Guide to the Secure Configuration of Red Hat OpenShift Container Platform 4

Profile Title	CIS Red Hat OpenShift Container Platform 4 Benchmark
Profile ID	xccdf_org.ssgproject.content_profile_cis-node-1-4

Rule Configure A Unique CA Certificate for etcd [ref]

A unique CA certificate should be created for etcd. OpenShift by default creates separate PKIs for etcd and the Kubernetes API server. The same is done for other points of communication in the cluster.

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Kubernetes API server and etcd utilize separate CA certificates in OpenShift. This ensures that the etcd data is still protected in the event that the API server CA is compromised.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_etcd_unique_ca

Identifiers:

CCE-87514-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	2.7
pcidss4	2.2.1, 2.2

Rule Disable Anonymous Authentication to the Kubelet [ref]

By default, anonymous access to the Kubelet server is enabled. This configuration check ensures that anonymous requests to the Kubelet server are disabled. Edit the Kubelet server configuration file /etc/kubernetes/kubelet.conf on the kubelet node(s) and set the below parameter:

authentication:
  ...
  anonymous:
    enabled: false
  ...

Rationale:

When enabled, requests that are not rejected by other configured authentication methods are treated as anonymous requests. These requests are then served by the Kubelet server. OpenShift Operators should rely on authentication to authorize access and disallow anonymous requests.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_anonymous_auth

Identifiers:

CCE-83815-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.2
bsi	APP.4.4.A3
pcidss4	2.2.1, 2.2

Rule Ensure authorization is set to Webhook [ref]

Unauthenticated/unauthorized users should have no access to OpenShift nodes. The Kubelet should be set to only allow Webhook authorization. To ensure that the Kubelet requires authorization, validate that authorization is configured to Webhook in /etc/kubernetes/kubelet.conf:

authorization:
  mode: Webhook
  ...

Rationale:

Ensuring that the authorization is configured correctly helps enforce that unauthenticated/unauthorized users have no access to OpenShift nodes.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_authorization_mode

Identifiers:

CCE-83593-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.3
pcidss4	2.2.1, 2.2

Rule kubelet - Configure the Client CA Certificate [ref]

By default, the kubelet is not configured with a CA certificate which can subject the kubelet to man-in-the-middle attacks. To configure a client CA certificate, edit the kubelet configuration file /etc/kubernetes/kubelet.conf on the kubelet node(s) and set the below parameter:

authentication:
...
  x509:
    clientCAFile: /etc/kubernetes/kubelet-ca.crt
...

Rationale:

Not having a CA certificate for the kubelet will subject the kubelet to possible man-in-the-middle attacks especially on unsafe or untrusted networks. Certificate validation for the kubelet allows the API server to validate the kubelet's identity.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_configure_client_ca

Identifiers:

CCE-83724-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.4
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Kubelet - Ensure Event Creation Is Configured [ref]

Security relevant information should be captured. The eventRecordQPS Kubelet option can be used to limit the rate at which events are gathered. Setting this too low could result in relevant events not being logged, however the unlimited setting of 0 could result in a denial of service on the kubelet. Processing and storage systems should be scaled to handle the expected event load. To set the eventRecordQPS option for the kubelet, create a KubeletConfig option along these lines:

apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
metadata:
   name: kubelet-config-$pool
spec:
    machineConfigPoolSelector:
        matchLabels:
            pools.operator.machineconfiguration.openshift.io/$pool_name: ""
    kubeletConfig:
        eventRecordQPS: 50

Warning: The MachineConfig Operator does not merge KubeletConfig objects, the last object is used instead. In case you need to set multiple options for kubelet, consider putting all the custom options into a single KubeletConfig object.

Rationale:

It is important to capture all events and not restrict event creation. Events are an important source of security information and analytics that ensure that your environment is consistently monitored using the event data.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_configure_event_creation

Identifiers:

CCE-83576-9

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.8
pcidss4	2.2.1, 2.2

Remediation Kubernetes snippet ⇲

---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    eventRecordQPS: {{.var_event_record_qps}}

Rule Ensure that the Kubelet only makes use of Strong Cryptographic Ciphers [ref]

Ensure that the Kubelet is configured to only use strong cryptographic ciphers. To set the cipher suites for the kubelet, create new or modify existing KubeletConfig object along these lines, one for every MachineConfigPool:

  apiVersion: machineconfiguration.openshift.io/v1
  kind: KubeletConfig
  metadata:
     name: kubelet-config-$pool
  spec:
      machineConfigPoolSelector:
          matchLabels:
              pools.operator.machineconfiguration.openshift.io/$pool_name: ""
      kubeletConfig:
        tlsCipherSuites:
        - TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
        - TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
        - TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
        - TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
        - TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
        - TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256

In order to configure this rule to check for an alternative cipher, both var_kubelet_tls_cipher_suites_regex and var_kubelet_tls_cipher_suites have to be set

Rationale:

TLS ciphers have had a number of known vulnerabilities and weaknesses, which can reduce the protection provided by them. By default Kubernetes supports a number of TLS ciphersuites including some that have security concerns, weakening the protection provided.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_configure_tls_cipher_suites

Identifiers:

CCE-86030-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.12
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Remediation Kubernetes snippet ⇲

---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    tlsCipherSuites: [{{.var_kubelet_tls_cipher_suites}}]

Rule kubelet - Enable Certificate Rotation [ref]

To enable the kubelet to rotate client certificates, edit the kubelet configuration file /etc/kubernetes/kubelet.conf on the kubelet node(s) and set the below parameter:

...
rotateCertificates: true
...

Rationale:

Allowing the kubelet to auto-update the certificates ensure that there is no downtime in certificate renewal as well as ensures confidentiality and integrity.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_enable_cert_rotation

Identifiers:

CCE-83838-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.10
pcidss4	2.2.1, 2.2

Rule kubelet - Enable Client Certificate Rotation [ref]

To enable the kubelet to rotate client certificates, edit the kubelet configuration file /etc/kubernetes/kubelet.conf on the kubelet node(s) and set the below parameter:

featureGates:
...
  RotateKubeletClientCertificate: true
...

