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Amir Jerbi 7 years ago committed by Ido Perlmuter
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kubernetes-bench-security
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LICENSE
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Apache License
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17
cfg/config.yaml
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---
## Controls Files.
# These are YAML files that hold all the details for running checks.
#
## Uncomment to use different control file paths.
# masterControls: $HOME/.cis_kubernetes/master.yaml
# nodeControls: $HOME/.cis_kubernetes/node.yaml
# federatedControls: $HOME/.cis_kubernetes/federated.yaml
## Configuration Directories.
# Specifies the directories to look for configuration files
# for the kubernetes components.
#
## Uncomment to use different paths.
# kubeConfDir: /etc/kubernetes
# etcdConfDir: /etc/etcd
# flanneldConfDir: /etc/sysconfig

284
cfg/federated.yaml
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---
controls:
id: 3
text: "Federated Deployments"
type: "federated"
groups:
- id: 3.1
text: "Federation API Server"
checks:
- id: 3.1.1
text: "Ensure that the --anonymous-auth argument is set to false (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--anonymous-auth"
compare:
op: eq
value: false
set: true
remediation: "Edit the deployment specs and set --anonymous-auth=false.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.2
text: "Ensure that the --basic-auth-file argument is not set (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--basic-auth-file"
set: false
remediation: "Follow the documentation and configure alternate mechanisms for authentication.
Then, edit the deployment specs and remove \"--basic-auth-file=<filename>\".\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.3
text: "Ensure that the --insecure-allow-any-token argument is not set (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--insecure-allow-any-token"
set: false
remediation: "Edit the deployment specs and remove --insecure-allow-any-token.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.4
text: "Ensure that the --insecure-bind-address argument is not set (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--insecure-bind-address"
set: false
remediation: "Edit the deployment specs and remove --insecure-bind-address.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.5
text: "Ensure that the --insecure-port argument is set to 0 (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--insecure-port"
compare:
op: eq
value: 0
set: true
remediation: "Edit the deployment specs and set --insecure-port=0.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.6
text: "Ensure that the --secure-port argument is not set to 0 (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
bin_op: or
test_items:
- flag: "--secure-port"
compare:
op: gt
value: 0
set: true
- flag: "--secure-port"
set: false
remediation: "Edit the deployment specs and set the --secure-port argument to the desired port.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.7
text: "Ensure that the --profiling argument is set to false (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--profiling"
compare:
op: eq
value: false
set: true
remediation: "Edit the deployment specs and set \"--profiling=false\".\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
score: true
- id: 3.1.8
text: "Ensure that the admission control policy is not set to AlwaysAdmit (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--admission-control"
compare:
op: nothave
value: AlwaysAdmit
set: true
remediation: "Edit the deployment specs and set --admission-control argument to a value that does
not include AlwaysAdmit.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.9
text: "Ensure that the admission control policy is set to NamespaceLifecycle (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "admission-control"
compare:
op: has
value: "NamespaceLifecycle"
set: true
remediation: "Edit the deployment specs and set --admission-control argument to a value that includes NamespaceLifecycle.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.10
text: "Ensure that the --audit-log-path argument is set as appropriate (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--audit-log-path"
set: true
remediation: "Edit the deployment specs and set --audit-log-path argument as appropriate.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.11
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--audit-log-maxage"
compare:
op: gte
value: 30
set: true
remediation: "Edit the deployment specs and set --audit-log-maxage to 30 or as appropriate.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.12
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--audit-log-maxbackup"
compare:
op: gte
value: 10
set: true
remediation: "Edit the deployment specs and set --audit-log-maxbackup to 10 or as appropriate.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.13
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--audit-log-maxsize"
compare:
op: gte
value: 100
set: true
remediation: "Edit the deployment specs and set --audit-log-maxsize=100 to 100 or as appropriate.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.14
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--authorization-mode"
compare:
op: nothave
value: "AlwaysAllow"
set: true
remediation: "Edit the deployment specs and set --authorization-mode argument to a value other than AlwaysAllow.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.15
text: "Ensure that the --token-auth-file parameter is not set (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--token-auth-file"
set: false
remediation: "Follow the documentation and configure alternate mechanisms for authentication.
Then, edit the deployment specs and remove the --token-auth-file=<filename> argument.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.16
text: "Ensure that the --service-account-lookup argument is set to true (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--service-account-lookup"
compare:
op: eq
value: true
set: true
remediation: "Edit the deployment specs and set \"--service-account-lookup=true\".\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.17
text: "Ensure that the --service-account-key-file argument is set as appropriate (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
test_items:
- flag: "--service-account-key-file"
set: true
remediation: "Edit the deployment specs and set --service-account-key-file argument as appropriate.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.18
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Scored"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
bin_op: and
test_items:
- flag: "--etcd-certfile"
set: true
- flag: "--etcd-keyfile"
set: true
remediation: "Follow the Kubernetes documentation and set up the TLS connection between the
federation apiserver and etcd. Then, edit the deployment specs and set \"--etcd-
certfile=<path/to/client-certificate-file>\" and \"--etcd-
keyfile=<path/to/client-key-file>\" arguments.\n
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.1.19
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Scored)"
audit: "ps -ef | grep federation-apiserver | grep -v grep"
tests:
bin_op: and
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 federation
apiserver. Then, edit the deployment specs and set \"--tls-cert-file=<path/to/tls-
certificate-file>\" and \"--tls-private-key-file=<path/to/tls-key-file>\" :
kubectl edit deployments federation-apiserver-deployment --namespace=federation-system"
scored: true
- id: 3.2
text: "Federation Controller Manager"
checks:
- id: 3.2.1
text: "Ensure that the --profiling argument is set to false (Scored)"
audit: "ps -ef | grep federation-controller-manager | grep -v grep"
tests:
test_items:
- flag: "--profiling"
compare:
op: eq
value: false
set: true
remediation: "Edit the deployment specs and set \"--profiling=false\".\n
kubectl edit deployments federation-controller-manager-deployment --namespace=federation-system"
scored: true

