mirror of
https://github.com/aquasecurity/kube-bench.git
synced 2024-12-12 01:38:14 +00:00
371 lines
13 KiB
YAML
371 lines
13 KiB
YAML
|
---
|
||
|
|
controls:
|
||
|
|
version: 1.7
|
||
|
|
id: 2
|
||
|
|
text: "Worker Node Security Configuration"
|
||
|
|
type: "node"
|
||
|
|
groups:
|
||
|
|
- id: 2.1
|
||
|
|
text: "Kubelet"
|
||
|
|
checks:
|
||
|
|
- id: 2.1.1
|
||
|
|
text: "Ensure that the --allow-privileged argument is set to false (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--allow-privileged"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: false
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBE_ALLOW_PRIV
|
||
|
|
parameter to \"--allow-privileged=false\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.2
|
||
|
|
text: "Ensure that the --anonymous-auth argument is set to false (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--anonymous-auth"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: false
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on the master node and set the
|
||
|
|
KUBELET_ARGS parameter to \"--anonymous-auth=false\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.3
|
||
|
|
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--authorization-mode"
|
||
|
|
compare:
|
||
|
|
op: nothave
|
||
|
|
value: "AlwaysAllow"
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the
|
||
|
|
KUBELET_ARGS parameter to \"--authorization-mode=Webhook\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.4
|
||
|
|
text: "Ensure that the --client-ca-file argument is set as appropriate (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--client-ca-file"
|
||
|
|
set: true
|
||
|
|
remediation: "Follow the Kubernetes documentation and setup the TLS connection between
|
||
|
|
the apiserver and kubelets. Then, edit the $kubeletconf file on each node
|
||
|
|
and set the KUBELET_ARGS parameter to \"--client-ca-file=<path/to/client-ca-file>\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.5
|
||
|
|
text: "Ensure that the --read-only-port argument is set to 0 (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--read-only-port"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: 0
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_ARGS
|
||
|
|
parameter to \"--read-only-port=0\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.6
|
||
|
|
text: "Ensure that the --streaming-connection-idle-timeout argument is not set to 0 (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
bin_op: or
|
||
|
|
test_items:
|
||
|
|
- flag: "--streaming-connection-idle-timeout"
|
||
|
|
compare:
|
||
|
|
op: noteq
|
||
|
|
value: 0
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_ARGS
|
||
|
|
parameter to \"--streaming-connection-idle-timeout=<appropriate-timeout-value>\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.7
|
||
|
|
text: "Ensure that the --protect-kernel-defaults argument is set to true (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--protect-kernel-defaults"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: true
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_ARGS
|
||
|
|
parameter to \"--protect-kernel-defaults=true\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.8
|
||
|
|
text: "Ensure that the --make-iptables-util-chains argument is set to true (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
bin_op: or
|
||
|
|
test_items:
|
||
|
|
- flag: "--make-iptables-util-chains"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: true
|
||
|
|
set: true
|
||
|
|
- flag: "--make-iptables-util-chains"
|
||
|
|
set: false
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and remove the
|
||
|
|
--make-iptables-util-chains argument from the KUBELET_ARGS parameter."
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.9
|
||
|
|
text: "Ensure that the --keep-terminated-pod-volumes argument is set to false (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--keep-terminated-pod-volumes"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: false
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_ARGS
|
||
|
|
parameter to \"--keep-terminated-pod-volumes=false\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.10
|
||
|
|
text: "Ensure that the --hostname-override argument is not set (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--hostname-override"
|
||
|
|
set: false
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_HOSTNAME
|
||
|
|
parameter to \"\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.11
|
||
|
|
text: "Ensure that the --event-qps argument is set to 0 (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--event-qps"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: 0
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_ARGS
|
||
|
|
parameter to \"--event-qps=0\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.12
|
||
|
|
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--tls-cert-file"
|
||
|
|
set: true
|
||
|
|
- flag: "--tls-private-key-file"
|
||
|
|
set: true
|
||
|
|
remediation: "Follow the Kubernetes documentation and set up the TLS connection on the Kubelet.