Rationale:

Allowing the kubelet to auto-update the certificates ensure that there is no downtime in certificate renewal as well as ensures confidentiality and integrity.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_enable_client_cert_rotation

Identifiers:

CCE-83352-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.10
pcidss4	2.2.1, 2.2

Rule kubelet - Allow Automatic Firewall Configuration [ref]

The kubelet has the ability to automatically configure the firewall to allow the containers required ports and connections to networking resources and destinations parameters potentially creating a security incident. To allow the kubelet to modify the firewall, edit the kubelet configuration file /etc/kubernetes/kubelet.conf on the kubelet node(s) and set the below parameter:

makeIPTablesUtilChains: true

Rationale:

The kubelet should automatically configure the firewall settings to allow access and networking traffic through. This ensures that when a pod or container is running that the correct ports are configured as well as removing the ports when a pod or container is no longer in existence.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_enable_iptables_util_chains

Identifiers:

CCE-83775-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.7
pcidss4	2.2.1, 2.2

Remediation Kubernetes snippet ⇲

---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    makeIPTablesUtilChains: true

Rule kubelet - Enable Server Certificate Rotation [ref]

To enable the kubelet to rotate server certificates, edit the kubelet configuration file /etc/kubernetes/kubelet.conf on the kubelet node(s) and set the below parameter:

serverTLSBootstrap: true

Rationale:

Allowing the kubelet to auto-update the certificates ensure that there is no downtime in certificate renewal as well as ensures confidentiality and integrity.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_enable_server_cert_rotation

Identifiers:

CCE-83356-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.11
pcidss4	2.2.1, 2.2

Rule kubelet - Do Not Disable Streaming Timeouts [ref]

Timouts for streaming connections should not be disabled as they help to prevent denial-of-service attacks. To configure streaming connection timeouts To set the streamingConnectionIdleTimeout option for the kubelet, create a KubeletConfig option along these lines:

apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
metadata:
   name: kubelet-config-$pool
spec:
    machineConfigPoolSelector:
        matchLabels:
            pools.operator.machineconfiguration.openshift.io/$pool_name: ""
    kubeletConfig:
        streamingConnectionIdleTimeout: 4h0m0s

Rationale:

Ensuring connections have timeouts helps to protect against denial-of-service attacks as well as disconnect inactive connections. In addition, setting connections timeouts helps to prevent from running out of ephemeral ports.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_enable_streaming_connections

Identifiers:

CCE-84097-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.2.6
pcidss4	2.2.1, 2.2

Remediation Kubernetes snippet ⇲

---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    streamingConnectionIdleTimeout: {{.var_streaming_connection_timeouts}}

Rule Ensure Eviction threshold Settings Are Set - evictionHard: imagefs.available [ref]

Two types of garbage collection are performed on an OpenShift Container Platform node:

Container garbage collection: Removes terminated containers.
Image garbage collection: Removes images not referenced by any running pods.

Container garbage collection can be performed using eviction thresholds. Image garbage collection relies on disk usage as reported by cAdvisor on the node to decide which images to remove from the node.

The OpenShift administrator can configure how OpenShift Container Platform performs garbage collection by creating a kubeletConfig object for each Machine Config Pool using any combination of the following:

soft eviction for containers
hard eviction for containers
eviction for images

To configure, follow the directions in the documentation

This rule pertains to the imagefs.available setting of the evictionHard section. Remediation will set field imagefs.available to {{ .var_kubelet_evictionhard_imagefs_available }} based on the variable var_kubelet_evictionhard_imagefs_available.

Rationale:

Garbage collection is important to ensure sufficient resource availability and avoiding degraded performance and availability. In the worst case, the system might crash or just be unusable for a long period of time. Based on your system resources and tests, choose an appropriate threshold value to activate garbage collection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_eviction_thresholds_set_hard_imagefs_available

Identifiers:

CCE-84144-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.3.1, 4.2.1
pcidss4	2.2.1, 2.2

Remediation Kubernetes snippet ⇲

---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    evictionHard:
      imagefs.available: {{.var_kubelet_evictionhard_imagefs_available}}
---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    evictionPressureTransitionPeriod: 0s

Rule Ensure Eviction threshold Settings Are Set - evictionHard: memory.available [ref]

Two types of garbage collection are performed on an OpenShift Container Platform node:

Container garbage collection: Removes terminated containers.
Image garbage collection: Removes images not referenced by any running pods.

Container garbage collection can be performed using eviction thresholds. Image garbage collection relies on disk usage as reported by cAdvisor on the node to decide which images to remove from the node.

The OpenShift administrator can configure how OpenShift Container Platform performs garbage collection by creating a kubeletConfig object for each Machine Config Pool using any combination of the following:

soft eviction for containers
hard eviction for containers
eviction for images

To configure, follow the directions in the documentation

This rule pertains to the memory.available setting of the evictionHard section. Remediation will set field memory.available to {{ .var_kubelet_evictionhard_memory_available }} based on the variable var_kubelet_evictionhard_memory_available.

Rationale:

Garbage collection is important to ensure sufficient resource availability and avoiding degraded performance and availability. In the worst case, the system might crash or just be unusable for a long period of time. Based on your system resources and tests, choose an appropriate threshold value to activate garbage collection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_eviction_thresholds_set_hard_memory_available

Identifiers:

CCE-84135-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.3.1, 4.2.1
pcidss4	2.2.1, 2.2

Remediation Kubernetes snippet ⇲

---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    evictionHard:
      memory.available: {{.var_kubelet_evictionhard_memory_available}}
---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    evictionPressureTransitionPeriod: 0s

Rule Ensure Eviction threshold Settings Are Set - evictionHard: nodefs.available [ref]

Two types of garbage collection are performed on an OpenShift Container Platform node:

Container garbage collection: Removes terminated containers.
Image garbage collection: Removes images not referenced by any running pods.

