For AI agents: A markdown version of this page is available at https://docs.datadoghq.com/security/code_security/iac_security/iac_rules/ansible-aws-cloudfront-without-minimum-protocol-tls-1-2.md. A documentation index is available at /llms.txt.

CloudFront without minimum protocol TLS 1.2

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Metadata

Id: ansible-aws-cloudfront-without-minimum-protocol-tls-1-2

Provider: AWS

Platform: Ansible

Severity: Medium

Category: Insecure Configurations

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Description

CloudFront distributions must enforce modern TLS for viewer connections to prevent interception and protocol downgrades. The Ansible community.aws.cloudfront_distribution (or cloudfront_distribution) resource must include a viewer_certificate block with minimum_protocol_version set to a TLS 1.2 variant (for example, TLSv1.2_2018 or TLSv1.2_2019).

Tasks that omit viewer_certificate or specify a minimum_protocol_version that is not a TLS 1.2 variant are flagged.

Secure configuration example:

- name: Create CloudFront distribution with TLS 1.2 minimum
  community.aws.cloudfront_distribution:
    state: present
    enabled: yes
    origins:
      - id: myOrigin
        domain_name: origin.example.com
    viewer_certificate:
      acm_certificate_arn: arn:aws:acm:us-east-1:123456789012:certificate/abcd-ef01-2345-6789
      ssl_support_method: sni-only
      minimum_protocol_version: TLSv1.2_2018

Compliant Code Examples

- name: create a distribution with an origin and logging
  community.aws.cloudfront_distribution:
    state: present
    caller_reference: unique test distribution ID
    origins:
      - id: 'my test origin-000111'
        domain_name: www.example.com
        origin_path: /production
        custom_headers:
          - header_name: MyCustomHeaderName
            header_value: MyCustomHeaderValue
    logging:
      enabled: true
      include_cookies: false
      bucket: mylogbucket.s3.amazonaws.com
      prefix: myprefix/
    viewer_certificate:
      minimum_protocol_version: TLSv1.2_2018
    comment: this is a CloudFront distribution with logging

Non-Compliant Code Examples

- name: create a distribution with an origin and logging
  community.aws.cloudfront_distribution:
    state: present
    caller_reference: unique test distribution ID
    origins:
      - id: 'my test origin-000111'
        domain_name: www.example.com
        origin_path: /production
        custom_headers:
          - header_name: MyCustomHeaderName
            header_value: MyCustomHeaderValue
    logging:
      enabled: true
      include_cookies: false
      bucket: mylogbucket.s3.amazonaws.com
      prefix: myprefix/
    viewer_certificate:
      minimum_protocol_version: TLSv1
    comment: this is a CloudFront distribution with logging
- name: create another distribution with an origin and logging
  community.aws.cloudfront_distribution:
    state: present
    caller_reference: unique test distribution ID
    origins:
      - id: 'my test origin-000111'
        domain_name: www.example.com
        origin_path: /production
        custom_headers:
          - header_name: MyCustomHeaderName
            header_value: MyCustomHeaderValue
    logging:
      enabled: true
      include_cookies: false
      bucket: mylogbucket.s3.amazonaws.com
      prefix: myprefix/
    viewer_certificate:
      minimum_protocol_version: TLSv1.1_2016
    comment: this is a CloudFront distribution with logging
- name: create a third distribution
  community.aws.cloudfront_distribution:
    state: present
    caller_reference: unique test distribution ID
    origins:
      - id: 'my test origin-000111'
        domain_name: www.example.com
        origin_path: /production
        custom_headers:
          - header_name: MyCustomHeaderName
            header_value: MyCustomHeaderValue
    logging:
      enabled: true
      include_cookies: false
      bucket: mylogbucket.s3.amazonaws.com
      prefix: myprefix/
    comment: this is a CloudFront distribution with logging