Liz Rice
5 years ago
committed by
GitHub
commit
9246be924d
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---
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## Controls Files.
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# These are YAML files that hold all the details for running checks.
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#
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## Uncomment to use different control file paths.
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# masterControls: ./cfg/master.yaml
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# nodeControls: ./cfg/node.yaml
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# federatedControls: ./cfg/federated.yaml
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master:
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apiserver:
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defaultconf: /etc/kubernetes/manifests/kube-apiserver.yaml
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scheduler:
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defaultconf: /etc/kubernetes/manifests/kube-scheduler.yaml
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controllermanager:
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defaultconf: /etc/kubernetes/manifests/kube-controller-manager.yaml
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etcd:
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defaultconf: /etc/kubernetes/manifests/etcd.yaml
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node:
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kubelet:
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defaultconf: /etc/kubernetes/kubelet.conf
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defaultsvc: /etc/systemd/system/kubelet.service.d/10-kubeadm.conf
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proxy:
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defaultconf: /etc/kubernetes/addons/kube-proxy-daemonset.yaml
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File diff suppressed because it is too large
Load Diff
@ -0,0 +1,480 @@
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---
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controls:
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version: 1.13
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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 --anonymous-auth argument is set to false (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--anonymous-auth"
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compare:
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op: eq
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value: false
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set authentication: anonymous: enabled to
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false .
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If using executable arguments, edit the kubelet service file
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$kubeletconf on each worker node and
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set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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--anonymous-auth=false
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.2
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text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--authorization-mode"
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compare:
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op: nothave
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value: "AlwaysAllow"
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set authorization: mode to Webhook.
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If using executable arguments, edit the kubelet service file
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$kubeletsvc on each worker node and
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set the below parameter in KUBELET_AUTHZ_ARGS variable.
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--authorization-mode=Webhook
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.3
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text: "Ensure that the --client-ca-file argument is set as appropriate (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--client-ca-file"
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set authentication: x509: clientCAFile to
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the location of the client CA file.
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If using command line arguments, edit the kubelet service file
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$kubeletsvc on each worker node and
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set the below parameter in KUBELET_AUTHZ_ARGS variable.
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--client-ca-file=<path/to/client-ca-file>
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.4
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text: "Ensure that the --read-only-port argument is set to 0 (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--read-only-port"
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compare:
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op: eq
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value: 0
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set readOnlyPort to 0 .
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If using command line arguments, edit the kubelet service file
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$kubeletsvc on each worker node and
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set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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--read-only-port=0
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.5
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text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--streaming-connection-idle-timeout"
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compare:
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op: noteq
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value: 0
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set streamingConnectionIdleTimeout to a
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value other than 0.
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If using command line arguments, edit the kubelet service file
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$kubeletsvc on each worker node and
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set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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--streaming-connection-idle-timeout=5m
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.6
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text: "Ensure that the --protect-kernel-defaults argument is set to true (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--protect-kernel-defaults"
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compare:
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op: eq
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value: true
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set protectKernelDefaults: true .
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If using command line arguments, edit the kubelet service file
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$kubeletsvc on each worker node and
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set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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--protect-kernel-defaults=true
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.7
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text: "Ensure that the --make-iptables-util-chains argument is set to true (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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bin_op: or
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test_items:
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- flag: "--make-iptables-util-chains"
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compare:
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op: eq
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value: true
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set: true
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- flag: "--make-iptables-util-chains"
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set: false
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remediation: |
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If using a Kubelet config file, edit the file to set makeIPTablesUtilChains: true .
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If using command line arguments, edit the kubelet service file
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$kubeletsvc on each worker node and
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remove the --make-iptables-util-chains argument from the
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KUBELET_SYSTEM_PODS_ARGS variable.
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.8
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text: "Ensure that the --hostname-override argument is not set (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--hostname-override"
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set: false
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remediation: |
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Edit the kubelet service file $kubeletsvc
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on each worker node and remove the --hostname-override argument from the
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KUBELET_SYSTEM_PODS_ARGS variable.
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.9
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text: "Ensure that the --event-qps argument is set to 0 (Scored)"
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--event-qps"
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compare:
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op: eq
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value: 0
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set eventRecordQPS: 0 .
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If using command line arguments, edit the kubelet service file
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$kubeletsvc on each worker node and
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set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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--event-qps=0
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.10
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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: "ps -fC $kubeletbin"
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tests:
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bin_op: and
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test_items:
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- flag: "--tls-cert-file"
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set: true
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- flag: "--tls-private-key-file"
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set tlsCertFile to the location of the certificate
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file to use to identify this Kubelet, and tlsPrivateKeyFile to the location of the
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corresponding private key file.