Container garbage collection can be performed using eviction thresholds. Image garbage collection relies on disk usage as reported by cAdvisor on the node to decide which images to remove from the node.

The OpenShift administrator can configure how OpenShift Container Platform performs garbage collection by creating a kubeletConfig object for each Machine Config Pool using any combination of the following:

soft eviction for containers
hard eviction for containers
eviction for images

To configure, follow the directions in the documentation

This rule pertains to the nodefs.available setting of the evictionHard section. Remediation will set field nodefs.available to {{ .var_kubelet_evictionhard_nodefs_available }} based on the variable var_kubelet_evictionhard_nodefs_available.

Rationale:

Garbage collection is important to ensure sufficient resource availability and avoiding degraded performance and availability. In the worst case, the system might crash or just be unusable for a long period of time. Based on your system resources and tests, choose an appropriate threshold value to activate garbage collection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_eviction_thresholds_set_hard_nodefs_available

Identifiers:

CCE-84138-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.3.1, 4.2.1
pcidss4	2.2.1, 2.2

Remediation Kubernetes snippet ⇲

---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    evictionHard:
      nodefs.available: {{.var_kubelet_evictionhard_nodefs_available}}
---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    evictionPressureTransitionPeriod: 0s

Rule Ensure Eviction threshold Settings Are Set - evictionHard: nodefs.inodesFree [ref]

Two types of garbage collection are performed on an OpenShift Container Platform node:

Container garbage collection: Removes terminated containers.
Image garbage collection: Removes images not referenced by any running pods.

Container garbage collection can be performed using eviction thresholds. Image garbage collection relies on disk usage as reported by cAdvisor on the node to decide which images to remove from the node.

The OpenShift administrator can configure how OpenShift Container Platform performs garbage collection by creating a kubeletConfig object for each Machine Config Pool using any combination of the following:

soft eviction for containers
hard eviction for containers
eviction for images

To configure, follow the directions in the documentation

This rule pertains to the nodefs.inodesFree setting of the evictionHard section. Remediation will set field nodefs.inodesFree to {{ .var_kubelet_evictionhard_nodefs_inodesfree }} based on the variable var_kubelet_evictionhard_nodefs_inodesfree.

Rationale:

Garbage collection is important to ensure sufficient resource availability and avoiding degraded performance and availability. In the worst case, the system might crash or just be unusable for a long period of time. Based on your system resources and tests, choose an appropriate threshold value to activate garbage collection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_kubelet_eviction_thresholds_set_hard_nodefs_inodesfree

Identifiers:

CCE-84141-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.3.1, 4.2.1
pcidss4	2.2.1, 2.2

Remediation Kubernetes snippet ⇲

---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    evictionHard:
      nodefs.inodesFree: {{.var_kubelet_evictionhard_nodefs_inodesfree}}
---
apiVersion: machineconfiguration.openshift.io/v1
kind: KubeletConfig
spec:
  kubeletConfig:
    evictionPressureTransitionPeriod: 0s

Rule Verify Group Who Owns The OpenShift Container Network Interface Files [ref]

To properly set the group owner of /etc/cni/net.d/*, run the command:

$ sudo chgrp root /etc/cni/net.d/*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_cni_conf

Identifiers:

CCE-84025-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OpenShift Controller Manager Kubeconfig File [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/configmaps/controller-manager-kubeconfig/kubeconfig, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/configmaps/controller-manager-kubeconfig/kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes Controller Manager service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Controller Manager's kubeconfig contains information about how the component will access the API server. You should set its file ownership to maintain the integrity of the file.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_controller_manager_kubeconfig

Identifiers:

CCE-84095-9

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.18
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Etcd Database Directory [ref]

To properly set the group owner of /var/lib/etcd/member/, run the command:

$ sudo chgrp root /var/lib/etcd/member/

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

etcd is a highly-available key-value store used by Kubernetes deployments for persistent storage of all of its REST API objects. This data directory should be protected from any unauthorized reads or writes.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_etcd_data_dir

Identifiers:

CCE-83354-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.12
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Etcd Write-Ahead-Log Files [ref]

To properly set the group owner of /var/lib/etcd/member/wal/*, run the command:

$ sudo chgrp root /var/lib/etcd/member/wal/*

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

etcd is a highly-available key-value store used by Kubernetes deployments for persistent storage of all of its REST API objects. This data directory should be protected from any unauthorized reads or writes.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_etcd_data_files

Identifiers:

CCE-83816-9

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.12
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The etcd Member Pod Specification File [ref]

To properly set the group owner of /etc/kubernetes/manifests/etcd-pod.yaml, run the command:

$ sudo chgrp root /etc/kubernetes/manifests/etcd-pod.yaml

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The etcd pod specification file controls various parameters that set the behavior of the etcd service in the master node. etcd is a highly-available key-value store which Kubernetes uses for persistent storage of all of its REST API object. You should restrict its file permissions to maintain the integrity of the file. The file should be writable by only the administrators on the system.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_etcd_member

Identifiers:

CCE-83664-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.8
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Etcd PKI Certificate Files [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/*/*/*/*.crt, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/*/*/*/*.crt

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of certificates as part of its operation. You should verify the ownership of the directory containing the PKI information and all files in that directory to maintain their integrity. The directory and files should be owned by the system administrator.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_etcd_pki_cert_files

Identifiers:

CCE-83890-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.19
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OpenShift SDN Container Network Interface Plugin IP Address Allocations [ref]

To properly set the group owner of /var/lib/cni/networks/openshift-sdn/.*, run the command:

$ sudo chgrp root /var/lib/cni/networks/openshift-sdn/.*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_ip_allocations

Identifiers:

CCE-84211-2

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Kubernetes API Server Pod Specification File [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/kube-apiserver-pod-*/kube-apiserver-pod.yaml, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/kube-apiserver-pod-*/kube-apiserver-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes API Server service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Kubernetes specification file contains information about the configuration of the Kubernetes API Server that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_kube_apiserver