794
cfg/master.yaml
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---
controls:
id: 1
text: "Master Node Security Configuration"
type: "master"
groups:
- id: 1.1
text: "API Server"
checks:
- id: 1.1.1
text: "Ensure that the --allow-privileged argument is set to false (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "allow-privileged"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/config file on the master node and set
the KUBE_ALLOW_PRIV parameter to \"--allow-privileged=false\""
scored: true
- id: 1.1.2
text: "Ensure that the --anonymous-auth argument is set to false (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--anonymous-auth"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set
the KUBE_API_ARGS parameter to \"--anonymous-auth=false\""
scored: true
- id: 1.1.3
text: "Ensure that the --basic-auth-file argument is not set (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--basic-auth-file"
set: false
remediation: "Follow the documentation and configure alternate mechanisms for
authentication. Then, edit the $kubeConfDir/apiserver file on the master
node and remove the \"--basic-auth-file=<filename>\" argument from the
KUBE_API_ARGS parameter."
scored: true
- id: 1.1.4
text: "Ensure that the --insecure-allow-any-token argument is not set (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--insecure-allow-any-token"
set: false
remediation: "Edit the $kubeConfDir/apiserver file on the master node and remove
the --insecure-allow-any-token argument from the KUBE_API_ARGS parameter."
scored: true
- id: 1.1.5
text: "Ensure that the --kubelet-https argument is set to true (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--kubelet-https"
compare:
op: eq
value: true
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and remove
the --kubelet-https argument from the KUBE_API_ARGS parameter."
scored: true
- id: 1.1.6
text: "Ensure that the --insecure-bind-address argument is not set (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--insecure-bind-address"
set: false
remediation: "Edit the $kubeConfDir/apiserver file on the master node and remove
the --insecure-bind-address argument from the KUBE_API_ADDRESS parameter."
scored: true
- id: 1.1.7
text: "Ensure that the --insecure-port argument is set to 0 (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--insecure-port"
compare:
op: eq
value: 0
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set
--insecure-port=0 in the KUBE_API_PORT parameter."
scored: true
- id: 1.1.8
text: "Ensure that the --secure-port argument is not set to 0 (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
bin_op: or
test_items:
- flag: "--secure-port"
compare:
op: gt
value: 0
set: true
- flag: "--secure-port"
set: false
remediation: "Edit the $kubeConfDir/apiserver file on the master node and either
remove the --secure-port argument from the KUBE_API_ARGS parameter or set
it to a different desired port."
scored: true
- id: 1.1.9
text: "Ensure that the --profiling argument is set to false (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--profiling"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to \"--profiling=false\""
scored: true
- id: 1.1.10
text: "Ensure that the --repair-malformed-updates argument is set to false (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--repair-malformed-updates"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to \"--repair-malformed-updates=false\""
scored: true
- id: 1.1.11
text: "Ensure that the admission control policy is not set to AlwaysAdmit (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--admission-control"
compare:
op: nothave
value: AlwaysAdmit
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_ADMISSION_CONTROL parameter to a value that does not include AlwaysAdmit"
scored: true
- id: 1.1.12
text: "Ensure that the admission control policy is set to AlwaysPullImages (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--admission-control"
compare:
op: has
value: "AlwaysPullImages"
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_ADMISSION_CONTROL parameter to \"--admission-control=...,AlwaysPullImages,...\""
scored: true
- id: 1.1.13
text: "Ensure that the admission control policy is set to DenyEscalatingExec (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--admission-control"
compare:
op: has
value: "DenyEscalatingExec"
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_ADMISSION_CONTROL parameter to \"--admission-control=...,DenyEscalatingExec,...\""
scored: true
- id: 1.1.14
text: "Ensure that the admission control policy is set to SecurityContextDeny (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--admission-control"
compare:
op: has
value: "SecurityContextDeny"
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_ADMISSION_CONTROL parameter to \"--admission-control=...,SecurityContextDeny,...\""
scored: true
- id: 1.1.15
text: "Ensure that the admission control policy is set to NamespaceLifecycle (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "admission-control"
compare:
op: has
value: "NamespaceLifecycle"
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_ADMISSION_CONTROL parameter to \"--admission-control=NamespaceLifecycle,...\""
scored: true
- id: 1.1.16
text: "Ensure that the --audit-log-path argument is set as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--audit-log-path"
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to \"--audit-log-path=<filename>\""
scored: true
- id: 1.1.17
text: "Ensure that the --audit-log-maxage argument is set to 30 or as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--audit-log-maxage"
compare:
op: gte
value: 30
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to \"--audit-log-maxage=30\""
scored: true
- id: 1.1.18
text: "Ensure that the --audit-log-maxbackup argument is set to 10 or as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--audit-log-maxbackup"
compare:
op: gte
value: 10
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to \"--audit-log-maxbackup=10\""
scored: true
- id: 1.1.19
text: "Ensure that the --audit-log-maxsize argument is set to 100 or as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--audit-log-maxsize"
compare:
op: gte
value: 100
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to \"--audit-log-maxsize=100\""
scored: true
- id: 1.1.20
text: "Ensure that the --authorization-mode argument is not set to AlwaysAllow (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--authorization-mode"
compare:
op: nothave
value: "AlwaysAllow"
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to values other than \"--authorization-mode=AlwaysAllow\""
scored: true
- id: 1.1.21
text: "Ensure that the --token-auth-file parameter is not set (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--token-auth-file"
set: false
remediation: "Follow the documentation and configure alternate mechanisms for authentication.
Then, edit the $kubeConfDir/apiserver file on the master node and remove the
\"--tokenauth-file=<filename>\" argument from the KUBE_API_ARGS parameter."
scored: true
- id: 1.1.22
text: "Ensure that the --kubelet-certificate-authority argument is set as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--kubelet-certificate-authority"
set: true
remediation: "Follow the Kubernetes documentation and setup the TLS connection between
the apiserver and kubelets. Then, edit the $kubeConfDir/apiserver file on the
master node and set the KUBE_API_ARGS parameter to
\"--kubelet-certificate-authority=<ca-string>\""
scored: true
- id: 1.1.23
text: "Ensure that the --kubelet-client-certificate and --kubelet-clientkey arguments are set as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
bin_op: and
test_items:
- flag: "--kubelet-client-certificate"
set: true
- flag: "--kubelet-client-key"
set: true
remediation: "Follow the Kubernetes documentation and set up the TLS connection between the apiserver
and kubelets. Then, edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to \"--kubelet-clientcertificate=<path/to/client-certificate-file>\"
and \"--kubelet-clientkey=<path/to/client-key-file>\""
scored: true
- id: 1.1.24
text: "Ensure that the --service-account-lookup argument is set to true (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--service-account-lookup"
compare:
op: eq
value: true
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the KUBE_API_ARGS parameter
to \"--service-account-lookup=true\""
scored: true
- id: 1.1.25
text: "Ensure that the admission control policy is set to PodSecurityPolicy (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--admission-control"
compare:
op: has
value: "PodSecurityPolicy"
set: true
remediation: "Follow the documentation and create Pod Security Policy objects as per your environment.
Then, edit the $kubeConfDir/apiserver file on the master node and set the KUBE_ADMISSION_CONTROL
parameter to \"--admission-control=...,PodSecurityPolicy,...\""
scored: true
- id: 1.1.26
text: "Ensure that the --service-account-key-file argument is set as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--service-account-key-file"
set: true
remediation: "Edit the $kubeConfDir/apiserver file on the master node and set the KUBE_API_ARGS
parameter to \"--service-account-key-file=<filename>\""
scored: true
- id: 1.1.27
text: "Ensure that the --etcd-certfile and --etcd-keyfile arguments are set as appropriate (Scored"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
bin_op: and
test_items:
- flag: "--etcd-certfile"
set: true
- flag: "--etcd-keyfile"
set: true
remediation: "Follow the Kubernetes documentation and set up the TLS connection between the apiserver
and etcd. Then, edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to include \"--etcd-certfile=<path/to/clientcertificate-file>\"
and \"--etcd-keyfile=<path/to/client-key-file>\""
scored: true
- id: 1.1.28
text: "Ensure that the admission control policy is set to ServiceAccount (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--admission-control"
compare:
op: has
value: "ServiceAccount"
set: true
remediation: "Follow the documentation and create ServiceAccount objects as per your environment.
Then, edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_ADMISSION_CONTROL parameter to \"--admissioncontrol=...,ServiceAccount,...\""
scored: true
- id: 1.1.29
text: "Ensure that the --tls-cert-file and --tls-private-key-file arguments are set as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
bin_op: and
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 apiserver.
Then, edit the $kubeConfDir/apiserver file on the master node and set the KUBE_API_ARGS parameter to
include \"--tls-cert-file=<path/to/tls-certificatefile>\" and
\"--tls-private-key-file=<path/to/tls-key-file>\""
scored: true
- id: 1.1.30
text: "Ensure that the --client-ca-file argument is set as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--client-ca-file"
set: true
remediation: "Follow the Kubernetes documentation and set up the TLS connection on the apiserver.
Then, edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to include \"--client-ca-file=<path/to/client-ca-file>\""
scored: true
- id: 1.1.31
text: "Ensure that the --etcd-cafile argument is set as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--etcd-cafile"
