nuclei-templates/cloud/aws/cloudfront/cloudfront-geo-restriction.yaml

id: cloudfront-geo-restriction

info:
  name: CloudFront Geo Restriction - Not Enabled
  author: DhiyaneshDK
  severity: info
  description: |
    Ensure that geographic restriction is enabled for your Amazon CloudFront CDN distributions in order to allow or block viewers from specific locations (countries) from accessing your web content.
  impact: |
    Not enabling Geo Restriction in CloudFront exposes content to users from unauthorized regions, increasing the risk of content misuse, compliance violations, and potential security threats.
  remediation: |
    Enable Geo Restriction in CloudFront to control access to content based on geographic locations, ensuring only authorized users from designated regions can access specific resources.
  reference:
    - https://www.trendmicro.com/cloudoneconformity-staging/knowledge-base/aws/CloudFront/geo-restriction.html
    - https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/georestrictions.html
  tags: cloud,devops,aws,amazon,cloudfront,aws-cloud-config

variables:
  region: "us-west-2"

flow: |
  code(1)
  for(let DistributionListItemsId of iterate(template.distributions)){
    set("distribution", DistributionListItemsId)
    code(2)
  }

self-contained: true

code:
  - engine:
      - sh
      - bash

    source: |
      aws cloudfront list-distributions --output table --query 'DistributionList.Items[*].Id' --region $region --output json

    extractors:
      - type: json
        name: distributions
        internal: true
        json:
          - '.[]'

  - engine:
      - sh
      - bash

    source: |
        aws cloudfront get-distribution-config --id $distribution --query "DistributionConfig.Restrictions.GeoRestriction.RestrictionType" --region $region --output text

    matchers:
      - type: word
        words:
          - "none"

    extractors:
      - type: dsl
        dsl:
          - '"CloudFront Compress Objects Automatically " + distribution + " is Disabled"'
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