Identifiers:

CCE-83530-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.2
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Kubernetes Controller Manager Pod Specification File [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/kube-controller-manager-pod.yaml, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/kube-controller-manager-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes Controller Manager service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Kubernetes specification file contains information about the configuration of the Kubernetes Controller Manager Server that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_kube_controller_manager

Identifiers:

CCE-83953-0

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.4
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Kubernetes Scheduler Pod Specification File [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/kube-scheduler-pod.yaml, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/kube-scheduler-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes Scheduler service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Kubernetes Specification file contains information about the configuration of the Kubernetes scheduler that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_kube_scheduler

Identifiers:

CCE-83614-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.6
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OpenShift Admin Kubeconfig Files [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/*.kubeconfig, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/*.kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes API server service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

There are various kubeconfig files that can be used by the administrator, defining various settings for the administration of the cluster. These files contain credentials that can be used to control the cluster and are needed for disaster recovery and each kubeconfig points to a different endpoint in the cluster. You should restrict its file permissions to maintain the integrity of the kubeconfig file as an attacker who gains access to these files can take over the cluster.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_master_admin_kubeconfigs

Identifiers:

CCE-84204-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.14
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OpenShift Multus Container Network Interface Plugin Files [ref]

To properly set the group owner of /var/run/multus/cni/net.d/*, run the command:

$ sudo chgrp root /var/run/multus/cni/net.d/*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_multus_conf

Identifiers:

CCE-83818-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OpenShift PKI Certificate Files [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/*/*/*/tls.crt, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/*/*/*/tls.crt

Warning: This rule is only applicable for nodes that run the Kubernetes Control Plane. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of certificates as part of its operation. You should verify the ownership of the directory containing the PKI information and all files in that directory to maintain their integrity. The directory and files should be owned by the system administrator.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_openshift_pki_cert_files

Identifiers:

CCE-83922-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.19
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OpenShift PKI Private Key Files [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/*/*/*/*.key, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/*/*/*/*.key

Warning: This rule is only applicable for nodes that run the Kubernetes Control Plane. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of certificates as part of its operation. You should verify the ownership of the directory containing the PKI information and all files in that directory to maintain their integrity. The directory and files should be owned by root:root.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_openshift_pki_key_files

Identifiers:

CCE-84172-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.19
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OpenShift SDN CNI Server Config [ref]

To properly set the group owner of /var/run/openshift-sdn/cniserver/config.json, run the command:

$ sudo chgrp root /var/run/openshift-sdn/cniserver/config.json

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_openshift_sdn_cniserver_config

Identifiers:

CCE-83605-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OVNKubernetes Socket [ref]

To properly set the group owner of /run/ovn-kubernetes/cni/ovn-cni-server.sock, run the command:

$ sudo chgrp root /run/ovn-kubernetes/cni/ovn-cni-server.sock

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_ovn_cni_server_sock

Identifiers:

CCE-86222-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OVNKubernetes DB files [ref]

To properly set the group owner of /var/lib/ovn/etc/*.db, run the command:

$ sudo chgrp root /var/lib/ovn/etc/*.db

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_ovn_db_files

Identifiers:

CCE-86533-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Open vSwitch Configuration Database [ref]

Check if the group owner of /etc/openvswitch/conf.db is hugetlbfs on architectures other than s390x or openvswitch on s390x.

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_ovs_conf_db

Identifiers:

CCE-88281-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Open vSwitch Configuration Database Lock [ref]

Check if the group owner of /etc/openvswitch/.conf.db.~lock~ is hugetlbfs on architectures other than s390x or openvswitch on s390x.

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_ovs_conf_db_lock

Identifiers:

CCE-90793-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Open vSwitch Process ID File [ref]

Ensure that the file

/var/run/openvswitch/ovs-vswitchd.pid

, is owned by the group

openvswitch

or

hugetlbfs

, depending on your settings and Open vSwitch version.

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID:

xccdf_org.ssgproject.content_rule_file_groupowner_ovs_pid

Identifiers:

CCE-83630-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Open vSwitch Persistent System ID [ref]

Check if the group owner of /etc/openvswitch/system-id.conf is hugetlbfs on architectures other than s390x or openvswitch on x390x.

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_ovs_sys_id_conf

Identifiers:

CCE-85892-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Open vSwitch Daemon PID File [ref]

Ensure that the file

/run/openvswitch/ovs-vswitchd.pid

, is owned by the group

openvswitch

or

hugetlbfs

, depending on your settings and Open vSwitch version.

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID:

xccdf_org.ssgproject.content_rule_file_groupowner_ovs_vswitchd_pid

Identifiers:

CCE-84129-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Open vSwitch Database Server PID [ref]

Ensure that the file

/run/openvswitch/ovsdb-server.pid

, is owned by the group

openvswitch

or

hugetlbfs

, depending on your settings and Open vSwitch version.

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID:

xccdf_org.ssgproject.content_rule_file_groupowner_ovsdb_server_pid

Identifiers:

CCE-84166-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Kubernetes Scheduler Kubeconfig File [ref]

To properly set the group owner of /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/configmaps/scheduler-kubeconfig/kubeconfig, run the command:

$ sudo chgrp root /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/configmaps/scheduler-kubeconfig/kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes Scheduler service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The kubeconfig for the Scheduler contains parameters for the scheduler to access the Kube API. You should set its file ownership to maintain the integrity of the file.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_scheduler_kubeconfig

Identifiers:

CCE-83471-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.16
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift Container Network Interface Files [ref]

To properly set the owner of /etc/cni/net.d/*, run the command:

$ sudo chown root /etc/cni/net.d/*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_cni_conf

Identifiers:

CCE-83460-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift Controller Manager Kubeconfig File [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/configmaps/controller-manager-kubeconfig/kubeconfig, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/configmaps/controller-manager-kubeconfig/kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes Controller Manager service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Controller Manager's kubeconfig contains information about how the component will access the API server. You should set its file ownership to maintain the integrity of the file.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_controller_manager_kubeconfig

