* starts fixes #353 * new approach to minize duplications * applied merged yaml files for v1.11 and v1.13 * yaml files json/params merged * fixes to remove double quotes from numbers and booleans * fixed bug * fixed certificate check * removed -json files * changes based on PR review * Update check/check_test.go Yay more tests! Co-Authored-By: Liz Rice <liz@lizrice.com> * changes as PR review * fixed bug when scored check is missing tests * attempt to improve the code * fixed list breaks * removes handleError function * Update check/check.go Accepting suggested log level. Co-Authored-By: Liz Rice <liz@lizrice.com>pull/451/head
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@ -1,16 +0,0 @@
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---
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# Config file for systems such as EKS where config is in JSON files
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# Master nodes are controlled by EKS and not user-accessible
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node:
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kubernetes:
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confs:
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- "/var/lib/kubelet/kubeconfig"
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kubeconfig:
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- "/var/lib/kubelet/kubeconfig"
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kubelet:
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defaultsvc: "/etc/systemd/system/kubelet.service"
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defaultkubeconfig: "/var/lib/kubelet/kubeconfig"
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proxy:
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defaultkubeconfig: "/var/lib/kubelet/kubeconfig"
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@ -1,523 +0,0 @@
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---
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controls:
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version: 1.11
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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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# This is one of those properties that can only be set as a command line argument.
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# To check if the property is set as expected, we need to parse the kubelet command
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# instead reading the Kubelet Configuration file.
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audit: "ps -fC $kubeletbin"
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tests:
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test_items:
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- flag: "--allow-privileged"
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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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Edit the kubelet service file $kubeletsvc
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on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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--allow-privileged=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 --anonymous-auth argument is set to false (Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.authentication.anonymous.enabled}"
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compare:
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op: eq
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value: false
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set authentication: anonymous: enabled to
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false .
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If using executable arguments, edit the kubelet service file
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$kubeletsvc 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: 2.1.3
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text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.authorization.mode}"
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compare:
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op: noteq
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value: "AlwaysAllow"
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set authorization: mode to Webhook.
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If using executable arguments, edit the kubelet service file
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$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: 2.1.4
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text: "Ensure that the --client-ca-file argument is set as appropriate (Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.authentication.x509.clientCAFile}"
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set authentication: x509: clientCAFile to
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the location of the client CA file.
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If using command line arguments, edit the kubelet service file
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$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: 2.1.5
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text: "Ensure that the --read-only-port argument is set to 0 (Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.readOnlyPort}"
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compare:
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op: eq
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value: "0"
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set readOnlyPort to 0 .
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If using command line arguments, edit the kubelet service file
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$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: 2.1.6
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text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Scored)"
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audit: "cat $kubeletconf"
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tests:
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bin_op: or
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test_items:
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- path: "{.streamingConnectionIdleTimeout}"
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set: false
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- path: "{.streamingConnectionIdleTimeout}"
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compare:
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op: noteq
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value: 0
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set streamingConnectionIdleTimeout to a
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value other than 0.
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If using command line arguments, edit the kubelet service file
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$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: 2.1.7
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text: "Ensure that the --protect-kernel-defaults argument is set to true (Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.protectKernelDefaults}"
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compare:
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op: eq
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value: true
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set protectKernelDefaults: true .
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If using command line arguments, edit the kubelet service file
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$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: 2.1.8
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text: "Ensure that the --make-iptables-util-chains argument is set to true (Scored)"
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audit: "cat $kubeletconf"
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tests:
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bin_op: or
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test_items:
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- path: "{.makeIPTablesUtilChains}"
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set: false
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- path: "{.makeIPTablesUtilChains}"
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compare:
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op: eq
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value: true
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set makeIPTablesUtilChains: true .
