure that the --profiling argument is set to false (Scored)"
        audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
        tests:
          test_items:
            - flag: "--profiling"
              compare:
                op: eq
                value: false
              set: true
        remediation: |
          Edit the Scheduler pod specification file $schedulerconf
          file on the master node and set the below parameter.
          --profiling=false          
        scored: true

      - id: 1.2.2
        text: "Ensure that the --address argument is set to 127.0.0.1 (Scored)"
        audit: "/bin/ps -ef | grep $schedulerbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--address"
              compare:
                op: eq
                value: "127.0.0.1"
              set: true
            - flag: "--address"
              set: false
        remediation: |
          Edit the Scheduler pod specification file $schedulerconf
          file on the master node and ensure the correct value for the
          --address parameter.          
        scored: true

  - id: 1.3
    text: "Controller Manager"
    checks:
      - id: 1.3.1
        text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
        tests:
          test_items:
            - flag: "--terminated-pod-gc-threshold"
              set: true
        remediation: |
          Edit the Controller Manager pod specification file $controllermanagerconf
          on the master node and set the --terminated-pod-gc-threshold to an appropriate threshold, for example:
          --terminated-pod-gc-threshold=10          
        scored: true

      - id: 1.3.2
        text: "Ensure that the --profiling argument is set to false (Scored)"
        audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
        tests:
          test_items:
            - flag: "--profiling"
              compare:
                op: eq
                value: false
              set: true
        remediation: |
          Edit the Controller Manager pod specification file $controllermanagerconf
          on the master node and set the below parameter.
          --profiling=false          
        scored: true

      - id: 1.3.3
        text: "Ensure that the --use-service-account-credentials argument is set to true (Scored)"
        audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
        tests:
          test_items:
            - flag: "--use-service-account-credentials"
              compare:
                op: noteq
                value: false
              set: true
        remediation: |
          Edit the Controller Manager pod specification file $controllermanagerconf
          on the master node to set the below parameter.
          --use-service-account-credentials=true          
        scored: true

      - id: 1.3.4
        text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
        tests:
          test_items:
            - flag: "--service-account-private-key-file"
              set: true
        remediation: |
          Edit the Controller Manager pod specification file $controllermanagerconf
          on the master node and set the --service-account-private-
          key-file parameter to the private key file for service accounts.
          --service-account-private-key-file=<filename>          
        scored: true

      - id: 1.3.5
        text: "Ensure that the --root-ca-file argument is set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
        tests:
          test_items:
            - flag: "--root-ca-file"
              set: true
        remediation: |
          Edit the Controller Manager pod specification file $controllermanagerconf
          on the master node and set the --root-ca-file parameter to
          the certificate bundle file.
          --root-ca-file=<path/to/file>          
        scored: true

      - id: 1.3.6
        text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Scored)"
        audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
        tests:
          test_items:
            - flag: "--feature-gates"
              compare:
                op: eq
                value: "RotateKubeletServerCertificate=true"
              set: true
        remediation: |
          Edit the Controller Manager pod specification file $controllermanagerconf
          controller-manager.yaml on the master node and set the --feature-gates parameter to
          include RotateKubeletServerCertificate=true.
          --feature-gates=RotateKubeletServerCertificate=true          
        scored: true

      - id: 1.3.7
        text: "Ensure that the --address argument is set to 127.0.0.1 (Scored)"
        audit: "/bin/ps -ef | grep $controllermanagerbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--address"
              compare:
                op: eq
                value: "127.0.0.1"
              set: true
            - flag: "--address"
              set: false
        remediation: |
          Edit the Controller Manager pod specification file $controllermanagerconf
          controller-manager.yaml on the master node and ensure the correct value
          for the --address parameter.          
        scored: true

  - id: 1.4
    text: "Configuration Files"
    checks:
      - id: 1.4.1
        text: "Ensure that the API server pod specification file permissions are
        set to 644 or more restrictive (Scored)"
        audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c permissions=%a $apiserverconf; fi'"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chmod 644 $apiserverconf          
        scored: true