Identifiers:

CCE-83904-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.18
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Etcd Database Directory [ref]

To properly set the owner of /var/lib/etcd/member/, run the command:

$ sudo chown root /var/lib/etcd/member/

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

etcd is a highly-available key-value store used by Kubernetes deployments for persistent storage of all of its REST API objects. This data directory should be protected from any unauthorized reads or writes.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_etcd_data_dir

Identifiers:

CCE-83905-0

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.12
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Etcd Write-Ahead-Log Files [ref]

To properly set the owner of /var/lib/etcd/member/wal/*, run the command:

$ sudo chown root /var/lib/etcd/member/wal/*

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

etcd is a highly-available key-value store used by Kubernetes deployments for persistent storage of all of its REST API objects. This data directory should be protected from any unauthorized reads or writes.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_etcd_data_files

Identifiers:

CCE-84010-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.12
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Etcd Member Pod Specification File [ref]

To properly set the owner of /etc/kubernetes/manifests/etcd-pod.yaml, run the command:

$ sudo chown root /etc/kubernetes/manifests/etcd-pod.yaml

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The etcd pod specification file controls various parameters that set the behavior of the etcd service in the master node. etcd is a highly-available key-value store which Kubernetes uses for persistent storage of all of its REST API object. You should restrict its file permissions to maintain the integrity of the file. The file should be writable by only the administrators on the system.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_etcd_member

Identifiers:

CCE-83988-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.8
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Etcd PKI Certificate Files [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/*/*/*/*.crt, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/*/*/*/*.crt

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of certificates as part of its operation. You should verify the ownership of the directory containing the PKI information and all files in that directory to maintain their integrity. The directory and files should be owned by the system administrator.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_etcd_pki_cert_files

Identifiers:

CCE-83898-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.19
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift SDN Container Network Interface Plugin IP Address Allocations [ref]

To properly set the owner of /var/lib/cni/networks/openshift-sdn/.*, run the command:

$ sudo chown root /var/lib/cni/networks/openshift-sdn/.*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ip_allocations

Identifiers:

CCE-84248-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Kubernetes API Server Pod Specification File [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/kube-apiserver-pod-*/kube-apiserver-pod.yaml, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/kube-apiserver-pod-*/kube-apiserver-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes API Server service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Kubernetes specification file contains information about the configuration of the Kubernetes API Server that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_kube_apiserver

Identifiers:

CCE-83372-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.2
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Kubernetes Controller Manager Pod Specification File [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/kube-controller-manager-pod.yaml, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/kube-controller-manager-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes Controller Manager service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Kubernetes specification file contains information about the configuration of the Kubernetes Controller Manager Server that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_kube_controller_manager

Identifiers:

CCE-83795-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.4
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Kubernetes Scheduler Pod Specification File [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/kube-scheduler-pod.yaml, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/kube-scheduler-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes Scheduler service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Kubernetes specification file contains information about the configuration of the Kubernetes scheduler that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_kube_scheduler

Identifiers:

CCE-83393-9

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.6
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift Admin Kubeconfig Files [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/*.kubeconfig, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/*.kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes Control Plane. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

There are various kubeconfig files that can be used by the administrator, defining various settings for the administration of the cluster. These files contain credentials that can be used to control the cluster and are needed for disaster recovery and each kubeconfig points to a different endpoint in the cluster. You should restrict its file permissions to maintain the integrity of the kubeconfig file as an attacker who gains access to these files can take over the cluster.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_master_admin_kubeconfigs

Identifiers:

CCE-83719-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.14
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift Multus Container Network Interface Plugin Files [ref]

To properly set the owner of /var/run/multus/cni/net.d/*, run the command:

$ sudo chown root /var/run/multus/cni/net.d/*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_multus_conf

Identifiers:

CCE-83603-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift PKI Certificate Files [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/*/*/*/tls.crt, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/*/*/*/tls.crt

Warning: This rule is only applicable for nodes that run the Kubernetes Control Plane. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of certificates as part of its operation. You should verify the ownership of the directory containing the PKI information and all files in that directory to maintain their integrity.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_openshift_pki_cert_files

Identifiers:

CCE-83558-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.19
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift PKI Private Key Files [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/*/*/*/*.key, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/*/*/*/*.key

Warning: This rule is only applicable for nodes that run the Kubernetes Control Plane. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of certificates as part of its operation. You should verify the ownership of the directory containing the PKI information and all files in that directory to maintain their integrity. The directory and files should be owned by root:root.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_openshift_pki_key_files

Identifiers:

CCE-83435-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.19
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift SDN CNI Server Config [ref]

To properly set the owner of /var/run/openshift-sdn/cniserver/config.json, run the command:

$ sudo chown root /var/run/openshift-sdn/cniserver/config.json

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_openshift_sdn_cniserver_config

Identifiers:

CCE-83932-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OVNKubernetes Socket [ref]

To properly set the owner of /run/ovn-kubernetes/cni/ovn-cni-server.sock, run the command:

$ sudo chown root /run/ovn-kubernetes/cni/ovn-cni-server.sock

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ovn_cni_server_sock

Identifiers:

CCE-86431-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify Who Owns The OVNKubernetes DB files [ref]

To properly set the owner of /var/lib/ovn/etc/*.db, run the command:

$ sudo chown root /var/lib/ovn/etc/*.db

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ovn_db_files

Identifiers:

CCE-86614-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.10
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Open vSwitch Configuration Database [ref]

To properly set the owner of /etc/openvswitch/conf.db, run the command:

$ sudo chown openvswitch /etc/openvswitch/conf.db

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ovs_conf_db

Identifiers:

CCE-83489-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Open vSwitch Configuration Database Lock [ref]

To properly set the owner of /etc/openvswitch/.conf.db.~lock~, run the command:

