vpc-endpoints-not-deployed: VPC Endpoints Not Deployed

id: vpc-endpoints-not-deployed
info:
  name: VPC Endpoints Not Deployed
  author: princechaddha
  severity: medium
  description: |
    Ensures VPC endpoints are utilized for secure AWS service connectivity without needing an Internet Gateway, enhancing network security and efficiency.
  impact: |
    Avoids data exposure and reduces bandwidth use by ensuring AWS traffic remains within the AWS network, without public IP requirements for EC2 instances.
  remediation: |
    Implement VPC endpoints for supported AWS services to secure and optimize connectivity within your VPC, minimizing external access risks.
  reference:
    - https://docs.aws.amazon.com/vpc/latest/userguide/vpc-endpoints.html
  metadata:
    max-request: 2
  tags: cloud,devops,aws,amazon,vpc,aws-cloud-config
variables:
  region: "us-east-1"

flow: |
  code(1)
  for(let VpcIds of iterate(template.VpcId)){
    set("vpc", VpcIds)
    code(2)
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      aws ec2 describe-vpcs --region $region --query 'Vpcs[*].VpcId' --output json

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

  - engine:
      - sh
      - bash
    source: |
         aws ec2 describe-vpc-endpoints --region $region --filters Name=vpc-id,Values=$vpc --query 'VpcEndpoints[*].VpcEndpointId'

    matchers:
      - type: word
        words:
          - "[]"

    extractors:
      - type: dsl
        dsl:
          - '"VPC Endpoints Not Deployed in the VPC network " + vpc'
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