diff --git a/cfg/1.13-json/config.yaml b/cfg/1.13-json/config.yaml new file mode 100644 index 0000000..1091b13 --- /dev/null +++ b/cfg/1.13-json/config.yaml @@ -0,0 +1,16 @@ +--- +# 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" diff --git a/cfg/1.13-json/node.yaml b/cfg/1.13-json/node.yaml new file mode 100644 index 0000000..f9f3963 --- /dev/null +++ b/cfg/1.13-json/node.yaml @@ -0,0 +1,480 @@ +--- +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 + $kubeletconf 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= + 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: + test_items: + - path: "{.streamingConnectionIdleTimeout}" + compare: + op: noteq + value: 0 + set: true + 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)" + audit: "cat $kubeletconf" + 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= + 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: "Ensure that the --cadvisor-port argument is set to 0 (Scored)" + audit: "cat $kubeletconf" + 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: true + + - 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: "{.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: "{.tlsCipherSuites}" + 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 + 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 + 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 + 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