$ sudo chown openvswitch /etc/openvswitch/.conf.db.~lock~

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ovs_conf_db_lock

Identifiers:

CCE-83462-2

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Open vSwitch Process ID File [ref]

To properly set the owner of /var/run/openvswitch/ovs-vswitchd.pid, run the command:

$ sudo chown openvswitch /var/run/openvswitch/ovs-vswitchd.pid

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ovs_pid

Identifiers:

CCE-83937-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Open vSwitch Persistent System ID [ref]

To properly set the owner of /etc/openvswitch/system-id.conf, run the command:

$ sudo chown openvswitch /etc/openvswitch/system-id.conf

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ovs_sys_id_conf

Identifiers:

CCE-84085-0

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Open vSwitch Daemon PID File [ref]

To properly set the owner of /run/openvswitch/ovs-vswitchd.pid, run the command:

$ sudo chown openvswitch /run/openvswitch/ovs-vswitchd.pid

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ovs_vswitchd_pid

Identifiers:

CCE-83888-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Open vSwitch Database Server PID [ref]

To properly set the owner of /run/openvswitch/ovsdb-server.pid, run the command:

$ sudo chown openvswitch /run/openvswitch/ovsdb-server.pid

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_ovsdb_server_pid

Identifiers:

CCE-83806-0

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Kubernetes Scheduler Kubeconfig File [ref]

To properly set the owner of /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/configmaps/scheduler-kubeconfig/kubeconfig, run the command:

$ sudo chown root /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/configmaps/scheduler-kubeconfig/kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes Scheduler service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The kubeconfig for the Scheduler contains parameters for the scheduler to access the Kube API. You should set its file ownership to maintain the integrity of the file.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_scheduler_kubeconfig

Identifiers:

CCE-84017-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.16
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OpenShift Container Network Interface Files [ref]

To properly set the permissions of /etc/cni/net.d/*, run the command:

$ sudo chmod 0600 /etc/cni/net.d/*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_cni_conf

Identifiers:

CCE-83379-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OpenShift Controller Manager Kubeconfig File [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/configmaps/controller-manager-kubeconfig/kubeconfig, run the command:

$ sudo chmod 0600 /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/configmaps/controller-manager-kubeconfig/kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes Controller Manager service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The Controller Manager's kubeconfig contains information about how the component will access the API server. You should restrict its file permissions to maintain the integrity of the file. The file should be writable by only the administrators on the system.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_controller_manager_kubeconfig

Identifiers:

CCE-83604-9

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.17
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Etcd Database Directory [ref]

To properly set the permissions of /var/lib/etcd, run the command:

$ sudo chmod 0700 /var/lib/etcd

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

etcd is a highly-available key-value store used by Kubernetes deployments for persistent storage of all of its REST API objects. This data directory should be protected from any unauthorized reads or writes. It should not be readable or writable by any group members or the world.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_etcd_data_dir

Identifiers:

CCE-84013-2

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.11
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Etcd Write-Ahead-Log Files [ref]

To properly set the permissions of /var/lib/etcd/member/wal/*, run the command:

$ sudo chmod 0600 /var/lib/etcd/member/wal/*

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

etcd is a highly-available key-value store used by Kubernetes deployments for persistent storage of all of its REST API objects. This data directory should be protected from any unauthorized reads or writes. It should not be readable or writable by any group members or the world.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_etcd_data_files

Identifiers:

CCE-83382-2

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.11
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Etcd Member Pod Specification File [ref]

To properly set the permissions of /etc/kubernetes/manifests/etcd-pod.yaml, run the command:

$ sudo chmod 0600 /etc/kubernetes/manifests/etcd-pod.yaml

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The etcd pod specification file controls various parameters that set the behavior of the etcd service in the master node. etcd is a highly-available key-value store which Kubernetes uses for persistent storage of all of its REST API object. You should restrict its file permissions to maintain the integrity of the file. The file should be writable by only the administrators on the system.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_etcd_member

Identifiers:

CCE-83973-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.7
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Etcd PKI Certificate Files [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/etcd-*/secrets/*/*.crt, run the command:

$ sudo chmod 0600 /etc/kubernetes/static-pod-resources/etcd-*/secrets/*/*.crt

Warning: This rule is only applicable for nodes that run the Etcd service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of certificate files as part of the operation of its components. The permissions on these files should be set to

or more restrictive to protect their integrity.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_etcd_pki_cert_files

Identifiers:

CCE-83362-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.20
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OpenShift SDN Container Network Interface Plugin IP Address Allocations [ref]

To properly set the permissions of /var/lib/cni/networks/openshift-sdn/*, run the command:

$ sudo chmod 0644 /var/lib/cni/networks/openshift-sdn/*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ip_allocations

Identifiers:

CCE-83469-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Kubernetes API Server Pod Specification File [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/kube-apiserver-pod-*/kube-apiserver-pod.yaml, run the command:

$ sudo chmod 0600 /etc/kubernetes/static-pod-resources/kube-apiserver-pod-*/kube-apiserver-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes API Server service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

If the Kubernetes specification file is writable by a group-owner or the world the risk of its compromise is increased. The file contains the configuration of the Kubernetes API server that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_kube_apiserver

Identifiers:

CCE-83983-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.1
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Kubernetes Controller Manager Pod Specification File [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/kube-controller-manager-pod.yaml, run the command:

$ sudo chmod 0600 /etc/kubernetes/static-pod-resources/kube-controller-manager-pod-*/kube-controller-manager-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes Controller Manager service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

If the Kubernetes specification file is writable by a group-owner or the world the risk of its compromise is increased. The file contains the configuration of an Kubernetes Controller Manager server that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_kube_controller_manager

Identifiers:

CCE-84161-9

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.3
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OpenShift Admin Kubeconfig Files [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/*.kubeconfig, run the command:

$ sudo chmod 0600 /etc/kubernetes/static-pod-resources/kube-apiserver-certs/secrets/node-kubeconfigs/*.kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes Control Plane. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

