Launch configuration is not encrypted

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Metadata

Id: ansible-aws-launch-configuration-is-not-encrypted

Cloud Provider: AWS

Platform: Ansible

Severity: High

Category: Encryption

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Description

Block device volumes in EC2 launch configurations must be encrypted to protect data at rest and prevent exposure of snapshots or AMIs if storage media is compromised.

For Ansible tasks using the community.aws.autoscaling_launch_config or autoscaling_launch_config modules, ensure the volumes list is defined and each volume entry sets encrypted: true (Ansible yes is also acceptable) under ec2_lc.volumes. Ephemeral (instance-store) volumes do not support encryption and are excluded. This rule flags launch configurations missing the volumes property, any volume entries without an encrypted property, or volumes where encrypted is explicitly false.

Example secure configuration for an Ansible autoscaling_launch_config task:

- name: Create launch configuration with encrypted volumes
  community.aws.autoscaling_launch_config:
    name: my-launch-config
    image_id: ami-0123456789abcdef0
    instance_type: t3.medium
    volumes:
      - device_name: /dev/xvda
        volume_size: 50
        volume_type: gp2
        encrypted: true
        delete_on_termination: yes

Compliant Code Examples

- name: note that encrypted volumes are only supported in >= Ansible 2.4 v4
  community.aws.autoscaling_launch_config:
    name: special
    image_id: ami-XXX
    key_name: default
    security_groups: [group, group2]
    instance_type: t1.micro
    volumes:
    - device_name: /dev/sda1
      volume_size: 100
      volume_type: io1
      iops: 3000
      delete_on_termination: true
      encrypted: yes
- name: note that encrypted volumes are only supported in >= Ansible 2.4 v5
  community.aws.autoscaling_launch_config:
    name: special
    image_id: ami-XXX
    key_name: default
    security_groups: [group, group2]
    instance_type: t1.micro
    volumes:
    - device_name: /dev/sda1
      volume_size: 100
      volume_type: io1
      iops: 3000
      delete_on_termination: true
      encrypted: yes

Non-Compliant Code Examples

- name: note that encrypted volumes are only supported in >= Ansible 2.4
  community.aws.autoscaling_launch_config:
    name: special
    image_id: ami-XXX
    key_name: default
    security_groups: ['group', 'group2' ]
    instance_type: t1.micro
    volumes:
    - device_name: /dev/sda1
      volume_size: 100
      volume_type: io1
      iops: 3000
      delete_on_termination: true
      encrypted: no
- name: note that encrypted volumes are only supported in >= Ansible 2.4 v2
  community.aws.autoscaling_launch_config:
    name: special
    image_id: ami-XXX
    key_name: default
    security_groups: ['group', 'group2' ]
    instance_type: t1.micro
    volumes:
    - device_name: /dev/sda1
      volume_size: 100
      volume_type: io1
      iops: 3000
      delete_on_termination: true
- name: note that encrypted volumes are only supported in >= Ansible 2.4 v3
  community.aws.autoscaling_launch_config:
    name: special
    image_id: ami-XXX
    key_name: default
    security_groups: ['group', 'group2' ]
    instance_type: t1.micro