mirror of
https://github.com/aquasecurity/kube-bench.git
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377 lines
11 KiB
YAML
377 lines
11 KiB
YAML
---
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controls:
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id: 2
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text: "Worker Node Security Configuration"
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type: "node"
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groups:
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- id: 2.1
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text: "Kubelet"
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checks:
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- id: 2.1.1
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text: "Ensure that the --allow-privileged argument is set to false (Scored)"
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type: "skip"
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scored: true
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- id: 2.1.2
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text: "Ensure that the --anonymous-auth argument is set to false (Scored)"
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type: "skip"
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scored: true
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- id: 2.1.3
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text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored)"
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audit: "grep -A1 authorization-mode /etc/origin/node/node-config.yaml"
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tests:
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bin_op: or
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test_items:
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- flag: "authorization-mode"
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set: false
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- flag: "authorization-mode: Webhook"
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compare:
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op: has
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value: "Webhook"
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set: true
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml and remove authorization-mode under
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kubeletArguments in /etc/origin/node/node-config.yaml or set it to "Webhook".
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scored: true
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- id: 2.1.4
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text: "Ensure that the --client-ca-file argument is set as appropriate (Scored)"
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audit: "grep -A1 client-ca-file /etc/origin/node/node-config.yaml"
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tests:
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test_items:
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- flag: "client-ca-file"
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set: false
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml and remove any configuration returned by the following:
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grep -A1 client-ca-file /etc/origin/node/node-config.yaml
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Reset to the OpenShift default.
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See https://github.com/openshift/openshift-ansible/blob/release-3.10/roles/openshift_node_group/templates/node-config.yaml.j2#L65
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The config file does not have this defined in kubeletArgument, but in PodManifestConfig.
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scored: true
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- id: 2.1.5
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text: "Ensure that the --read-only-port argument is set to 0 (Scored)"
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audit: "grep -A1 read-only-port /etc/origin/node/node-config.yaml"
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tests:
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bin_op: or
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test_items:
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- flag: "read-only-port"
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set: false
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- flag: "read-only-port: 0"
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compare:
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op: has
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value: "0"
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set: true
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml and removed so that the OpenShift default is applied.
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scored: true
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- id: 2.1.6
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text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Scored)"
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audit: "grep -A1 streaming-connection-idle-timeout /etc/origin/node/node-config.yaml"
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tests:
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bin_op: or
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test_items:
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- flag: "streaming-connection-idle-timeout"
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set: false
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- flag: "0"
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set: false
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml and set the streaming-connection-timeout
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value like the following in node-config.yaml.
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kubeletArguments:
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streaming-connection-idle-timeout:
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- "5m"
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scored: true
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- id: 2.1.7
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text: "Ensure that the --protect-kernel-defaults argument is set to true (Scored)"
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type: "skip"
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scored: true
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- id: 2.1.8
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text: "Ensure that the --make-iptables-util-chains argument is set to true (Scored)"
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audit: "grep -A1 make-iptables-util-chains /etc/origin/node/node-config.yaml"
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tests:
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bin_op: or
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test_items:
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- flag: "make-iptables-util-chains"
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set: false
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- flag: "make-iptables-util-chains: true"
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compare:
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op: has
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value: "true"
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set: true
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml and reset make-iptables-util-chains to the OpenShift
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default value of true.
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scored: true
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id: 2.1.9
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text: "Ensure that the --keep-terminated-pod-volumeskeep-terminated-pod-volumes argument is set to false (Scored)"
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audit: "grep -A1 keep-terminated-pod-volumes /etc/origin/node/node-config.yaml"
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tests:
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test_items:
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- flag: "keep-terminated-pod-volumes: false"
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compare:
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op: has
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value: "false"
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set: true
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remediation: |
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Reset to the OpenShift defaults
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scored: true
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- id: 2.1.10
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text: "Ensure that the --hostname-override argument is not set (Scored)"
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type: "skip"
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scored: true
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- id: 2.1.11
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text: "Ensure that the --event-qps argument is set to 0 (Scored)"
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audit: "grep -A1 event-qps /etc/origin/node/node-config.yaml"
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tests:
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bin_op: or
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test_items:
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- flag: "event-qps"
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set: false
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- flag: "event-qps: 0"
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compare:
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op: has
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value: "0"
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set: true
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml set the event-qps argument to 0 in
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the kubeletArguments section of.
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scored: true
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- id: 2.1.12
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text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Scored)"
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audit: "grep -A1 cert-dir /etc/origin/node/node-config.yaml"
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tests:
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test_items:
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- flag: "/etc/origin/node/certificates"
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compare:
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op: has
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value: "/etc/origin/node/certificates"
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set: true
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remediation: |
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Reset to the OpenShift default values.
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scored: true
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- id: 2.1.13
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text: "Ensure that the --cadvisor-port argument is set to 0 (Scored)"
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audit: "grep -A1 cadvisor-port /etc/origin/node/node-config.yaml"
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tests:
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bin_op: or
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test_items:
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- flag: "cadvisor-port"
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set: false
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- flag: "cadvisor-port: 0"
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compare:
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op: has
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value: "0"
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set: true
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml and remove the cadvisor-port flag
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if it is set in the kubeletArguments section.