There are various kubeconfig files that can be used by the administrator, defining various settings for the administration of the cluster. These files contain credentials that can be used to control the cluster and are needed for disaster recovery and each kubeconfig points to a different endpoint in the cluster. You should restrict its file permissions to maintain the integrity of the kubeconfig file as an attacker who gains access to these files can take over the cluster.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_master_admin_kubeconfigs

Identifiers:

CCE-84278-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.13
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OpenShift Multus Container Network Interface Plugin Files [ref]

To properly set the permissions of /var/run/multus/cni/net.d/*, run the command:

$ sudo chmod 0644 /var/run/multus/cni/net.d/*

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_multus_conf

Identifiers:

CCE-83467-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OpenShift PKI Certificate Files [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/kube-*/secrets/*/tls.crt, run the command:

$ sudo chmod 0600 /etc/kubernetes/static-pod-resources/kube-*/secrets/*/tls.crt

Warning: This rule is only applicable for nodes that run the Kubernetes Control Plane. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of certificate files as part of the operation of its components. The permissions on these files should be set to

or more restrictive to protect their integrity.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_openshift_pki_cert_files

Identifiers:

CCE-83552-0

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.20
pcidss4	2.2.1, 2.2, 4.2.1, 4.2

Rule Verify Permissions on the OpenShift PKI Private Key Files [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/*/*/*/*.key, run the command:

$ sudo chmod 0600 /etc/kubernetes/static-pod-resources/*/*/*/*.key

Warning: This rule is only applicable for nodes that run the Kubernetes Control Plane. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

OpenShift makes use of a number of key files as part of the operation of its components. The permissions on these files should be set to

to protect their integrity and confidentiality.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_openshift_pki_key_files

Identifiers:

CCE-83580-1

References:

nerc-cip	CIP-003-8 R1.3, CIP-003-8 R3, CIP-003-8 R3.1, CIP-003-8 R3.2, CIP-003-8 R3.3, CIP-003-8 R5.1.1, CIP-003-8 R5.3, CIP-004-6 R2.2.3, CIP-004-6 R2.3, CIP-007-3 R5.1, CIP-007-3 R5.1.2, CIP-007-3 R5.2, CIP-007-3 R5.3.1, CIP-007-3 R5.3.2, CIP-007-3 R5.3.3
nist	CM-6, CM-6(1), IA-5(2)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.21
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OVNKubernetes socket [ref]

To properly set the permissions of /run/ovn-kubernetes/cni/ovn-cni-server.sock, run the command:

$ sudo chmod 0600 /run/ovn-kubernetes/cni/ovn-cni-server.sock

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ovn_cni_server_sock

Identifiers:

CCE-86069-2

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OVNKubernetes DB files [ref]

To properly set the permissions of /var/lib/ovn/etc/*.db, run the command:

$ sudo chmod 0640 /var/lib/ovn/etc/*.db

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ovn_db_files

Identifiers:

CCE-86653-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Open vSwitch Configuration Database [ref]

To properly set the permissions of /etc/openvswitch/conf.db, run the command:

$ sudo chmod 0640 /etc/openvswitch/conf.db

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ovs_conf_db

Identifiers:

CCE-83788-0

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Open vSwitch Configuration Database Lock [ref]

To properly set the permissions of /etc/openvswitch/.conf.db.~lock~, run the command:

$ sudo chmod 0600 /etc/openvswitch/.conf.db.~lock~

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ovs_conf_db_lock

Identifiers:

CCE-84202-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Open vSwitch Process ID File [ref]

To properly set the permissions of /var/run/openvswitch/ovs-vswitchd.pid, run the command:

$ sudo chmod 0644 /var/run/openvswitch/ovs-vswitchd.pid

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ovs_pid

Identifiers:

CCE-83666-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Open vSwitch Persistent System ID [ref]

To properly set the permissions of /etc/openvswitch/system-id.conf, run the command:

$ sudo chmod 0644 /etc/openvswitch/system-id.conf

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ovs_sys_id_conf

Identifiers:

CCE-83400-2

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Open vSwitch Daemon PID File [ref]

To properly set the permissions of /run/openvswitch/ovs-vswitchd.pid, run the command:

$ sudo chmod 0644 /run/openvswitch/ovs-vswitchd.pid

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ovs_vswitchd_pid

Identifiers:

CCE-83710-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Open vSwitch Database Server PID [ref]

To properly set the permissions of /run/openvswitch/ovsdb-server.pid, run the command:

$ sudo chmod 0644 /run/openvswitch/ovsdb-server.pid

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_ovsdb_server_pid

Identifiers:

CCE-83679-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Kubernetes Scheduler Pod Specification File [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/kube-scheduler-pod.yaml, run the command:

$ sudo chmod 0644 /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/kube-scheduler-pod.yaml

Warning: This rule is only applicable for nodes that run the Kubernetes Scheduler service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

If the Kubernetes specification file is writable by a group-owner or the world the risk of its compromise is increased. The file contains the configuration of an Kubernetes Scheduler service that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_scheduler

Identifiers:

CCE-84057-9

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.5
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Kubernetes Scheduler Kubeconfig File [ref]

To properly set the permissions of /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/configmaps/scheduler-kubeconfig/kubeconfig, run the command:

$ sudo chmod 0600 /etc/kubernetes/static-pod-resources/kube-scheduler-pod-*/configmaps/scheduler-kubeconfig/kubeconfig

Warning: This rule is only applicable for nodes that run the Kubernetes Scheduler service. The aforementioned service is only running on the nodes labeled "master" by default.

