IP Aliasing Disabled

• Query id: ed672a9f-fbf0-44d8-a47d-779501b0db05
• Query name: IP Aliasing Disabled
• Platform: Ansible
• Severity: Medium
• Category: Insecure Configurations
• URL: Github

Description

Kubernetes Clusters must be created with Alias IP ranges enabled, which means the attribute 'ip_allocation_policy' must be defined and the subattribute 'use_ip_aliases' must be set to 'yes'.
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - yaml file

- name: create a cluster1
  google.cloud.gcp_container_cluster:
    name: my-cluster1
    initial_node_count: 2
    master_auth:
      username: cluster_admin
      password: my-secret-password
    node_config:
      machine_type: n1-standard-4
      disk_size_gb: 500
    location: us-central1-a
    project: test_project
    auth_kind: serviceaccount
    service_account_file: "/tmp/auth.pem"
    state: present
- name: create a cluster2
  google.cloud.gcp_container_cluster:
    name: my-cluster2
    initial_node_count: 2
    master_auth:
      username: cluster_admin
      password: my-secret-password
    node_config:
      machine_type: n1-standard-4
      disk_size_gb: 500
    location: us-central1-a
    project: test_project
    auth_kind: serviceaccount
    service_account_file: "/tmp/auth.pem"
    state: present
    ip_allocation_policy:
      create_subnetwork: no
- name: create a cluster3
  google.cloud.gcp_container_cluster:
    name: my-cluster3
    initial_node_count: 2
    master_auth:
      username: cluster_admin
      password: my-secret-password
    node_config:
      machine_type: n1-standard-4
      disk_size_gb: 500
    location: us-central1-a
    project: test_project
    auth_kind: serviceaccount
    service_account_file: "/tmp/auth.pem"
    state: present
    ip_allocation_policy:
      create_subnetwork: no
      use_ip_aliases: no

Code samples without security vulnerabilities

Negative test num. 1 - yaml file

- name: create a cluster
  google.cloud.gcp_container_cluster:
    name: my-cluster
    initial_node_count: 2
    master_auth:
      username: cluster_admin
      password: my-secret-password
    node_config:
      machine_type: n1-standard-4
      disk_size_gb: 500
    location: us-central1-a
    project: test_project
    auth_kind: serviceaccount
    service_account_file: /tmp/auth.pem
    state: present
    ip_allocation_policy:
      create_subnetwork: no
      use_ip_aliases: yes