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scored: true
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- id: 2.1.14
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text: "Ensure that the RotateKubeletClientCertificate argument is not set to false (Scored)"
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audit: "grep -B1 RotateKubeletClientCertificate=true /etc/origin/node/node-config.yaml"
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tests:
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test_items:
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- flag: "RotateKubeletClientCertificate=true"
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compare:
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op: has
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value: "true"
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set: true
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml and set RotateKubeletClientCertificate to true.
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scored: true
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- id: 2.1.15
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text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Scored)"
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audit: "grep -B1 RotateKubeletServerCertificate=true /etc/origin/node/node-config.yaml"
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test:
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test_items:
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- flag: "RotateKubeletServerCertificate=true"
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compare:
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op: has
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value: "true"
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set: true
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remediation: |
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Edit the Openshift node config file /etc/origin/node/node-config.yaml and set RotateKubeletServerCertificate to true.
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scored: true
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- id: 2.2
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text: "Configuration Files"
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checks:
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- id: 2.2.1
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text: "Ensure that the kubelet.conf file permissions are set to 644 or more restrictive (Scored)"
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audit: "stat -c %a /etc/origin/node/node.kubeconfig"
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tests:
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bin_op: or
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test_items:
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- flag: "644"
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compare:
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op: eq
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value: "644"
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set: true
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- flag: "640"
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compare:
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op: eq
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value: "640"
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set: true
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- flag: "600"
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compare:
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op: eq
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value: "600"
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set: true
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remediation: |
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Run the below command on each worker node.
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chmod 644 /etc/origin/node/node.kubeconfig
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scored: true
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- id: 2.2.2
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text: "Ensure that the kubelet.conf file ownership is set to root:root (Scored)"
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audit: "stat -c %U:%G /etc/origin/node/node.kubeconfig"
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tests:
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test_items:
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- flag: "root:root"
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compare:
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op: eq
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value: root:root
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set: true
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remediation: |
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Run the below command on each worker node.
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chown root:root /etc/origin/node/node.kubeconfig
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scored: true
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- id: 2.2.3
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text: "Ensure that the kubelet service file permissions are set to 644 or more restrictive (Scored)"
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audit: "stat -c %a /etc/systemd/system/atomic-openshift-node.service"
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tests:
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bin_op: or
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test_items:
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- flag: "644"
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compare:
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op: eq
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value: "644"
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set: true
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- flag: "640"
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compare:
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op: eq
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value: "640"
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set: true
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- flag: "600"
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compare:
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op: eq
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value: "600"
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set: true
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remediation: |
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Run the below command on each worker node.
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chmod 644 /etc/systemd/system/atomic-openshift-node.service
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scored: true
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- id: 2.2.4
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text: "Ensure that the kubelet service file ownership is set to root:root (Scored)"
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audit: "stat -c %U:%G /etc/systemd/system/atomic-openshift-node.service"
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tests:
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test_items:
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- flag: "root:root"
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compare:
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op: eq
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value: root:root
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set: true
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remediation: |
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Run the below command on each worker node.
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chown root:root /etc/systemd/system/atomic-openshift-node.service
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scored: true
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- id: 2.2.5
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text: "Ensure that the proxy kubeconfig file permissions are set to 644 or more restrictive (Scored)"
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audit: "stat -c %a /etc/origin/node/node.kubeconfig"
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tests:
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bin_op: or
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test_items:
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- flag: "644"
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compare:
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op: eq
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value: "644"
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set: true
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- flag: "640"
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compare:
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op: eq
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value: "640"
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set: true
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- flag: "600"
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compare:
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op: eq
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value: "600"
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set: true
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remediation: |
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Run the below command on each worker node.
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chmod 644 /etc/origin/node/node.kubeconfig
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scored: true
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- id: 2.2.6
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text: "Ensure that the proxy kubeconfig file ownership is set to root:root (Scored)"
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audit: "stat -c %U:%G /etc/origin/node/node.kubeconfig"
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tests:
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test_items:
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- flag: "root:root"
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compare:
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op: eq
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value: root:root
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set: true
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remediation: |
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Run the below command on each worker node.
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chown root:root /etc/origin/node/node.kubeconfig
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scored: true
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- id: 2.2.7
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text: "Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Scored)"
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audit: "stat -c %a /etc/origin/node/client-ca.crt"
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tests:
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bin_op: or
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test_items:
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- flag: "644"
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compare:
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op: eq
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value: "644"
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set: true
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- flag: "640"
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compare:
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op: eq
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value: "640"
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set: true
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- flag: "600"
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compare:
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op: eq
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value: "600"
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set: true
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remediation: |
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Run the below command on each worker node.
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chmod 644 /etc/origin/node/client-ca.crt
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scored: true
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- id: 2.2.8
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text: "Ensure that the client certificate authorities file ownership is set to root:root (Scored)"
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audit: "stat -c %U:%G /etc/origin/node/client-ca.crt"
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tests:
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test_items:
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- flag: "root:root"
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compare:
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op: eq
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value: root:root
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set: true
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remediation: |
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Run the below command on each worker node.
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chown root:root /etc/origin/node/client-ca.crt
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scored: true
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