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If using command line arguments, edit the kubelet service file
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$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: 2.1.9
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text: "Ensure that the --hostname-override argument is not set (Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.hostnameOverride}"
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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: 2.1.10
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text: "Ensure that the --event-qps argument is set to 0 (Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.eventRecordQPS}"
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compare:
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op: eq
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value: 0
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set eventRecordQPS: 0 .
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If using command line arguments, edit the kubelet service file
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$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: 2.1.11
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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: "cat $kubeletconf"
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tests:
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bin_op: and
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test_items:
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- path: "{.tlsCertFile}"
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set: true
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- path: "{.tlsPrivateKeyFile}"
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set: true
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remediation: |
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If using a Kubelet config file, edit the file to set tlsCertFile to the location of the certificate
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file to use to identify this Kubelet, and tlsPrivateKeyFile to the location of the
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corresponding private key file.
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If using command line arguments, edit the kubelet service file
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$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: 2.1.12
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text: "Ensure that the --cadvisor-port argument is set to 0 (Scored)"
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audit: "cat $kubeletconf"
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tests:
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bin_op: or
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test_items:
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- path: "{.cadvisorPort}"
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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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- path: "{.cadvisorPort}"
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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 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: 2.1.13
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text: "Ensure that the --rotate-certificates argument is not set to false (Scored)"
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audit: "cat $kubeletconf"
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tests:
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bin_op: or
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test_items:
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- path: "{.rotateCertificates}"
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set: false
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- path: "{.rotateCertificates}"
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compare:
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op: noteq
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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 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.
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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: 2.1.14
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text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.featureGates.RotateKubeletServerCertificate}"
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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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Edit the kubelet service file $kubeletsvc
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on each worker node and set the below parameter in KUBELET_CERTIFICATE_ARGS variable.
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--feature-gates=RotateKubeletServerCertificate=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: 2.1.15
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text: "Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Not Scored)"
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audit: "cat $kubeletconf"
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tests:
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test_items:
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- path: "{.tlsCipherSuites}"
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compare:
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op: valid_elements
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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"
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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 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
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If using executable arguments, edit the kubelet service file $kubeletsvc on each worker node and set the below parameter.
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--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
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scored: false
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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
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more restrictive (Scored)"
|
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audit: "/bin/sh -c 'if test -e $kubeletkubeconfig; then stat -c %a $kubeletkubeconfig; fi'"
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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 (based on the file location on your system) on the each worker
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node. For example,
|
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chmod 644 $kubeletkubeconfig
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scored: true
|
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|
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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: "/bin/sh -c 'if test -e $kubeletkubeconfig; then stat -c %U:%G $kubeletkubeconfig; fi'"
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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 (based on the file location on your system) on the each worker
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node. For example,
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chown root:root $kubeletkubeconfig
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scored: true
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|
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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
|
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more restrictive (Scored)"
|
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audit: "/bin/sh -c 'if test -e $kubeletsvc; then stat -c %a $kubeletsvc; fi'"
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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 (based on the file location on your system) on the each worker
|
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node. For example,
|
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chmod 755 $kubeletsvc
|
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scored: true
|
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|
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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: "/bin/sh -c 'if test -e $kubeletsvc; then stat -c %U:%G $kubeletsvc; fi'"
|
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tests:
|
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test_items:
|
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- flag: "root:root"
|
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set: true
|
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remediation: |
|
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Run the below command (based on the file location on your system) on the each worker
|
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node. For example,
|
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chown root:root $kubeletsvc
|
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scored: true
|
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|
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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: "/bin/sh -c 'if test -e $proxykubeconfig; then stat -c %a $proxykubeconfig; fi'"
|
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tests:
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bin_op: or
|
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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
|
||||
|
||||
Note - This test reports "FAIL" if kube-proxy has been configured
|
||||
using a kubernetes configMap. Only under this situation, the "FAIL" can safely be ignored
|
||||
as the kube-proxy does not expose the kubeconfig file to the worker node.