      - id: 1.4.2
        text: "Ensure that the API server pod specification file ownership is set to
        root:root (Scored)"
        audit: "/bin/sh -c 'if test -e $apiserverconf; then stat -c %U:%G $apiserverconf; fi'"
        tests:
          test_items:
            - flag: "root:root"
              compare:
                op: eq
                value: "root:root"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chown root:root $apiserverconf          
        scored: true

      - id: 1.4.3
        text: "Ensure that the controller manager pod specification file
        permissions are set to 644 or more restrictive (Scored)"
        audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c permissions=%a $controllermanagerconf; fi'"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chmod 644 $controllermanagerconf          
        scored: true

      - id: 1.4.4
        text: "Ensure that the controller manager pod specification file
        ownership is set to root:root (Scored)"
        audit: "/bin/sh -c 'if test -e $controllermanagerconf; then stat -c %U:%G $controllermanagerconf; fi'"
        tests:
          test_items:
            - flag: "root:root"
              compare:
                op: eq
                value: "root:root"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chown root:root $controllermanagerconf          
        scored: true

      - id: 1.4.5
        text: "Ensure that the scheduler pod specification file permissions are set
        to 644 or more restrictive (Scored)"
        audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c permissions=%a $schedulerconf; fi'"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chmod 644 $schedulerconf          
        scored: true

      - id: 1.4.6
        text: "Ensure that the scheduler pod specification file ownership is set to
        root:root (Scored)"
        audit: "/bin/sh -c 'if test -e $schedulerconf; then stat -c %U:%G $schedulerconf; fi'"
        tests:
          test_items:
            - flag: "root:root"
              compare:
                op: eq
                value: "root:root"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chown root:root $schedulerconf          
        scored: true

      - id: 1.4.7
        text: "Ensure that the etcd pod specification file permissions are set to
        644 or more restrictive (Scored)"
        audit: "/bin/sh -c 'if test -e $etcdconf; then stat -c permissions=%a $etcdconf; fi'"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chmod 644 $etcdconf          
        scored: true

      - id: 1.4.8
        text: "Ensure that the etcd pod specification file ownership is set to
        root:root (Scored)"
        audit: "/bin/sh -c 'if test -e $etcdconf; then stat -c %U:%G $etcdconf; fi'"
        tests:
          test_items:
            - flag: "root:root"
              compare:
                op: eq
                value: "root:root"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chown root:root $etcdconf          
        scored: true

      - id: 1.4.9
        text: "Ensure that the Container Network Interface file permissions are
        set to 644 or more restrictive (Not Scored)"
        audit: "stat -c permissions=%a <path/to/cni/files>"
        type: "manual"
        remediation: |
          [Manual test]
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chmod 644 <path/to/cni/files>          
        scored: true

      - id: 1.4.10
        text: "Ensure that the Container Network Interface file ownership is set
        to root:root (Not Scored)"
        audit: "stat -c %U:%G <path/to/cni/files>"
        type: "manual"
        remediation: |
          [Manual test]
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chown root:root <path/to/cni/files>          
        scored: true

      - id: 1.4.11
        text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Scored)"
        audit: ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%' | xargs stat -c permissions=%a
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                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 $etcdbin
          Run the below command (based on the etcd data directory found above). For example,
          chmod 700 /var/lib/etcd          
        scored: true

      - id: 1.4.12
        text: "Ensure that the etcd data directory ownership is set to etcd:etcd (Scored)"
        audit: ps -ef | grep $etcdbin | grep -- --data-dir | sed 's%.*data-dir[= ]\([^ ]*\).*%\1%' | xargs stat -c %U:%G
        tests:
          test_items:
            - flag: "etcd:etcd"
              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 $etcdbin
          Run the below command (based on the etcd data directory found above). For example,
          chown etcd:etcd /var/lib/etcd          
        scored: true

      - id: 1.4.13
        text: "Ensure that the admin.conf file permissions are set to 644 or
        more restrictive (Scored)"
        audit: "/bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c permissions=%a /etc/kubernetes/admin.conf; fi'"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chmod 644 /etc/kubernetes/admin.conf          
        scored: true