set: true
remediation: "Follow the Kubernetes documentation and set up the TLS connection between the apiserver
and etcd. Then, edit the $kubeConfDir/apiserver file on the master node and set the
KUBE_API_ARGS parameter to include \"--etcd-cafile=<path/to/ca-file>\""
scored: true
- id: 1.2
text: "Scheduler"
checks:
- id: 1.2.1
text: "Ensure that the --profiling argument is set to false (Scored)"
audit: "ps -ef | grep kube-scheduler | grep -v grep"
tests:
test_items:
- flag: "--profiling"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/scheduler file on the master node and set the KUBE_SCHEDULER_ARGS
parameter to \"--profiling=false\""
scored: true
- id: 1.3
text: "Controller Manager"
checks:
- id: 1.3.1
text: "Ensure that the --terminated-pod-gc-threshold argument is set as appropriate (Scored)"
audit: "ps -ef | grep kube-controller-manager | grep -v grep"
tests:
test_items:
- flag: "--terminated-pod-gc-threshold"
set: true
remediation: "Edit the $kubeConfDir/controller-manager file on the master node and set the
KUBE_CONTROLLER_MANAGER_ARGS parameter to \"--terminated-pod-gcthreshold=<appropriate-number>\""
scored: true
- id: 1.3.2
text: "Ensure that the --profiling argument is set to false (Scored)"
audit: "ps -ef | grep kube-controller-manager | grep -v grep"
tests:
test_items:
- flag: "--profiling"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/controller-manager file on the master node and set the
KUBE_CONTROLLER_MANAGER_ARGS parameter to \"--profiling=false\""
scored: true
- id: 1.3.3
text: "Ensure that the --insecure-experimental-approve-all-kubelet-csrs-for-group argument is not set (Scored)"
audit: "ps -ef | grep kube-controller-manager | grep -v grep"
tests:
test_items:
- flag: "--insecure-experimental-approve-all-kubelet-csrs-for-group"
set: false
remediation: "Edit the $kubeConfDir/controller-manager file on the master node and remove
the -insecure-experimental-approve-all-kubelet-csrs-for-group argument from the
KUBE_CONTROLLER_MANAGER_ARGS parameter"
scored: true
- id: 1.3.4
text: "Ensure that the --use-service-account-credentials argument is set"
audit: "ps -ef | grep kube-controller-manager | grep -v grep"
tests:
test_items:
- flag: "--use-service-account-credentials"
compare:
op: eq
value: true
set: true
remediation: "Edit the $kubeConfDir/controller-manager file on the master node and set the
KUBE_CONTROLLER_MANAGER_ARGS parameter to --use-service-account-credentials=true"
scored: true
- id: 1.3.5
text: "Ensure that the --service-account-private-key-file argument is set as appropriate (Scored)"
audit: "ps -ef | grep kube-controller-manager | grep -v grep"
tests:
test_items:
- flag: "--service-account-private-key-file"
set: true
remediation: "Edit the $kubeConfDir/controller-manager file on the master node and set the
KUBE_CONTROLLER_MANAGER_ARGS parameter to --service-account-private-keyfile=<filename>"
scored: true
- id: 1.3.6
text: "Ensure that the --root-ca-file argument is set as appropriate (Scored)"
audit: "ps -ef | grep kube-controller-manager | grep -v grep"
tests:
test_items:
- flag: "--root-ca-file"
set: true
remediation: "Edit the $kubeConfDir/controller-manager file on the master node and set the
KUBE_CONTROLLER_MANAGER_ARGS parameter to include --root-ca-file=<file>"
scored: true
- id: 1.4
text: "Configure Files"
checks:
- id: 1.4.1
text: "Ensure that the apiserver file permissions are set to 644 or more restrictive (Scored)"
audit: "stat -c %a $kubeConfDir/apiserver"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chmod 644 $kubeConfDir/apiserver"
scored: true
- id: 1.4.2
text: "Ensure that the apiserver file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G $kubeConfDir/apiserver"
tests:
test_items:
- flag: "root:root"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chown root:root $kubeConfDir/apiserver"
scored: true
- id: 1.4.3
text: "Ensure that the config file permissions are set to 644 or more restrictive (Scored)"
audit: "stat -c %a $kubeConfDir/config"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chmod 644 $kubeConfDir/config"
scored: true
- id: 1.4.4
text: "Ensure that the config file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G $kubeConfDir/config"
tests:
test_items:
- flag: "root:root"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chown root:root $kubeConfDir/config"
scored: true
- id: 1.4.5
text: "Ensure that the scheduler file permissions are set to 644 or more restrictive (Scored)"
audit: "stat -c %a $kubeConfDir/scheduler"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chmod 644 $kubeConfDir/scheduler"
scored: true
- id: 1.4.6
text: "Ensure that the scheduler file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G $kubeConfDir/scheduler"
tests:
test_items:
- flag: "root:root"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chown root:root $kubeConfDir/scheduler"
scored: true
- id: 1.4.7
text: "Ensure that the etcd.conf file permissions are set to 644 or more restrictive (Scored)"
audit: "stat -c %a $etcdConfDir/etcd.conf"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chmod 644 $etcdConfDir/etcd.conf"
scored: true
- id: 1.4.8
text: "Ensure that the etcd.conf file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G $etcdConfDir/etcd.conf"
tests:
test_items:
- flag: "root:root"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chown root:root $etcdConfDir/etcd.conf"
scored: true
- id: 1.4.9
text: "Ensure that the flanneld file permissions are set to 644 or more restrictive (Scored)"
audit: "stat -c %a /etc/sysconfig/flanneld"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chmod 644 /etc/sysconfig/flanneld"
scored: true
- id: 1.4.10
text: "Ensure that the flanneld file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G /etc/sysconfig/flanneld"
tests:
test_items:
- flag: "root:root"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node.
\nFor example, chown root:root /etc/sysconfig/flanneld"
scored: true
# TODO: Resolve issue get pipeline to work.
# - id: 1.4.11
# - text: "Ensure that the etcd data directory permissions are set to 700 or more restrictive (Scored)"
# - audit: "ps -ef | grep etcd | grep -v grep | sed 's,.*--data-dir=\\(.*\\)\\s.*,\\1,' | xargs stat -c %a"
# - tests:
# - test_items:
# - - flag: "700"
# - set: true
# - remediation: ""
# - scored: true
- id: 1.5
text: "etcd"
checks:
- id: 1.5.1
text: "Ensure that the --cert-file and --key-file arguments are set as appropriate (Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
test_items:
- flag: "--cert-file"
set: true
- flag: "--key-file"
set: true
remediation: "Follow the etcd service documentation and configure TLS encryption."
scored: true
- id: 1.5.2
text: "Ensure that the --client-cert-auth argument is set to true (Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
test_items:
- flag: "--client-cert-auth"
compare:
op: eq
value: true
set: true
remediation: "Edit the etcd envrironment file (for example, $etcdConfDir/etcd.conf) on the
etcd server node and set the ETCD_CLIENT_CERT_AUTH parameter to \"true\".
Edit the etcd startup file (for example, /etc/systemd/system/multiuser.target.wants/etcd.service)
and configure the startup parameter for --clientcert-auth and set it to \"${ETCD_CLIENT_CERT_AUTH}\""
scored: true
- id: 1.5.3
text: "Ensure that the --auto-tls argument is not set to true (Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
bin_op: or
test_items:
- flag: "--auto-tls"
set: false
- flag: "--auto-tls"
compare:
op: neq
value: true
remediation: "Edit the etcd environment file (for example, $etcdConfDir/etcd.conf) on the etcd server
node and comment out the ETCD_AUTO_TLS parameter. Edit the etcd startup file (for example,
/etc/systemd/system/multiuser.target.wants/etcd.service) and remove the startup parameter
for --auto-tls."
scored: true
- id: 1.5.4
text: "Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
test_items:
- flag: "--peer-cert-file"
set: true
- flag: "--peer-key-file"
set: true
remediation: "Note: This recommendation is applicable only for etcd clusters. If you are using only
one etcd server in your environment then this recommendation is not applicable.
Follow the etcd service documentation and configure peer TLS encryption as appropriate for
your etcd cluster."
scored: true
- id: 1.5.5
text: "Ensure that the --peer-client-cert-auth argument is set to true (Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
test_items:
- flag: "--peer-client-cert-auth"
compare:
op: eq
value: true
set: true
remediation: "Note: This recommendation is applicable only for etcd clusters. If you are using only
one etcd server in your environment then this recommendation is not applicable.
Edit the etcd environment file (for example, $etcdConfDir/etcd.conf) on the etcd server node
and set the ETCD_PEER_CLIENT_CERT_AUTH parameter to \"true\". Edit the etcd startup file
(for example, /etc/systemd/system/multiuser.target.wants/etcd.service) and configure the
startup parameter for --peer-client-cert-auth and set it to \"${ETCD_PEER_CLIENT_CERT_AUTH}\""
scored: true
- id: 1.5.6
text: "Ensure that the --peer-auto-tls argument is not set to true (Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
bin_op: or
test_items:
- flag: "--peer-auto-tls"
set: false
- flag: "--peer-auto-tls"
compare:
op: eq
value: false
set: true
remediation: "Note: This recommendation is applicable only for etcd clusters.
If you are using only one etcd server in your environment then this recommendation is
not applicable. Edit the etcd environment file (for example, $etcdConfDir/etcd.conf)
on the etcd server node and comment out the ETCD_PEER_AUTO_TLS parameter.
Edit the etcd startup file (for example, /etc/systemd/system/multiuser.target.wants/etcd.service)
and remove the startup parameter for --peer-auto-tls."
scored: true
- id: 1.5.7
text: "Ensure that the --wal-dir argument is set as appropriate (Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
test_items:
- flag: "--wal-dir"
set: true
remediation: "Edit the etcd environment file (for example, $etcdConfDir/etcd.conf) on the etcd server node
and set the ETCD_WAL_DIR parameter as appropriate. Edit the etcd startup file (for example,
/etc/systemd/system/multiuser.target.wants/etcd.service) and configure the startup parameter for
--wal-dir and set it to \"${ETCD_WAL_DIR}\""
scored: true
- id: 1.5.8
text: "Ensure that the --max-wals argument is set to 0 (Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
test_items:
- flag: "--max-wals"
compare:
op: eq
value: 0
set: true
remediation: "Edit the etcd environment file (for example, $etcdConfDir/etcd.conf) on the etcd server node
and set the ETCD_MAX_WALS parameter to 0. Edit the etcd startup file (for example,
/etc/systemd/system/multiuser.target.wants/etcd.service) and configure the startup parameter
for --max-wals and set it to \"${ETCD_MAX_WALS}\"."
scored: true
- id: 1.5.9
text: "Ensure that a unique Certificate Authority is used for etcd (Not Scored)"
audit: "ps -ef | grep etcd | grep -v grep"
tests:
test_items:
- flag: "--trusted-ca-file"
set: true
remediation: "Follow the etcd documentation and create a dedicated certificate authority setup for the
etcd service."
scored: false

