API Gateway with open access

이 제품은 선택한 Datadog 사이트에서 지원되지 않습니다. ().
이 페이지는 아직 한국어로 제공되지 않습니다. 번역 작업 중입니다.
현재 번역 프로젝트에 대한 질문이나 피드백이 있으신 경우 언제든지 연락주시기 바랍니다.

Metadata

Id: terraform-aws-api-gateway-with-open-access

Provider: AWS

Platform: Terraform

Severity: Medium

Category: Insecure Configurations

Learn More

Description

API Gateway methods should restrict the authorization type to prevent unauthenticated access, except for the OPTIONS method used in CORS preflight requests. If you configure an API Gateway method without specifying authorization, as shown in the example below, it allows open, unauthenticated access to your API, increasing the risk of data exposure and abuse.

resource "aws_api_gateway_method" "example" {
  http_method   = "GET"
  authorization = "NONE"
  // ...
}

Proper configuration requires setting authorization = "NONE" only for the OPTIONS method. For example:

resource "aws_api_gateway_method" "example" {
  http_method   = "OPTIONS"
  authorization = "NONE"
  // ...
}

This ensures that only preflight CORS requests remain unauthenticated, while all other methods require proper authorization, reducing the attack surface of your API.

Compliant Code Examples

resource "aws_api_gateway_method" "negative1" {
  rest_api_id   = aws_api_gateway_rest_api.this.id
  resource_id   = aws_api_gateway_resource.this.id
  http_method   = "OPTIONS"
  authorization = "NONE"
  authorizer_id = aws_api_gateway_authorizer.this.id

  request_parameters = {
    "method.request.path.proxy" = true
  }
}

Non-Compliant Code Examples

resource "aws_api_gateway_method" "positive1" {
  rest_api_id   = aws_api_gateway_rest_api.this.id
  resource_id   = aws_api_gateway_resource.this.id
  http_method   = "GET"
  authorization = "NONE"
  authorizer_id = aws_api_gateway_authorizer.this.id

  request_parameters = {
    "method.request.path.proxy" = true
  }
}