      - id: 1.4.14
        text: "Ensure that the admin.conf file ownership is set to root:root (Scored)"
        audit: "/bin/sh -c 'if test -e /etc/kubernetes/admin.conf; then stat -c %U:%G /etc/kubernetes/admin.conf; fi'"
        tests:
          test_items:
            - flag: "root:root"
              compare:
                op: eq
                value: "root:root"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the master node.
          For example,
          chown root:root /etc/kubernetes/admin.conf          
        scored: true

      - id: 1.4.15
        text: "Ensure that the scheduler.conf file permissions are set to 644 or
        more restrictive (Scored)"
        audit: "/bin/sh -c 'if test -e /etc/kubernetes/scheduler.conf; then stat -c permissions=%a /etc/kubernetes/scheduler.conf; fi'"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the
          master node. For example, chmod 644 /etc/kubernetes/scheduler.conf          
        scored: true

      - id: 1.4.16
        text: "Ensure that the scheduler.conf file ownership is set to root:root (Scored)"
        audit: "/bin/sh -c 'if test -e /etc/kubernetes/scheduler.conf; then stat -c %U:%G /etc/kubernetes/scheduler.conf; fi'"
        tests:
          test_items:
            - flag: "root:root"
              compare:
                op: eq
                value: "root:root"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the
          master node. For example, chown root:root /etc/kubernetes/scheduler.conf          
        scored: true

      - id: 1.4.17
        text: "Ensure that the controller-manager.conf file permissions are set
        to 644 or more restrictive (Scored)"
        audit: "/bin/sh -c 'if test -e /etc/kubernetes/controller-manager.conf; then stat -c permissions=%a /etc/kubernetes/controller-manager.conf; fi'"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the
          master node. For example, chmod 644 /etc/kubernetes/controller-manager.conf          
        scored: true

      - id: 1.4.18
        text: "Ensure that the controller-manager.conf file ownership is set to root:root (Scored)"
        audit: "/bin/sh -c 'if test -e /etc/kubernetes/controller-manager.conf; then stat -c %U:%G /etc/kubernetes/controller-manager.conf; fi'"
        tests:
          test_items:
            - flag: "root:root"
              compare:
                op: eq
                value: "root:root"
              set: true
        remediation: |
          Run the below command (based on the file location on your system) on the
          master node. For example, chown root:root /etc/kubernetes/controller-manager.conf          
        scored: true

      - id: 1.4.19
        text: "Ensure that the Kubernetes PKI directory and file ownership is set to root:root (Scored)"
        audit: "ls -laR /etc/kubernetes/pki/"
        type: "manual"
        tests:
          test_items:
            - flag: "root root"
              compare:
                op: eq
                value: "root root"
              set: true
        remediation: |
          [Manual test]
          Run the below command (based on the file location on your system) on the master node.
          For example, chown -R root:root /etc/kubernetes/pki/          
        scored: true

      - id: 1.4.20
        text: "Ensure that the Kubernetes PKI certificate file permissions are set to 644 or more restrictive (Scored)"
        audit: "stat -c %n\ %a /etc/kubernetes/pki/*.crt"
        type: "manual"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "644"
              set: true
        remediation: |
          [Manual test]
          Run the below command (based on the file location on your system) on the master node.
          For example, chmod -R 644 /etc/kubernetes/pki/*.crt          
        scored: true

      - id: 1.4.21
        text: "Ensure that the Kubernetes PKI key file permissions are set to 600 or more restrictive (Scored)"
        audit: "stat -c %n\ %a /etc/kubernetes/pki/*.key"
        type: "manual"
        tests:
          test_items:
            - flag: "permissions"
              compare:
                op: bitmask
                value: "600"
              set: true
        remediation: |
          [Manual test]
          Run the below command (based on the file location on your system) on the master node.
          For example, chmod -R 600 /etc/kubernetes/pki/*.key          
        scored: true

