API Gateway stage without usage plan associated

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Metadata

Id: cloudformation-aws-api-gateway-stage-without-api-gateway-usage-plan-associated

Provider: AWS

Platform: CloudFormation

Severity: Low

Category: Resource Management

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Provider Reference

Description

API Gateway stages must be associated with an API Gateway usage plan to enforce throttling and quota limits and enable API key–based access control. Without a usage plan, a stage is vulnerable to abusive clients, excessive request rates, service exhaustion, and unexpected costs.

Verify the template includes an AWS::ApiGateway::UsagePlan resource and that its Properties.ApiStages array contains an entry where:

ApiId equals the stage’s RestApiId
Stage equals the stage’s StageName

Resources missing a usage plan or whose usage plan ApiStages does not include a matching ApiId/Stage pair will be flagged. Use intrinsic references so values match, for example:

MyApi:
  Type: AWS::ApiGateway::RestApi

MyStage:
  Type: AWS::ApiGateway::Stage
  Properties:
    RestApiId: !Ref MyApi
    StageName: prod

MyUsagePlan:
  Type: AWS::ApiGateway::UsagePlan
  Properties:
    UsagePlanName: MyUsagePlan
    ApiStages:
      - ApiId: !Ref MyApi
        Stage: !Ref MyStage

Compliant Code Examples

AWSTemplateFormatVersion: "2010-09-09"
Description: "Router53"
Resources:
  Prod:
    Type: AWS::ApiGateway::Stage
    Properties:
      StageName: Prod
      Description: Prod Stage
      RestApiId: !Ref MyRestApi
      DeploymentId: !Ref TestDeployment
      DocumentationVersion: !Ref MyDocumentationVersion
      ClientCertificateId: !Ref ClientCertificate
      Variables:
        Stack: Prod
      MethodSettings:
        - ResourcePath: /
          HttpMethod: GET
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
        - ResourcePath: /stack
          HttpMethod: POST
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
          ThrottlingBurstLimit: '999'
        - ResourcePath: /stack
          HttpMethod: GET
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
          ThrottlingBurstLimit: '555'
  usagePlan:
    Type: 'AWS::ApiGateway::UsagePlan'
    Properties:
      ApiStages:
        - ApiId: !Ref MyRestApi
          Stage: !Ref Prod
      Description: Customer ABC's usage plan
      Quota:
        Limit: 5000
        Period: MONTH
      Throttle:
        BurstLimit: 200
        RateLimit: 100
      UsagePlanName: Plan_ABC

Non-Compliant Code Examples

AWSTemplateFormatVersion: "2010-09-09"
Description: "Router53"
Resources:
  Prod:
    Type: AWS::ApiGateway::Stage
    Properties:
      StageName: Prod
      Description: Prod Stage
      RestApiId: !Ref MyRestApi
      DeploymentId: !Ref TestDeployment
      DocumentationVersion: !Ref MyDocumentationVersion
      ClientCertificateId: !Ref ClientCertificate
      Variables:
        Stack: Prod
      MethodSettings:
        - ResourcePath: /
          HttpMethod: GET
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
        - ResourcePath: /stack
          HttpMethod: POST
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
          ThrottlingBurstLimit: '999'
        - ResourcePath: /stack
          HttpMethod: GET
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
          ThrottlingBurstLimit: '555'

AWSTemplateFormatVersion: "2010-09-09"
Description: "Router53"
Resources:
  Prod1:
    Type: AWS::ApiGateway::Stage
    Properties:
      StageName: Prod
      Description: Prod Stage
      RestApiId: !Ref MyRestApi
      DeploymentId: !Ref TestDeployment
      DocumentationVersion: !Ref MyDocumentationVersion
      ClientCertificateId: !Ref ClientCertificate
      Variables:
        Stack: Prod
      MethodSettings:
        - ResourcePath: /
          HttpMethod: GET
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
        - ResourcePath: /stack
          HttpMethod: POST
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
          ThrottlingBurstLimit: '999'
        - ResourcePath: /stack
          HttpMethod: GET
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
          ThrottlingBurstLimit: '555'
  usagePlan1:
    Type: 'AWS::ApiGateway::UsagePlan'
    Properties:
      ApiStages:
        - ApiId: !Ref MyRestApi
          Stage: !Ref Prod1
      Description: Customer ABC's usage plan
      Quota:
        Limit: 5000
        Period: MONTH
      Throttle:
        BurstLimit: 200
        RateLimit: 100
      UsagePlanName: Plan_ABC

AWSTemplateFormatVersion: "2010-09-09"
Description: "Router53"
Resources:
  Prod2:
    Type: AWS::ApiGateway::Stage
    Properties:
      StageName: Prod
      Description: Prod Stage
      RestApiId: !Ref MyRestApi1
      DeploymentId: !Ref TestDeployment
      DocumentationVersion: !Ref MyDocumentationVersion
      ClientCertificateId: !Ref ClientCertificate
      Variables:
        Stack: Prod
      MethodSettings:
        - ResourcePath: /
          HttpMethod: GET
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
        - ResourcePath: /stack
          HttpMethod: POST
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
          ThrottlingBurstLimit: '999'
        - ResourcePath: /stack
          HttpMethod: GET
          MetricsEnabled: 'true'
          DataTraceEnabled: 'false'
          ThrottlingBurstLimit: '555'
  usagePlan2:
    Type: 'AWS::ApiGateway::UsagePlan'
    Properties:
      ApiStages:
        - ApiId: !Ref MyRestApi
          Stage: !Ref Prod
      Description: Customer ABC's usage plan
      Quota:
        Limit: 5000
        Period: MONTH
      Throttle:
        BurstLimit: 200
        RateLimit: 100
      UsagePlanName: Plan_ABC