258
cfg/node.yaml
Unescape View File

@ -0,0 +1,258 @@
---
controls:
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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--allow-privileged"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/config 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--anonymous-auth"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/kubelet 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--authorization-mode"
compare:
op: nothave
value: "AlwaysAllow"
set: true
remediation: "Edit the $kubeConfDir/kubelet 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 kubelet | 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 $kubeConfDir/kubelet 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--read-only-port"
compare:
op: eq
value: 0
set: true
remediation: "Edit the $kubeConfDir/kubelet 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--streaming-connection-idle-timeout"
compare:
op: gt
value: 0
set: true
remediation: "Edit the $kubeConfDir/kubelet 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--protect-kernel-defaults"
compare:
op: eq
value: true
set: true
remediation: "Edit the $kubeConfDir/kubelet 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 kubelet | 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 $kubeConfDir/kubelet 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--keep-terminated-pod-volumes"
compare:
op: eq
value: false
set: true
remediation: "Edit the $kubeConfDir/kubelet 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--hostname-override"
set: false
remediation: "Edit the $kubeConfDir/kubelet 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--event-qps"
compare:
op: eq
value: 0
set: true
remediation: "Edit the $kubeConfDir/kubelet 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 kubelet | 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 $kubeConfDir/kubelet 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 kubelet | grep -v grep"
tests:
test_items:
- flag: "--cadvisor-port"
compare:
op: eq
value: 0
set: true
remediation: "Edit the $kubeConfDir/kubelet file on each node and set the KUBELET_ARGS parameter
to \"--cadvisor-port=0\""
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: "stat -c %a $kubeConfDir/config"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the each worker node.
\nFor example, chmod 644 $kubeConfDir/config"
scored: true
- id: 2.2.2
text: "Ensure that the config file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G $kubeConfDir/config"
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 $kubeConfDir/config"
scored: true
- id: 2.2.3
text: "Ensure that the kubelet file permissions are set to 644 or more restrictive (Scored)"
audit: "stat -c %a $kubeConfDir/kubelet"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the each worker node.
\nFor example, chmod 644 $kubeConfDir/kubelet"
scored: true
- id: 2.2.4
text: "Ensure that the kubelet file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G $kubeConfDir/kubelet"
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 $kubeConfDir/kubelet"
scored: true
- id: 2.2.5
text: "Ensure that the proxy file permissions are set to 644 or more restrictive (Scored)"
audit: "stat -c %a $kubeConfDir/proxy"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the each worker node.
\nFor example, chmod 644 $kubeConfDir/proxy"
scored: true
- id: 2.2.6
text: "Ensure that the proxy file ownership is set to root:root (Scored)"
audit: "stat -c %U:%G $kubeConfDir/proxy"
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 $kubeConfDir/proxy"
scored: true