  - id: 1.5
    text: "etcd"
    checks:
      - id: 1.5.1
        text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $etcdbin | grep -v grep"
        tests:
          test_items:
            - flag: "--cert-file"
              set: true
            - flag: "--key-file"
              set: true
        remediation: |
          Follow the etcd service documentation and configure TLS encryption.
          Then, edit the etcd pod specification file $etcdconf on the
          master node and set the below parameters.
          --ca-file=</path/to/ca-file>
          --key-file=</path/to/key-file>          
        scored: true

      - id: 1.5.2
        text: "Ensure that the --client-cert-auth argument is set to true (Scored)"
        audit: "/bin/ps -ef | grep $etcdbin | grep -v grep"
        tests:
          test_items:
            - flag: "--client-cert-auth"
              compare:
                op: eq
                value: true
              set: true
        remediation: |
          Edit the etcd pod specification file $etcdconf on the master
          node and set the below parameter.
          --client-cert-auth="true"          
        scored: true

      - id: 1.5.3
        text: "Ensure that the --auto-tls argument is not set to true (Scored)"
        audit: "/bin/ps -ef | grep $etcdbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--auto-tls"
              set: false
            - flag: "--auto-tls"
              compare:
                op: eq
                value: false
        remediation: |
          Edit the etcd pod specification file $etcdconf on the master
          node and either remove the --auto-tls parameter or set it to false.
            --auto-tls=false          
        scored: true

      - id: 1.5.4
        text: "Ensure that the --peer-cert-file and --peer-key-file arguments are
        set as appropriate (Scored)"
        audit: "/bin/ps -ef | grep $etcdbin | grep -v grep"
        tests:
          bin_op: and
          test_items:
            - flag: "--peer-cert-file"
              set: true
            - flag: "--peer-key-file"
              set: true
        remediation: |
          Follow the etcd service documentation and configure peer TLS encryption as appropriate
          for your etcd cluster. Then, edit the etcd pod specification file $etcdconf on the
          master node and set the below parameters.
          --peer-client-file=</path/to/peer-cert-file>
          --peer-key-file=</path/to/peer-key-file>          
        scored: true

      - id: 1.5.5
        text: "Ensure that the --peer-client-cert-auth argument is set to true (Scored)"
        audit: "/bin/ps -ef | grep $etcdbin | grep -v grep"
        tests:
          test_items:
            - flag: "--peer-client-cert-auth"
              compare:
                op: eq
                value: true
              set: true
        remediation: |
          Edit the etcd pod specification file $etcdconf on the master
          node and set the below parameter.
          --peer-client-cert-auth=true          
        scored: true

      - id: 1.5.6
        text: "Ensure that the --peer-auto-tls argument is not set to true (Scored)"
        audit: "/bin/ps -ef | grep $etcdbin | grep -v grep"
        tests:
          bin_op: or
          test_items:
            - flag: "--peer-auto-tls"
              set: false
            - flag: "--peer-auto-tls"
              compare:
                op: eq
                value: false
              set: true
        remediation: |
          Edit the etcd pod specification file $etcdconf on the master
          node and either remove the --peer-auto-tls parameter or set it to false.
          --peer-auto-tls=false          
        scored: true

      - id: 1.5.7
        text: "Ensure that a unique Certificate Authority is used for etcd (Not Scored)"
        audit: "/bin/ps -ef | grep $etcdbin | grep -v grep"
        type: "manual"
        tests:
          test_items:
            - flag: "--trusted-ca-file"
              set: true
        remediation: |
          [Manual test]
          Follow the etcd documentation and create a dedicated certificate authority setup for the
          etcd service.
          Then, edit the etcd pod specification file $etcdconf on the
          master node and set the below parameter.
          --trusted-ca-file=</path/to/ca-file>          
        scored: false

  - id: 1.6
    text: "General Security Primitives"
    checks:
      - id: 1.6.1
        text: "Ensure that the cluster-admin role is only used where required (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Remove any unneeded clusterrolebindings :
          kubectl delete clusterrolebinding [name]          
        scored: false

      - id: 1.6.2
        text: "Create administrative boundaries between resources using namespaces (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Follow the documentation and create namespaces for objects in your deployment as you
          need them.          
        scored: false

