GKE Basic Authentication Enabled

• Query id: 344bf8ab-9308-462b-a6b2-697432e40ba1
• Query name: GKE Basic Authentication Enabled
• Platform: Ansible
• Severity: High
• Category: Insecure Configurations
• URL: Github

Description

GCP - Google Kubernetes Engine (GKE) Basic Authentication must be disabled, which means the username and password provided in the master_auth block must be empty
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - yaml file

#this is a problematic code where the query should report a result(s)
- name: create a cluster1
  google.cloud.gcp_container_cluster:
    name: my-cluster1
    initial_node_count: 2
    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:
      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 cluster3
  google.cloud.gcp_container_cluster:
    name: my-cluster3
    initial_node_count: 2
    master_auth:
      username: ""
    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 cluster4
  google.cloud.gcp_container_cluster:
    name: my-cluster4
    initial_node_count: 2
    master_auth:
      username: cluster_admin
      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 cluster5
  google.cloud.gcp_container_cluster:
    name: my-cluster5
    initial_node_count: 2
    master_auth:
      username: ""
      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

Code samples without security vulnerabilities

Negative test num. 1 - yaml file

#this code is a correct code for which the query should not find any result
- name: create a cluster
  google.cloud.gcp_container_cluster:
    name: my-cluster
    initial_node_count: 2
    master_auth:
      username: ''
      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