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If using command line arguments, edit the kubelet service file
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$kubeletsvc on each worker node and
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set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
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--tls-cert-file=<path/to/tls-certificate-file>
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file=<path/to/tls-key-file>
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Based on your system, restart the kubelet service. For example:
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systemctl daemon-reload
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systemctl restart kubelet.service
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scored: true
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- id: 2.1.11
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text: "Ensure that the --cadvisor-port argument is set to 0 (Scored)"
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audit: "ps -fC $kubeletbin"
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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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compare:
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op: eq
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value: 0
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set: true
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- flag: "--cadvisor-port"
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set: false
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remediation: |
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||||||
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Edit the kubelet service file $kubeletsvc
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on each worker node and set the below parameter in KUBELET_CADVISOR_ARGS variable.
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--cadvisor-port=0
|
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|
Based on your system, restart the kubelet service. For example:
|
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|
systemctl daemon-reload
|
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|
systemctl restart kubelet.service
|
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scored: true
|
||||||
|
|
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- id: 2.1.12
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text: "Ensure that the --rotate-certificates argument is not set to false (Scored)"
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audit: "ps -fC $kubeletbin"
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|
tests:
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test_items:
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- flag: "--rotate-certificates"
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compare:
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op: eq
|
||||||
|
value: true
|
||||||
|
set: true
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remediation: |
|
||||||
|
If using a Kubelet config file, edit the file to add the line rotateCertificates: true.
|
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|
If using command line arguments, edit the kubelet service file $kubeletsvc
|
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on each worker node and add --rotate-certificates=true argument to the KUBELET_CERTIFICATE_ARGS variable.
|
||||||
|
Based on your system, restart the kubelet service. For example:
|
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|
systemctl daemon-reload
|
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|
systemctl restart kubelet.service
|
||||||
|
scored: true
|
||||||
|
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||||||
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- id: 2.1.13
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text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Scored)"
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|
audit: "ps -fC $kubeletbin"
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|
tests:
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|
test_items:
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|
- flag: "RotateKubeletServerCertificate"
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|
compare:
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|
op: eq
|
||||||
|
value: true
|
||||||
|
set: true
|
||||||
|
remediation: |
|
||||||
|
Edit the kubelet service file $kubeletsvc
|
||||||
|
on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
|
||||||
|
--feature-gates=RotateKubeletServerCertificate=true
|
||||||
|
Based on your system, restart the kubelet service. For example:
|
||||||
|
systemctl daemon-reload
|
||||||
|
systemctl restart kubelet.service
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.1.14
|
||||||
|
text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Not Scored)"
|
||||||
|
audit: "ps -fC $kubeletbin"
|
||||||
|
tests:
|
||||||
|
test_items:
|
||||||
|
- flag: "--tls-cipher-suites"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
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: |
|
||||||
|
If using a Kubelet config file, edit the file to set TLSCipherSuites: to 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
|
||||||
|
If using executable arguments, edit the kubelet service file $kubeletconf on each worker 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: 2.2
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||||||
|
text: "Configuration Files"
|
||||||
|
checks:
|
||||||
|
- id: 2.2.1
|
||||||
|
text: "Ensure that the kubelet.conf file permissions are set to 644 or
|
||||||
|