      - id: 1.6.3
        text: "Create network segmentation using Network Policies (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Follow the documentation and create NetworkPolicy objects as you need them.          
        scored: false

      - id: 1.6.4
        text: "Ensure that the seccomp profile is set to docker/default in your pod
        definitions (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Seccomp is an alpha feature currently. By default, all alpha features are disabled. So, you
          would need to enable alpha features in the apiserver by passing "--feature-
          gates=AllAlpha=true" argument.
          Edit the $apiserverconf file on the master node and set the KUBE_API_ARGS
          parameter to "--feature-gates=AllAlpha=true"
          KUBE_API_ARGS="--feature-gates=AllAlpha=true"
          Based on your system, restart the kube-apiserver service. For example:
          systemctl restart kube-apiserver.service
          Use annotations to enable the docker/default seccomp profile in your pod definitions. An
          example is as below:
          apiVersion: v1
          kind: Pod
          metadata:
            name: trustworthy-pod
            annotations:
              seccomp.security.alpha.kubernetes.io/pod: docker/default
          spec:
            containers:
              - name: trustworthy-container
                image: sotrustworthy:latest          
        scored: false

      - id: 1.6.5
        text: "Apply Security Context to Your Pods and Containers (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Follow the Kubernetes documentation and apply security contexts to your pods. For a
          suggested list of security contexts, you may refer to the CIS Security Benchmark for Docker
          Containers.          
        scored: false

      - id: 1.6.6
        text: "Configure Image Provenance using ImagePolicyWebhook admission controller (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Follow the Kubernetes documentation and setup image provenance.          
        scored: false

      - id: 1.6.7
        text: "Configure Network policies as appropriate (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Follow the Kubernetes documentation and setup network policies as appropriate.
          For example, you could create a "default" isolation policy for a Namespace by creating a
          NetworkPolicy that selects all pods but does not allow any traffic:
          apiVersion: networking.k8s.io/v1
          kind: NetworkPolicy
          metadata:
            name: default-deny
          spec:
            podSelector:          
        scored: false

      - id: 1.6.8
        text: "Place compensating controls in the form of PSP and RBAC for
        privileged containers usage (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Follow Kubernetes documentation and setup PSP and RBAC authorization for your cluster.          
        scored: false

  - id: 1.7
    text: "PodSecurityPolicies"
    checks:
      - id: 1.7.1
        text: "Do not admit privileged containers (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Create a PSP as described in the Kubernetes documentation, ensuring that the .spec.privileged field is omitted or set to false.          
        scored: false

      - id: 1.7.2
        text: "Do not admit containers wishing to share the host process ID namespace (Scored)"
        type: "manual"
        remediation: |
         [Manual test]
         Create a PSP as described in the Kubernetes documentation, ensuring that the .spec.hostPID field is omitted or set to false.         
        scored: false

      - id: 1.7.3
        text: "Do not admit containers wishing to share the host IPC namespace (Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Create a PSP as described in the Kubernetes documentation, ensuring that the .spec.hostIPC field is omitted or set to false.          
        scored: false

      - id: 1.7.4
        text: "Do not admit containers wishing to share the host network namespace (Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Create a PSP as described in the Kubernetes documentation, ensuring that the .spec.hostNetwork field is omitted or set to false.          
        scored: false

      - id: 1.7.5
        text: " Do not admit containers with allowPrivilegeEscalation (Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Create a PSP as described in the Kubernetes documentation, ensuring that the .spec.allowPrivilegeEscalation field is omitted or set to false.          
        scored: false

      - id: 1.7.6
        text: "Do not admit root containers (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Create a PSP as described in the Kubernetes documentation, ensuring that the .spec.runAsUser.rule is set to either MustRunAsNonRoot or MustRunAs with the range of UIDs not including 0.          
        scored: false

      - id: 1.7.7
        text: "Do not admit containers with dangerous capabilities (Not Scored)"
        type: "manual"
        remediation: |
          [Manual test]
          Create a PSP as described in the Kubernetes documentation, ensuring that the .spec.requiredDropCapabilities is set to include either NET_RAW or ALL.          
        scored: false