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# Checks
Checks are recommendations from the Center for Internet Security for Kubernetes 1.6+ installations.
## YAML Representation
In this application these recommendations are represented as YAML documents.
An example is as listed below:
```
---
controls:
id: 1
text: "Master Checks"
type: "master"
groups:
- id: 1.1
text: "Kube-apiserver"
checks:
- id: 1.1.1
text: "Ensure that the --allow-privileged argument is set (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
- flag: "--allow-privileged"
set: true
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
scored: true
```
Recommendations (called `checks` in this document) can run on Kubernetes Master, Node or Federated API Servers.
Checks are organized into `groups` which share similar controls (things to check for) and are grouped together in the section of the CIS Kubernetes document.
These groups are further organized under `controls` which can be of the type `master`, `node` or `federated apiserver` to reflect the various Kubernetes node types.
## Tests
Tests are the items we actually look for to determine if a check is successful or not. Checks can have multiple tests, which must all be successful for the check to pass.
The syntax for tests:
```
tests:
- flag:
set:
compare:
op:
value:
...
```
Tests have various `operations` which are used to compare the output of audit commands for success.
These operations are:
- `eq`: tests if the flag value is equal to the compared value.
- `noteq`: tests if the flag value is unequal to the compared value.
- `gt`: tests if the flag value is greater than the compared value.
- `gte`: tests if the flag value is greater than or equal to the compared value.
- `lt`: tests if the flag value is less than the compared value.
- `lte`: tests if the flag value is less than or equal to the compared value.
- `has`: tests if the flag value contains the compared value.
- `nothave`: tests if the flag value does not contain the compared value.

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check/check.go
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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package check
import (
"bufio"
"fmt"
"io"
"os"
"os/exec"
"strings"
"github.com/joncalhoun/pipe"
)
// NodeType indicates the type of node (master, node, federated).
type NodeType string
// State is the state of a control check.
type State string
const (
// PASS check passed.
PASS State = "PASS"
// FAIL check failed.
FAIL = "FAIL"
// WARN could not carry out check.
WARN = "WARN"
// MASTER a master node
MASTER NodeType = "master"
// NODE a node
NODE NodeType = "node"
// FEDERATED a federated deployment.
FEDERATED NodeType = "federated"
)
// Check contains information about a recommendation in the
// CIS Kubernetes 1.6+ document.
type Check struct {
ID string `yaml:"id" json:"id"`
Text string
Audit string `json:"omit"`
Commands []*exec.Cmd `json:"omit"`
Tests *tests `json:"omit"`
Set bool `json:"omit"`
Remediation string
State
}
// Run executes the audit commands specified in a check and outputs
// the results.
func (c *Check) Run() {
var out string
// Check if command exists or exit with WARN.
for _, cmd := range c.Commands {
_, err := exec.LookPath(cmd.Path)
if err != nil {
c.State = WARN
return
}
}
// Run commands.
if len(c.Commands) == 0 {
// Likely a warning message.
c.State = WARN
return
}
p, err := pipe.New(c.Commands...)
if err != nil {
fmt.Fprintf(os.Stderr, "init: error creating command pipeline %s\n", err)
os.Exit(1)
}
pr, pw := io.Pipe()
p.Stdout = pw
defer pw.Close()
if err := p.Start(); err != nil {
fmt.Fprintf(os.Stderr, "start: error running audit command %s\n", err)
os.Exit(1)
}
// Read output of command chain into string for check.
go func() {
defer pr.Close()
scanner := bufio.NewScanner(pr)
for scanner.Scan() {
out += scanner.Text()
}
if err := scanner.Err(); err != nil {
fmt.Fprintf(os.Stderr, "error accumulating output %s\n", err)
os.Exit(1)
}
}()
if err := p.Wait(); err != nil {
fmt.Fprintf(os.Stderr, "wait: error running audit command %s\n", err)
os.Exit(1)
}
res := c.Tests.execute(out)
if res {
c.State = PASS
} else {
c.State = FAIL
}
}
// textToCommand transforms a text representation of commands to be
// run into a slice of commands.
// TODO: Make this more robust.
func textToCommand(s string) []*exec.Cmd {
cmds := []*exec.Cmd{}
cp := strings.Split(s, "|")
// fmt.Println("check.toCommand:", cp)
for _, v := range cp {
v = strings.Trim(v, " ")
cs := strings.Split(v, " ")
cmd := exec.Command(cs[0], cs[1:]...)
cmds = append(cmds, cmd)
}
return cmds
}