|
||||
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
|
||||
|
||||
Note - This test reports "FAIL" if kube-proxy has been configured
|
||||
using a kubernetes configMap. Only under this situation, the "FAIL" can safely be ignored
|
||||
as the kube-proxy does not expose the kubeconfig file to the worker node.
|
||||
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: |
|
||||
[Manual test]
|
||||
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 $kubeletcafile; then stat -c %U:%G $kubeletcafile; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
set: true
|
||||
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
|
@ -1,2 +1,2 @@
|
||||
---
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
||||
## Version-specific settings that override the values in cfg/config.yaml
|
@ -1,16 +0,0 @@
|
||||
---
|
||||
# Config file for systems such as EKS where config is in JSON files
|
||||
# Master nodes are controlled by EKS and not user-accessible
|
||||
node:
|
||||
kubernetes:
|
||||
confs:
|
||||
- "/var/lib/kubelet/kubeconfig"
|
||||
kubeconfig:
|
||||
- "/var/lib/kubelet/kubeconfig"
|
||||
|
||||
kubelet:
|
||||
defaultsvc: "/etc/systemd/system/kubelet.service"
|
||||
defaultkubeconfig: "/var/lib/kubelet/kubeconfig"
|
||||
|
||||
proxy:
|
||||
defaultkubeconfig: "/var/lib/kubelet/kubeconfig"
|
@ -1,505 +0,0 @@
|
||||
---
|
||||
controls:
|
||||
version: 1.13
|
||||
id: 2
|
||||
text: "Worker Node Security Configuration"
|
||||
type: "node"
|
||||
groups:
|
||||
- id: 2.1
|
||||
text: "Kubelet"
|
||||
checks:
|
||||
- id: 2.1.1
|
||||
text: "Ensure that the --anonymous-auth argument is set to false (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.authentication.anonymous.enabled}"
|
||||
compare:
|
||||
op: eq
|
||||
value: false
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set authentication: anonymous: enabled to
|
||||
false .
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--anonymous-auth=false
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.2
|
||||
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.authorization.mode}"
|
||||
compare:
|
||||
op: nothave
|
||||
value: "AlwaysAllow"
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set authorization: mode to Webhook.
|
||||
If using executable arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--authorization-mode=Webhook
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.3
|
||||
text: "Ensure that the --client-ca-file argument is set as appropriate (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.authentication.x509.clientCAFile}"
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set authentication: x509: clientCAFile to
|
||||
the location of the client CA file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_AUTHZ_ARGS variable.
|
||||
--client-ca-file=<path/to/client-ca-file>
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.4
|
||||
text: "Ensure that the --read-only-port argument is set to 0 (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.readOnlyPort}"
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set readOnlyPort to 0 .
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--read-only-port=0
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.5
|
||||
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- path: "{.streamingConnectionIdleTimeout}"
|
||||
compare:
|
||||
op: noteq
|
||||
value: 0
|
||||
set: true
|
||||
- path: "{.streamingConnectionIdleTimeout}"
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set streamingConnectionIdleTimeout to a
|
||||
value other than 0.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--streaming-connection-idle-timeout=5m
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.6
|
||||
text: "Ensure that the --protect-kernel-defaults argument is set to true (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.protectKernelDefaults}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set protectKernelDefaults: true .
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--protect-kernel-defaults=true
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.7
|
||||
text: "Ensure that the --make-iptables-util-chains argument is set to true (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- path: "{.makeIPTablesUtilChains}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
- path: "{.makeIPTablesUtilChains}"
|
||||
set: false
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set makeIPTablesUtilChains: true .
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
remove the --make-iptables-util-chains argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.8
|
||||
text: "Ensure that the --hostname-override argument is not set (Scored)"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
audit: "ps -fC $kubeletbin"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "--hostname-override"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and remove the --hostname-override argument from the
|
||||
KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.9
|
||||
text: "Ensure that the --event-qps argument is set to 0 (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.eventRecordQPS}"
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set eventRecordQPS: 0 .
