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https://github.com/aquasecurity/kube-bench.git
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A few corrections to node tests. (#2)
* Add a few corrections. * Add a few corrections to node test file.
This commit is contained in:
Abubakr-Sadik Nii Nai Davis
Benji Visser
parent
934b4aef96
commit
b1369832bc
@ -38,8 +38,11 @@ groups:
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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 $kubeletconf
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on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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If using a Kubelet config file, edit the file to set authentication: anonymous: enabled to
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false .
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If using executable arguments, edit the kubelet service file
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$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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@ -57,8 +60,10 @@ groups:
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value: "AlwaysAllow"
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set: true
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remediation: |
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Edit the kubelet service file $kubeletconf
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on each worker node and set the below parameter in KUBELET_AUTHZ_ARGS variable.
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If using a Kubelet config file, edit the file to set authorization: mode to Webhook.
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If using executable arguments, edit the kubelet service file
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$kubeletconf 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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@ -73,8 +78,11 @@ groups:
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- flag: "--client-ca-file"
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set: true
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remediation: |
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Edit the kubelet service file $kubeletconf
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on each worker node and set the below parameter in KUBELET_AUTHZ_ARGS variable.
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If using a Kubelet config file, edit the file to set authentication: x509: clientCAFile to
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the location of the client CA file.
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If using command line arguments, edit the kubelet service file
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$kubeletconf 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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@ -92,8 +100,10 @@ groups:
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value: 0
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set: true
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remediation: |
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Edit the kubelet service file $kubeletconf
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on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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If using a Kubelet config file, edit the file to set readOnlyPort to 0 .
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If using command line arguments, edit the kubelet service file
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$kubeletconf 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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@ -111,8 +121,11 @@ groups:
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value: 0
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set: true
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remediation: |
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Edit the kubelet service file $kubeletconf
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on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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If using a Kubelet config file, edit the file to set streamingConnectionIdleTimeout to a
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value other than 0.
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If using command line arguments, edit the kubelet service file
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$kubeletconf 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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@ -130,8 +143,10 @@ groups:
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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 $kubeletconf
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on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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If using a Kubelet config file, edit the file to set protectKernelDefaults: true .
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If using command line arguments, edit the kubelet service file
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$kubeletconf 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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@ -150,8 +165,10 @@ groups:
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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 $kubeletconf
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on each worker node and remove the --make-iptables-util-chains argument from the
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If using a Kubelet config file, edit the file to set makeIPTablesUtilChains: true .
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If using command line arguments, edit the kubelet service file
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$kubeletconf 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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@ -185,8 +202,10 @@ groups:
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value: 0
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set: true
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remediation: |
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Edit the kubelet service file $kubeletconf
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on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable.
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If using a Kubelet config file, edit the file to set eventRecordQPS: 0 .
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If using command line arguments, edit the kubelet service file
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$kubeletconf 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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@ -197,19 +216,21 @@ groups:
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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 -ef | grep $kubeletbin | grep -v grep"
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tests:
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bin_op: and
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test_items:
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- flag: "--tls-cert-file"
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set: true
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- flag: "--tls-private-key-file"
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set: true
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remediation: |
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Follow the Kubernetes documentation and set up the TLS connection on the Kubelet.
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Then edit the kubelet service file /etc/systemd/system/kubelet.service.d/10-
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kubeadm.conf on each worker node and set the below parameters in
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KUBELET_CERTIFICATE_ARGS variable.
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If using a Kubelet config file, edit the file to set tlsCertFile to the location of the certificate
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file to use to identify this Kubelet, and tlsPrivateKeyFile to the location of the
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corresponding private key file.
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If using command line arguments, edit the kubelet service file
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$kubeletconf 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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--tls-private-key-
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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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@ -219,12 +240,15 @@ groups:
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text: "Ensure that the --cadvisor-port argument is set to 0 (Scored)"
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audit: "ps -ef | grep $kubeletbin | grep -v grep"
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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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Edit the kubelet service file $kubeletconf
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on each worker node and set the below parameter in KUBELET_CADVISOR_ARGS variable.
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@ -246,9 +270,11 @@ groups:
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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 /etc/systemd/system/kubelet.service.d/10-kubeadm.conf 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
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If using command line arguments, edit the kubelet service file $kubeletconf
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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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@ -282,7 +308,7 @@ groups:
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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 /etc/systemd/system/kubelet.service.d/10-kubeadm.conf on each worker node and set the below parameter.
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If using executable arguments, edit the kubelet service file $kubeletconf 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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