|
||
|
|
Then, edit the $kubeletconf file on the master node and set the KUBELET_ARGS
|
||
|
|
parameter to include \"--tls-cert-file=<path/to/tls-certificate-file>\" and
|
||
|
|
\"--tls-private-key-file=<path/to/tls-key-file>\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.13
|
||
|
|
text: "Ensure that the --cadvisor-port argument is set to 0 (Scored)"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "--cadvisor-port"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: 0
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_ARGS parameter
|
||
|
|
to \"--cadvisor-port=0\""
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.14
|
||
|
|
text: "Ensure that the RotateKubeletClientCertificate argument is set to true"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "RotateKubeletClientCertificate"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: true
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_ARGS parameter
|
||
|
|
to a value to include \"--feature-gates=RotateKubeletClientCertificate=true\"."
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.1.15
|
||
|
|
text: "Ensure that the RotateKubeletServerCertificate argument is set to true"
|
||
|
|
audit: "ps -ef | grep $kubeletbin | grep -v grep"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "RotateKubeletServerCertificate"
|
||
|
|
compare:
|
||
|
|
op: eq
|
||
|
|
value: true
|
||
|
|
set: true
|
||
|
|
remediation: "Edit the $kubeletconf file on each node and set the KUBELET_ARGS parameter
|
||
|
|
to a value to include \"--feature-gates=RotateKubeletServerCertificate=true\"."
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.2
|
||
|
|
text: "Configuration Files"
|
||
|
|
checks:
|
||
|
|
- id: 2.2.1
|
||
|
|
text: "Ensure that the config file permissions are set to 644 or more restrictive (Scored)"
|
||
|
|
audit: "/bin/sh -c 'if test -e $kubernetesconf; then stat -c %a $kubernetesconf; 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.
|
||
|
|
\nFor example, chmod 644 $kubernetesconf"
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.2.2
|
||
|
|
text: "Ensure that the config file ownership is set to root:root (Scored)"
|
||
|
|
audit: "/bin/sh -c 'if test -e $kubernetesconf; then stat -c %U:%G $kubernetesconf; 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.
|
||
|
|
\nFor example, chown root:root $kubernetesconf"
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.2.3
|
||
|
|
text: "Ensure that the kubelet file permissions are 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 below command (based on the file location on your system) on the each worker node.
|
||
|
|
\nFor example, chmod 644 $kubeletconf"
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.2.4
|
||
|
|
text: "Ensure that the kubelet 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 below command (based on the file location on your system) on the each worker node.
|
||
|
|
\nFor example, chown root:root $kubeletconf"
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.2.5
|
||
|
|
text: "Ensure that the proxy file permissions are set to 644 or more restrictive (Scored)"
|
||
|
|
audit: "/bin/sh -c 'if test -e $proxyconf; then stat -c %a $proxyconf; 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.
|
||
|
|
\nFor example, chmod 644 $proxyconf"
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.2.6
|
||
|
|
text: "Ensure that the proxy file ownership is set to root:root (Scored)"
|
||
|
|
audit: "/bin/sh -c 'if test -e $proxyconf; then stat -c %U:%G $proxyconf; 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.
|
||
|
|
\nFor example, chown root:root $proxyconf"
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.2.7
|
||
|
|
text: "Ensure that the certificate authorities file permissions are set to
|
||
|
|
644 or more restrictive (Scored)"
|
||
|
|
audit: "/bin/sh -c 'if test -e $ca-file; then stat -c %a $ca-file; 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 to modify the file permissions of the --client-ca-file
|
||
|
|
\nchmod 644 <filename>"
|
||
|
|
scored: true
|
||
|
|
|
||
|
|
- id: 2.2.8
|
||
|
|
text: "Ensure that the client certificate authorities file ownership is set to root:root"
|
||
|
|
audit: "/bin/sh -c 'if test -e $ca-file; then stat -c %U:%G $ca-file; fi'"
|
||
|
|
tests:
|
||
|
|
test_items:
|
||
|
|
- flag: "notexist:notexist"
|
||
|
|
set: true
|
||
|
|
remediation: "Run the following command to modify the ownership of the --client-ca-file.
|
||
|
|
\nchown root:root <filename>"
|
||
|
|
scored: true
|