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
|
||||
--event-qps=0
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.10
|
||||
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
bin_op: and
|
||||
test_items:
|
||||
- path: "{.tlsCertFile}"
|
||||
set: true
|
||||
- path: "{.tlsPrivateKeyFile}"
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to set tlsCertFile to the location of the certificate
|
||||
file to use to identify this Kubelet, and tlsPrivateKeyFile to the location of the
|
||||
corresponding private key file.
|
||||
If using command line arguments, edit the kubelet service file
|
||||
$kubeletsvc on each worker node and
|
||||
set the below parameters in KUBELET_CERTIFICATE_ARGS variable.
|
||||
--tls-cert-file=<path/to/tls-certificate-file>
|
||||
file=<path/to/tls-key-file>
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.11
|
||||
text: "[DEPRECATED] Ensure that the --cadvisor-port argument is set to 0"
|
||||
# This is one of those properties that can only be set as a command line argument.
|
||||
# To check if the property is set as expected, we need to parse the kubelet command
|
||||
# instead reading the Kubelet Configuration file.
|
||||
audit: "ps -fC $kubeletbin"
|
||||
type: "skip"
|
||||
tests:
|
||||
bin_op: or
|
||||
test_items:
|
||||
- flag: "--cadvisor-port"
|
||||
compare:
|
||||
op: eq
|
||||
value: 0
|
||||
set: true
|
||||
- flag: "--cadvisor-port"
|
||||
set: false
|
||||
remediation: |
|
||||
Edit the kubelet service file $kubeletsvc
|
||||
on each worker node and set the below parameter in KUBELET_CADVISOR_ARGS variable.
|
||||
--cadvisor-port=0
|
||||
Based on your system, restart the kubelet service. For example:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: false
|
||||
|
||||
- id: 2.1.12
|
||||
text: "Ensure that the --rotate-certificates argument is not set to false (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.rotateCertificates}"
|
||||
compare:
|
||||
op: eq
|
||||
value: true
|
||||
set: true
|
||||
remediation: |
|
||||
If using a Kubelet config file, edit the file to add the line rotateCertificates: true.
|
||||
If using command line arguments, edit the kubelet service file $kubeletsvc
|
||||
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:
|
||||
systemctl daemon-reload
|
||||
systemctl restart kubelet.service
|
||||
scored: true
|
||||
|
||||
- id: 2.1.13
|
||||
text: "Ensure that the RotateKubeletServerCertificate argument is set to true (Scored)"
|
||||
audit: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{.featureGates.RotateKubeletServerCertificate}"
|
||||
compare:
|
||||
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: "cat $kubeletconf"
|
||||
tests:
|
||||
test_items:
|
||||
- path: "{range .tlsCipherSuites[:]}{}{','}{end}"
|
||||
compare:
|
||||
op: valid_elements
|
||||
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 $kubeletsvc 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
|
||||
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
|
||||
|
||||
Note - This test reports "FAIL" if kube-proxy has been configured
|
||||
using a kubernetes configMap. Only under this situation, the "FAIL" can safely be ignored
|
||||
as the kube-proxy does not expose the kubeconfig file to the worker node.
|
||||
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
|
||||
|
||||
Note - This test reports "FAIL" if kube-proxy has been configured
|
||||
using a kubernetes configMap. Only under this situation, the "FAIL" can safely be ignored
|
||||
as the kube-proxy does not expose the kubeconfig file to the worker node.
|
||||
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: |
|
||||
[Manual test]
|
||||
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 $kubeletcafile; then stat -c %U:%G $kubeletcafile; fi'"
|
||||
tests:
|
||||
test_items:
|
||||
- flag: "root:root"
|
||||
compare:
|
||||
op: eq
|
||||
value: root:root
|
||||
set: true
|
||||
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
|
File diff suppressed because it is too large
Load Diff
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Reference in new issue