more restrictive (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $kubeletkubeconfig; then stat -c %a $kubeletkubeconfig; fi'"
|
||||||
|
tests:
|
||||||
|
bin_op: or
|
||||||
|
test_items:
|
||||||
|
- flag: "644"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "644"
|
||||||
|
set: true
|
||||||
|
- flag: "640"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "640"
|
||||||
|
set: true
|
||||||
|
- flag: "600"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "600"
|
||||||
|
set: true
|
||||||
|
remediation: |
|
||||||
|
Run the below command (based on the file location on your system) on the each worker
|
||||||
|
node. For example,
|
||||||
|
chmod 644 $kubeletkubeconfig
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.2
|
||||||
|
text: "Ensure that the kubelet.conf file ownership is set to root:root (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; 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 each worker
|
||||||
|
node. For example,
|
||||||
|
chown root:root $kubeletkubeconfig
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.3
|
||||||
|
text: "Ensure that the kubelet service file permissions are set to 644 or
|
||||||
|
more restrictive (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $kubeletsvc; then stat -c %a $kubeletsvc; fi'"
|
||||||
|
tests:
|
||||||
|
bin_op: or
|
||||||
|
test_items:
|
||||||
|
- flag: "644"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: 644
|
||||||
|
set: true
|
||||||
|
- flag: "640"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "640"
|
||||||
|
set: true
|
||||||
|
- flag: "600"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "600"
|
||||||
|
set: true
|
||||||
|
remediation: |
|
||||||
|
Run the below command (based on the file location on your system) on the each worker
|
||||||
|
node. For example,
|
||||||
|
chmod 755 $kubeletsvc
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.4
|
||||||
|
text: "Ensure that the kubelet service file ownership is set to root:root (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'"
|
||||||
|
tests:
|
||||||
|
test_items:
|
||||||
|
- flag: "root:root"
|
||||||
|
set: true
|
||||||
|
remediation: |
|
||||||
|
Run the below command (based on the file location on your system) on the each worker
|
||||||
|
node. For example,
|
||||||
|
chown root:root $kubeletsvc
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.5
|
||||||
|
text: "Ensure that the proxy kubeconfig file permissions are set to 644 or more restrictive (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $proxykubeconfig; then stat -c %a $proxykubeconfig; fi'"
|
||||||
|
tests:
|
||||||
|
bin_op: or
|
||||||
|
test_items:
|
||||||
|
- flag: "644"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "644"
|
||||||
|
set: true
|
||||||
|
- flag: "640"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "640"
|
||||||
|
set: true
|
||||||
|
- flag: "600"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "600"
|
||||||
|
set: true
|
||||||
|
remediation: |
|
||||||
|
Run the below command (based on the file location on your system) on the each worker
|
||||||
|
node. For example,
|
||||||
|
chmod 644 $proxykubeconfig
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.6
|
||||||
|
text: "Ensure that the proxy kubeconfig file ownership is set to root:root (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $proxykubeconfig; then stat -c %U:%G $proxykubeconfig; fi'"
|
||||||
|
tests:
|
||||||
|
test_items:
|
||||||
|
- flag: "root:root"
|
||||||
|
set: true
|
||||||
|
remediation: |
|
||||||
|
Run the below command (based on the file location on your system) on the each worker
|
||||||
|
node. For example,
|
||||||
|
chown root:root $proxykubeconfig
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.7
|
||||||
|
text: "Ensure that the certificate authorities file permissions are set to
|
||||||
|
644 or more restrictive (Scored)"
|
||||||
|
type: manual
|
||||||
|
remediation: |
|
||||||
|
Run the following command to modify the file permissions of the --client-ca-file
|
||||||
|
chmod 644 <filename>
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.8
|
||||||
|
text: "Ensure that the client certificate authorities file ownership is set to root:root (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $ca-file; then stat -c %U:%G $ca-file; fi'"
|
||||||
|
type: manual
|
||||||
|
remediation: |
|
||||||
|
Run the following command to modify the ownership of the --client-ca-file .
|
||||||
|
chown root:root <filename>
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.9
|
||||||
|
text: "Ensure that the kubelet configuration file ownership is set to root:root (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $kubeletconf; then stat -c %U:%G $kubeletconf; fi'"
|
||||||
|
tests:
|
||||||
|
test_items:
|
||||||
|
- flag: "root:root"
|
||||||
|
set: true
|
||||||
|
remediation: |
|
||||||
|
Run the following command (using the config file location identied in the Audit step)
|
||||||
|
chown root:root $kubeletconf
|
||||||
|
scored: true
|
||||||
|
|
||||||
|
- id: 2.2.10
|
||||||
|
text: "Ensure that the kubelet configuration file has permissions set to 644 or more restrictive (Scored)"
|
||||||
|
audit: "/bin/sh -c 'if test -e $kubeletconf; then stat -c %a $kubeletconf; fi'"
|
||||||
|
tests:
|
||||||
|
bin_op: or
|
||||||
|
test_items:
|
||||||
|
- flag: "644"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "644"
|
||||||
|
set: true
|
||||||
|
- flag: "640"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "640"
|
||||||
|
set: true
|
||||||
|
- flag: "600"
|
||||||
|
compare:
|
||||||
|
op: eq
|
||||||
|
value: "600"
|
||||||
|
set: true
|
||||||
|
remediation: |
|
||||||
|
Run the following command (using the config file location identied in the Audit step)
|
||||||
|
chmod 644 $kubeletconf
|
||||||
|
scored: true
|
||||||
Loading…
Reference in new issue