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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package check
import (
"encoding/json"
"fmt"
"os"
yaml "gopkg.in/yaml.v2"
)
// Controls holds all controls to check for master nodes.
type Controls struct {
ID string `yaml:"id"`
Text string
Type NodeType
Groups []*Group
Summary
}
// Group is a collection of similar checks.
type Group struct {
ID string `yaml:"id"`
Text string
Checks []*Check
}
// Summary is a summary of the results of control checks run.
type Summary struct {
Pass int
Fail int
Warn int
}
// NewControls instantiates a new master Controls object.
func NewControls(t NodeType, in []byte) *Controls {
var err error
c := new(Controls)
err = yaml.Unmarshal(in, c)
if err != nil {
fmt.Fprintf(os.Stderr, "%s\n", err)
os.Exit(1)
}
if t != c.Type {
fmt.Fprintf(os.Stderr, "non-%s controls file specified\n", t)
os.Exit(1)
}
// Prepare audit commands
for _, group := range c.Groups {
for _, check := range group.Checks {
check.Commands = textToCommand(check.Audit)
}
}
return c
}
// RunGroup runs all checks in a group.
func (controls *Controls) RunGroup(gids ...string) Summary {
g := []*Group{}
controls.Summary.Pass, controls.Summary.Fail, controls.Summary.Warn = 0, 0, 0
// If no groupid is passed run all group checks.
if len(gids) == 0 {
gids = controls.getAllGroupIDs()
}
for _, group := range controls.Groups {
for _, gid := range gids {
if gid == group.ID {
for _, check := range group.Checks {
check.Run()
summarize(controls, check)
}
g = append(g, group)
}
}
}
controls.Groups = g
return controls.Summary
}
// RunChecks runs the checks with the supplied IDs.
func (controls *Controls) RunChecks(ids ...string) Summary {
g := []*Group{}
m := make(map[string]*Group)
controls.Summary.Pass, controls.Summary.Fail, controls.Summary.Warn = 0, 0, 0
// If no groupid is passed run all group checks.
if len(ids) == 0 {
ids = controls.getAllCheckIDs()
}
for _, group := range controls.Groups {
for _, check := range group.Checks {
for _, id := range ids {
if id == check.ID {
check.Run()
summarize(controls, check)
// Check if we have already added this checks group.
if v, ok := m[group.ID]; !ok {
// Create a group with same info
w := &Group{
ID: group.ID,
Text: group.Text,
Checks: []*Check{},
}
// Add this check to the new group
w.Checks = append(w.Checks, check)
// Add to groups we have visited.
m[w.ID] = w
g = append(g, w)
} else {
v.Checks = append(v.Checks, check)
}
}
}
}
}
controls.Groups = g
return controls.Summary
}
// JSON encodes the results of last run to JSON.
func (controls *Controls) JSON() ([]byte, error) {
return json.Marshal(controls)
}
func (controls *Controls) getAllGroupIDs() []string {
var ids []string
for _, group := range controls.Groups {
ids = append(ids, group.ID)
}
return ids
}
func (controls *Controls) getAllCheckIDs() []string {
var ids []string
for _, group := range controls.Groups {
for _, check := range group.Checks {
ids = append(ids, check.ID)
}
}
return ids
}
func summarize(controls *Controls, check *Check) {
switch check.State {
case PASS:
controls.Summary.Pass++
case FAIL:
controls.Summary.Fail++
case WARN:
controls.Summary.Warn++
}
}

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---
controls:
id: 1
text: "Master Checks"
type: "master"
groups:
- id: 1.1
text: "Kube-apiserver"
checks:
- id: 1.1.1
text: "Ensure that the --allow-privileged argument is set (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
-
flag: "--allow-privileged"
set: true
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
scored: true
- id: 1.1.2
text: "Ensure that the --basic-auth argument is not set (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_item:
-
flag: "--basic-auth"
set: false
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
scored: true
- id: 1.1.3
text: "Ensure that the --insecure-port argument is set to 0 (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
-
flag: "--insecure-port"
compare:
op: eq
value: 0
set: true
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
scored: true
- id: 1.1.4
text: "Ensure that the --audit-log-maxage argument is set to 30 or appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
-
flag: "--audit-log-maxage"
compare:
op: gte
value: 30
set: true
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
scored: true
- id: 1.1.5
text: "Ensure that the --max-backlog argument is set to 30 or less (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
- flag: "--max-backlog"
compare:
op: lt
value: 30
set: true
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
scored: true
- id: 1.1.6
text: "Ensure admission control does not include AlwaysAdmit (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
test_items:
-
flag: "--admission-control"
compare:
op: nothave
value: AlwaysAdmit
set: true
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
scored: true
- id: 1.1.7
text: "Ensure that the --kubelet-client-certificate and --kubelet-clientkey arguments are set as appropriate (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
bin_op: and
test_items:
- flag: "--kubelet-client-certificate"
set: true
- flag: "--kubelet-clientkey"
set: true
remediation: "Edit the /etc/kubernetes/config file on the master node and set the KUBE_ALLOW_PRIV parameter to '--allow-privileged=false'"
scored: true
- id: 1.1.8
text: "Ensure that the --secure-port argument is not set to 0 (Scored)"
audit: "ps -ef | grep kube-apiserver | grep -v grep"
tests:
bin_op: or
test_items:
-
flag: "--secure-port"
compare:
op: eq
value: 0
set: true
-
flag: "--secure-port"
set: false
remediation: "Edit the /etc/kubernetes/apiserver file on the master node and either remove the -secure-port argument from the KUBE_API_ARGS parameter or set it to a different desired port."
scored: true
- id: 1.4.1
text: "Ensure that the apiserver file permissions are set to 644 or more restrictive (Scored)"
audit: "stat -c %a /etc/kubernetes/apiserver"
tests:
test_items:
- flag: "644"
set: true
remediation: "Run the below command (based on the file location on your system) on the master node. For example, chmod 644 /etc/kubernetes/apiserver"
scored: true

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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package check
import (
"fmt"
"os"
"regexp"
"strconv"
"strings"
)
// test:
// flag: OPTION
// set: (true|false)
// compare:
// op: (eq|gt|gte|lt|lte|has)
// value: val
type binOp string
const (
and binOp = "and"
or = "or"
)
type testItem struct {
Flag string
Value string
Set bool
Compare compare
}
type compare struct {
Op string
Value string
}
func (t *testItem) execute(s string) (result bool) {
result = false
match := strings.Contains(s, t.Flag)
if t.Set {
var flagVal string
isset := match
if isset && t.Compare.Op != "" {
pttn := t.Flag + `=(\S*) *`
flagRe := regexp.MustCompile(pttn)
vals := flagRe.FindStringSubmatch(s)
if len(vals) > 0 {
flagVal = vals[1]
} else {
fmt.Fprintf(os.Stderr, "expected value for %s but none found\n", t.Flag)
os.Exit(1)
}
switch t.Compare.Op {
case "eq":
result = flagVal == t.Compare.Value
case "noteq":
result = !(flagVal == t.Compare.Value)
case "gt":
a, b := toNumeric(flagVal, t.Compare.Value)
result = a > b
case "gte":
a, b := toNumeric(flagVal, t.Compare.Value)
result = a >= b
case "lt":
a, b := toNumeric(flagVal, t.Compare.Value)
result = a < b
case "lte":
a, b := toNumeric(flagVal, t.Compare.Value)
result = a <= b
case "has":
result = strings.Contains(flagVal, t.Compare.Value)
case "nothave":
result = !strings.Contains(flagVal, t.Compare.Value)
}
} else {
result = isset
}
} else {
notset := !match
result = notset
}
return
}
type tests struct {
TestItems []*testItem `yaml:"test_items"`
BinOp binOp `yaml:"bin_op"`
}
func (ts *tests) execute(s string) (result bool) {
res := make([]bool, len(ts.TestItems))
for i, t := range ts.TestItems {
res[i] = t.execute(s)
}
// If no binary operation is specified, default to AND
switch ts.BinOp {
default:
fmt.Fprintf(os.Stderr, "unknown binary operator for tests %s\n", ts.BinOp)
os.Exit(1)
case and, "":
result = true
for i := range res {
result = result && res[i]
}
case or:
result = false
for i := range res {
result = result || res[i]
}
}
return
}
func toNumeric(a, b string) (c, d int) {
var err error
c, err = strconv.Atoi(a)
if err != nil {
fmt.Fprintf(os.Stderr, "error converting %s: %s\n", a, err)
os.Exit(1)
}
d, err = strconv.Atoi(b)
if err != nil {
fmt.Fprintf(os.Stderr, "error converting %s: %s\n", b, err)
os.Exit(1)
}
return c, d
}