Rationale:

The kubeconfig for the Scheduler contains parameters for the scheduler to access the Kube API. You should restrict its file permissions to maintain the integrity of the file. The file should be writable by only the administrators on the system.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_scheduler_kubeconfig

Identifiers:

CCE-83772-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.15
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OpenShift SDN CNI Server Config [ref]

To properly set the permissions of /var/run/openshift-sdn/cniserver/config.json, run the command:

$ sudo chmod 0444 /var/run/openshift-sdn/cniserver/config.json

Rationale:

CNI (Container Network Interface) files consist of a specification and libraries for writing plugins to configure network interfaces in Linux containers, along with a number of supported plugins. Allowing writeable access to the files could allow an attacker to modify the networking configuration potentially adding a rogue network connection.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_perms_openshift_sdn_cniserver_config

Identifiers:

CCE-83927-4

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	1.1.9
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Kubelet Configuration File [ref]

To properly set the group owner of /etc/kubernetes/kubelet.conf, run the command:

$ sudo chgrp root /etc/kubernetes/kubelet.conf

Rationale:

The kubelet configuration file contains information about the configuration of the OpenShift node that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_kubelet_conf

Identifiers:

CCE-84233-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.6
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns the Worker Certificate Authority File [ref]

To properly set the group owner of /etc/kubernetes/kubelet-ca.crt, run the command:

$ sudo chgrp root /etc/kubernetes/kubelet-ca.crt

Rationale:

The worker certificate authority file contains the certificate authority certificate for an OpenShift node that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_worker_ca

Identifiers:

CCE-83440-8

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.8
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The Worker Kubeconfig File [ref]

To properly set the group owner of /var/lib/kubelet/kubeconfig, run the command:

$ sudo chgrp root /var/lib/kubelet/kubeconfig

Rationale:

The worker kubeconfig file contains information about the administrative configuration of the OpenShift cluster that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_worker_kubeconfig

Identifiers:

CCE-83409-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.10
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify Group Who Owns The OpenShift Node Service File [ref]

' To properly set the group owner of /etc/systemd/system/kubelet.service, run the command:

$ sudo chgrp root /etc/systemd/system/kubelet.service

'

Rationale:

The /etc/systemd/system/kubelet.service file contains information about the configuration of the OpenShift node service that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_groupowner_worker_service

Identifiers:

CCE-83975-3

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.2
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Kubelet Configuration File [ref]

To properly set the owner of /var/lib/kubelet/config.json, run the command:

$ sudo chown root /var/lib/kubelet/config.json

Rationale:

The kubelet configuration file contains information about the configuration of the OpenShift node that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_kubelet

Identifiers:

CCE-85900-9

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.6
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Kubelet Configuration File [ref]

To properly set the owner of /etc/kubernetes/kubelet.conf, run the command:

$ sudo chown root /etc/kubernetes/kubelet.conf

Rationale:

The kubelet configuration file contains information about the configuration of the OpenShift node that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_kubelet_conf

Identifiers:

CCE-83976-1

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.6
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns the Worker Certificate Authority File [ref]

To properly set the owner of /etc/kubernetes/kubelet-ca.crt, run the command:

$ sudo chown root /etc/kubernetes/kubelet-ca.crt

Rationale:

The worker certificate authority file contains the certificate authority certificate for an OpenShift node that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_worker_ca

Identifiers:

CCE-83495-2

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.8
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The Worker Kubeconfig File [ref]

To properly set the owner of /var/lib/kubelet/kubeconfig, run the command:

$ sudo chown root /var/lib/kubelet/kubeconfig

Rationale:

The worker kubeconfig file contains information about the administrative configuration of the OpenShift cluster that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_worker_kubeconfig

Identifiers:

CCE-83408-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.10
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify User Who Owns The OpenShift Node Service File [ref]

' To properly set the owner of /etc/systemd/system/kubelet.service, run the command:

$ sudo chown root /etc/systemd/system/kubelet.service

'

Rationale:

The /etc/systemd/system/kubelet.service file contains information about the configuration of the OpenShift node service that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_owner_worker_service

Identifiers:

CCE-84193-2

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.2
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify Permissions on The Kubelet Configuration File [ref]

To properly set the permissions of /etc/kubernetes/kubelet.conf, run the command:

$ sudo chmod 0644 /etc/kubernetes/kubelet.conf

Rationale:

If the kubelet configuration file is writable by a group-owner or the world the risk of its compromise is increased. The file contains the configuration of an OpenShift node that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_kubelet_conf

Identifiers:

CCE-83470-5

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.5
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Worker Certificate Authority File [ref]

To properly set the permissions of /etc/kubernetes/kubelet-ca.crt, run the command:

$ sudo chmod 0644 /etc/kubernetes/kubelet-ca.crt

Rationale:

If the worker certificate authority file is writable by a group-owner or the world the risk of its compromise is increased. The file contains the certificate authority certificate for an OpenShift node that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_worker_ca

Identifiers:

CCE-83493-7

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.7
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the Worker Kubeconfig File [ref]

To properly set the permissions of /var/lib/kubelet/kubeconfig, run the command:

$ sudo chmod 0600 /var/lib/kubelet/kubeconfig

Rationale:

If the worker kubeconfig file is writable by a group-owner or the world the risk of its compromise is increased. The file contains the administration configuration of the OpenShift cluster that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_worker_kubeconfig

Identifiers:

CCE-83509-0

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.9
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2

Rule Verify Permissions on the OpenShift Node Service File [ref]

To properly set the permissions of /etc/systemd/system/kubelet.service, run the command:

$ sudo chmod 0644 /etc/systemd/system/kubelet.service

Rationale:

If the /etc/systemd/system/kubelet.service file is writable by a group-owner or the world the risk of its compromise is increased. The file contains the service configuration of the OpenShift node service that is configured on the system. Protection of this file is critical for OpenShift security.

Severity:

medium

Rule ID: xccdf_org.ssgproject.content_rule_file_permissions_worker_service

Identifiers:

CCE-83455-6

References:

nerc-cip	CIP-003-8 R6, CIP-004-6 R3, CIP-007-3 R6.1
nist	CM-6, CM-6(1)
app-srg-ctr	SRG-APP-000516-CTR-001325
cis	4.1.1
bsi	APP.4.4.A17
pcidss4	2.2.1, 2.2