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kube-bench on AKS 1.15.7
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kube-bench: (master u=) $ kubectl node-shell aks-cpuworkers-18754171-vmss000000 | |
spawning "nsenter-kru76j" on "aks-cpuworkers-18754171-vmss000000" | |
If you don't see a command prompt, try pressing enter. | |
root@aks-cpuworkers-18754171-vmss000000:/# | |
root@aks-cpuworkers-18754171-vmss000000:/# docker run --rm -v `pwd`:/host aquasec/kube-bench:latest install | |
=============================================== | |
kube-bench is now installed on your host | |
Run ./kube-bench to perform a security check | |
=============================================== | |
root@aks-cpuworkers-18754171-vmss000000:/# ./kube-bench node | |
[INFO] 2 Worker Node Security Configuration | |
[INFO] 2.1 Kubelet | |
[FAIL] 2.1.1 Ensure that the --allow-privileged argument is set to false (Scored) | |
[PASS] 2.1.2 Ensure that the --anonymous-auth argument is set to false (Scored) | |
[PASS] 2.1.3 Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored) | |
[PASS] 2.1.4 Ensure that the --client-ca-file argument is set as appropriate (Scored) | |
[FAIL] 2.1.5 Ensure that the --read-only-port argument is set to 0 (Scored) | |
[PASS] 2.1.6 Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Scored) | |
[PASS] 2.1.7 Ensure that the --protect-kernel-defaults argument is set to true (Scored) | |
[PASS] 2.1.8 Ensure that the --make-iptables-util-chains argument is set to true (Scored) | |
[PASS] 2.1.9 Ensure that the --hostname-override argument is not set (Scored) | |
[PASS] 2.1.10 Ensure that the --event-qps argument is set to 0 (Scored) | |
[PASS] 2.1.11 Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Scored) | |
[PASS] 2.1.12 Ensure that the --cadvisor-port argument is set to 0 (Scored) | |
[PASS] 2.1.13 Ensure that the --rotate-certificates argument is not set to false (Scored) | |
[PASS] 2.1.14 Ensure that the RotateKubeletServerCertificate argument is set to true (Scored) | |
[PASS] 2.1.15 Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers (Not Scored) | |
[INFO] 2.2 Configuration Files | |
[PASS] 2.2.1 Ensure that the kubelet.conf file permissions are set to 644 or more restrictive (Scored) | |
[PASS] 2.2.2 Ensure that the kubelet.conf file ownership is set to root:root (Scored) | |
[PASS] 2.2.3 Ensure that the kubelet service file permissions are set to 644 or more restrictive (Scored) | |
[PASS] 2.2.4 Ensure that the kubelet service file ownership is set to root:root (Scored) | |
[PASS] 2.2.5 Ensure that the proxy kubeconfig file permissions are set to 644 or more restrictive (Scored) | |
[PASS] 2.2.6 Ensure that the proxy kubeconfig file ownership is set to root:root (Scored) | |
[WARN] 2.2.7 Ensure that the certificate authorities file permissions are set to 644 or more restrictive (Scored) | |
[PASS] 2.2.8 Ensure that the client certificate authorities file ownership is set to root:root (Scored) | |
[PASS] 2.2.9 Ensure that the kubelet configuration file ownership is set to root:root (Scored) | |
[PASS] 2.2.10 Ensure that the kubelet configuration file has permissions set to 644 or more restrictive (Scored) | |
== Remediations == | |
2.1.1 Edit the kubelet service file /etc/systemd/system/kubelet.service | |
on each worker node and set the below parameter in KUBELET_SYSTEM_PODS_ARGS variable. | |
--allow-privileged=false | |
Based on your system, restart the kubelet service. For example: | |
systemctl daemon-reload | |
systemctl restart kubelet.service | |
2.1.5 If using a Kubelet config file, edit the file to set readOnlyPort to 0 . | |
If using command line arguments, edit the kubelet service file | |
/etc/systemd/system/kubelet.service 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 | |
2.2.7 Run the following command to modify the file permissions of the --client-ca-file | |
chmod 644 <filename> | |
== Summary == | |
22 checks PASS | |
2 checks FAIL | |
1 checks WARN | |
0 checks INFO | |
root@aks-cpuworkers-18754171-vmss000000:/# |
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