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How to Find AWS API Gateway without WAF ACL

Problem​

Potential attacks and / or abuse of service for internet reachable services.

info

This security check is part of the CIS Amazon Web Services Benchmarks and is rated severity medium.

Prerequisites​

This guide assumes that you have already installed and configured Resoto to collect your AWS cloud resources.

Directions​

  1. Execute the following search command in Resoto Shell or Resoto UI:

    > search is(aws_api_gateway_stage) and stage_web_acl_arn==null
    ​kind=aws_api_gateway_stage, ..., region=resoto-poweruser
    ​kind=aws_api_gateway_stage, ..., account=poweruser-team

  2. Pipe the search command into the dump command:

    > search is(aws_api_gateway_stage) and stage_web_acl_arn==null | dump
    ​reported:
    ​  id: /aws/apigateway/123
    ​  name: some-name
    ​  ctime: '2022-12-05T22:53:14Z'
    ​  kind: aws_api_gateway_stage
    ​  age: 2mo28d

    The command output will list the details of all non-compliant aws_api_gateway_stage resources.

  3. Fix detected issues by following the remediation steps:

    Use AWS WAF to protect your API Gateway API from common web exploits, such as SQL injection and cross-site scripting (XSS) attacks. These could affect API availability and performance, compromise security or consume excessive resources.

    note

    Please refer to the AWS API Gateway documentation for details.

Further Reading​