95
check/test_test.go
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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package check
import (
"io/ioutil"
"testing"
)
var (
in []byte
controls *Controls
)
func init() {
var err error
in, err = ioutil.ReadFile("data")
if err != nil {
panic("Failed reading test data: " + err.Error())
}
controls = NewControls(MASTER, in)
}
func TestTestExecute(t *testing.T) {
cases := []struct {
*tests
testfor string
str string
}{
{
controls.Groups[0].Checks[0].Tests,
"flag set",
"2:45 ../kubernetes/kube-apiserver --allow-privileged=false --option1=20,30,40",
},
{
controls.Groups[0].Checks[1].Tests,
"flag not set",
"2:45 ../kubernetes/kube-apiserver --allow-privileged=false",
},
{
controls.Groups[0].Checks[2].Tests,
"flag and value set",
"niinai 13617 2635 99 19:26 pts/20 00:03:08 ./kube-apiserver --insecure-port=0 --anonymous-auth",
},
{
controls.Groups[0].Checks[3].Tests,
"flag value greater than value",
"2:45 ../kubernetes/kube-apiserver --secure-port=0 --audit-log-maxage=40 --option",
},
{
controls.Groups[0].Checks[4].Tests,
"flag value less than value",
"2:45 ../kubernetes/kube-apiserver --max-backlog=20 --secure-port=0 --audit-log-maxage=40 --option",
},
{
controls.Groups[0].Checks[5].Tests,
"flag value does not have",
"2:45 ../kubernetes/kube-apiserver --option --admission-control=WebHook,RBAC ---audit-log-maxage=40",
},
{
controls.Groups[0].Checks[6].Tests,
"AND multiple tests, all testitems pass",
"2:45 .. --kubelet-clientkey=foo --kubelet-client-certificate=bar --admission-control=Webhook,RBAC",
},
{
controls.Groups[0].Checks[7].Tests,
"OR multiple tests",
"2:45 .. --secure-port=0 --kubelet-client-certificate=bar --admission-control=Webhook,RBAC",
},
{
controls.Groups[0].Checks[8].Tests,
"text",
"644",
},
}
for _, c := range cases {
res := c.tests.execute(c.str)
if !res {
t.Errorf("%s, expected:%v, got:%v\n", c.testfor, true, res)
}
}
}

225
cmd/common.go
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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"regexp"
"strings"
"github.com/aquasecurity/kubernetes-bench-security/check"
"github.com/fatih/color"
"github.com/spf13/viper"
)
var (
kubeMasterBin = []string{"kube-apiserver", "kube-scheduler", "kube-controller-manager"}
kubeMasterConf = []string{}
kubeNodeBin = []string{"kubelet"}
kubeNodeConf = []string{}
kubeFederatedBin = []string{"federation-apiserver", "federation-controller-manager"}
kubeFederatedConf = []string{}
// TODO: Consider specifying this in config file.
kubeVersion = "Kubernetes v1.6"
// Used for variable substitution
symbols = map[string]string{}
)
func runChecks(t check.NodeType) {
var summary check.Summary
var file string
// Set up for config file check.
kubeMasterConf = append(kubeMasterConf, viper.Get("kubeConfDir").(string)+"/apiserver")
kubeMasterConf = append(kubeMasterConf, viper.Get("kubeConfDir").(string)+"/scheduler")
kubeMasterConf = append(kubeMasterConf, viper.Get("kubeConfDir").(string)+"/controller-manager")
kubeMasterConf = append(kubeMasterConf, viper.Get("kubeConfDir").(string)+"/config")
kubeMasterConf = append(kubeMasterConf, viper.Get("etcdConfDir").(string)+"/etcd.conf")
kubeMasterConf = append(kubeMasterConf, viper.Get("flanneldConfDir").(string)+"/flanneld")
kubeNodeConf = append(kubeNodeConf, viper.Get("kubeConfDir").(string)+"/kubelet")
kubeNodeConf = append(kubeNodeConf, viper.Get("kubeConfDir").(string)+"/proxy")
verifyNodeType(t)
switch t {
case check.MASTER:
file = masterFile
case check.NODE:
file = nodeFile
case check.FEDERATED:
file = federatedFile
}
in, err := ioutil.ReadFile(file)
if err != nil {
fmt.Fprintf(os.Stderr, "error opening %s controls file: %s\n", t, err)
os.Exit(1)
}
// Variable substitutions. Replace all occurrences of variables in controls file.
s := strings.Replace(string(in), "$kubeConfDir", viper.Get("kubeConfDir").(string), -1)
s = strings.Replace(s, "$etcdConfDir", viper.Get("etcdConfDir").(string), -1)
s = strings.Replace(s, "$flanneldConfDir", viper.Get("etcdConfDir").(string), -1)
controls := check.NewControls(t, []byte(s))
if groupList != "" && checkList == "" {
// log.Println("group: set, checks: not set")
ids := cleanIDs(groupList)
summary = controls.RunGroup(ids...)
} else if checkList != "" && groupList == "" {
// log.Println("group: not set, checks: set")
ids := cleanIDs(checkList)
summary = controls.RunChecks(ids...)
} else if checkList != "" && groupList != "" {
// log.Println("group: set, checks: set")
fmt.Fprintf(os.Stderr, "group option and check option can't be used together\n")
os.Exit(1)
} else {
summary = controls.RunGroup()
}
if jsonFmt {
out, err := controls.JSON()
if err != nil {
}
fmt.Println(string(out))
} else {
prettyPrint(controls, summary)
}
}
func cleanIDs(list string) []string {
list = strings.Trim(list, ",")
ids := strings.Split(list, ",")
for _, id := range ids {
id = strings.Trim(id, " ")
}
return ids
}
func verifyNodeType(t check.NodeType) {
var binPath []string
var confPath []string
var out []byte
switch t {
case check.MASTER:
binPath = kubeMasterBin
confPath = kubeMasterConf
case check.NODE:
binPath = kubeNodeBin
confPath = kubeNodeConf
case check.FEDERATED:
binPath = kubeFederatedBin
confPath = kubeFederatedConf
}
for _, b := range binPath {
_, err := exec.LookPath(b)
if err != nil {
fmt.Fprintf(os.Stderr, "%s: command not found\n", b)
os.Exit(1)
}
// Check version
cmd := exec.Command(b, "--version")
out, _ = cmd.Output()
if matched, _ := regexp.MatchString(kubeVersion, string(out)); !matched {
fmt.Fprintf(os.Stderr,
"%s unsupported version, expected v%s, got %s\n",
b,
kubeVersion,
string(out),
)
os.Exit(1)
}
// Check if running
cmd = exec.Command("ps", "-ef")
out, _ = cmd.Output()
if matched, _ := regexp.MatchString(".*"+b, string(out)); !matched {
fmt.Fprintf(os.Stderr, "%s is not running\n", b)
os.Exit(1)
}
}
for _, c := range confPath {
if _, err := os.Stat(c); os.IsNotExist(err) {
fmt.Fprintf(os.Stderr, "config file %s does not exist\n", c)
os.Exit(1)
}
}
}
func prettyPrint(r *check.Controls, summary check.Summary) {
colors := map[check.State]*color.Color{
check.PASS: color.New(color.FgGreen),
check.FAIL: color.New(color.FgRed),
check.WARN: color.New(color.FgYellow),
}
// Print checks and results.
fmt.Printf("[INFO] %s %s\n", r.ID, r.Text)
for _, g := range r.Groups {
fmt.Printf("[INFO] %s %s\n", g.ID, g.Text)
for _, c := range g.Checks {
colors[c.State].Printf("[%s] ", c.State)
fmt.Printf("%s %s\n", c.ID, c.Text)
}
}
fmt.Println()
// Print remediations.
if summary.Fail > 0 || summary.Warn > 0 {
colors[check.WARN].Printf("== Remediations ==\n")
for _, g := range r.Groups {
for _, c := range g.Checks {
if c.State != check.PASS {
fmt.Printf("%s %s\n", c.ID, c.Remediation)
}
}
}
fmt.Println()
}
// Print summary setting output color to highest severity.
var res check.State
if summary.Fail > 0 {
res = check.FAIL
} else if summary.Warn > 0 {
res = check.WARN
} else {
res = check.PASS
}
colors[res].Printf("== Summary ==\n")
fmt.Printf("%d checks PASS\n%d checks FAIL\n%d checks WARN\n",
summary.Pass, summary.Fail, summary.Warn,
)
}

41
cmd/federated.go
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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"github.com/aquasecurity/kubernetes-bench-security/check"
"github.com/spf13/cobra"
)
// nodeCmd represents the node command
var federatedCmd = &cobra.Command{
Use: "federated",
Short: "Checks for Kubernetes federated deployment.",
Long: `Checks for Kubernetes federated deployment.`,
Run: func(cmd *cobra.Command, args []string) {
runChecks(check.FEDERATED)
},
}
func init() {
federatedCmd.PersistentFlags().StringVarP(&federatedFile,
"file",
"f",
cfgDir+"/federated.yaml",
"Alternative YAML file for federated checks",
)
RootCmd.AddCommand(federatedCmd)
}

41
cmd/master.go
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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"github.com/aquasecurity/kubernetes-bench-security/check"
"github.com/spf13/cobra"
)
// masterCmd represents the master command
var masterCmd = &cobra.Command{
Use: "master",
Short: "Checks for Kubernetes master node.",
Long: `Checks for Kubernetes master node.`,
Run: func(cmd *cobra.Command, args []string) {
runChecks(check.MASTER)
},
}
func init() {
masterCmd.PersistentFlags().StringVarP(&masterFile,
"file",
"f",
cfgDir+"/master.yaml",
"Alternative YAML file for master checks",
)
RootCmd.AddCommand(masterCmd)
}

41
cmd/node.go
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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"github.com/aquasecurity/kubernetes-bench-security/check"
"github.com/spf13/cobra"
)
// nodeCmd represents the node command
var nodeCmd = &cobra.Command{
Use: "node",
Short: "Checks for Kubernetes node.",
Long: `Checks for Kubernetes node.`,
Run: func(cmd *cobra.Command, args []string) {
runChecks(check.NODE)
},
}
func init() {
nodeCmd.PersistentFlags().StringVarP(&nodeFile,
"file",
"f",
cfgDir+"/node.yaml",
"Alternative YAML file for node checks",
)
RootCmd.AddCommand(nodeCmd)
}

106
cmd/root.go
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// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"fmt"
"os"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
var (
cfgDir = os.Getenv("HOME") + "/.cis_kubernetes"
cfgFile string
jsonFmt bool
checkList string
groupList string
masterFile string
nodeFile string
federatedFile string
kubeConfDir string
etcdConfDir string
flannelConfDir string
)
// RootCmd represents the base command when called without any subcommands
var RootCmd = &cobra.Command{
Use: "cis_kubernetes",
Short: "A brief description of your application",
Long: `A longer description that spans multiple lines and likely contains
examples and usage of using your application. For example:
Cobra is a CLI library for Go that empowers applications.
This application is a tool to generate the needed files
to quickly create a Cobra application.`,
}
// Execute adds all child commands to the root command sets flags appropriately.
// This is called by main.main(). It only needs to happen once to the rootCmd.
func Execute() {
if err := RootCmd.Execute(); err != nil {
fmt.Println(err)
os.Exit(-1)
}
}
func init() {
cobra.OnInitialize(initConfig)
RootCmd.PersistentFlags().BoolVar(&jsonFmt, "json", false, "Output results as JSON")
RootCmd.PersistentFlags().StringVarP(&checkList,
"check",
"c",
"",
`A comma-delimited list of checks to run as specified in CIS document. Example --check="1.1.1,1.1.2"`,
)
RootCmd.PersistentFlags().StringVarP(&groupList,
"group",
"g",
"",
`Run all the checks under this comma-delimited list of groups. Example --group="1.1"`,
)
}
// initConfig reads in config file and ENV variables if set.
func initConfig() {
if cfgFile != "" { // enable ability to specify config file via flag
viper.SetConfigFile(cfgFile)
}
viper.SetConfigName("config") // name of config file (without extension)
viper.AddConfigPath(cfgDir) // adding home directory as first search path
viper.SetEnvPrefix("CISK8S")
viper.AutomaticEnv() // read in environment variables that match
// Set defaults
viper.SetDefault("kubeConfDir", "/etc/kubernetes")
viper.SetDefault("etcdConfDir", "/etc/etcd")
viper.SetDefault("flanneldConfDir", "/etc/sysconfig")
viper.SetDefault("masterFile", cfgDir+"/master.yaml")
viper.SetDefault("nodeFile", cfgDir+"/node.yaml")
viper.SetDefault("federatedFile", cfgDir+"/federated.yaml")
// If a config file is found, read it in.
if err := viper.ReadInConfig(); err == nil {
fmt.Println("Using config file:", viper.ConfigFileUsed())
}
}

12
install.sh
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#!/bin/bash
cfgdir="$HOME/.cis_kubernetes"
echo "create cis_kubernetes configuration directory"
mkdir $cfgdir
echo "copy cis_kubernetes configuration file"
cp cfg/config.yaml $cfgdir
echo "copy controls files to configuration directory"
cp cfg/{master,node,federated}.yaml $cfgdir

21
main.go
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@ -0,0 +1,21 @@
// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import "github.com/aquasecurity/kubernetes-bench-security/cmd"
func main() {
cmd.Execute()
}
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