API Gateway Method Settings Cache Not Encrypted

• Query id: b7c9a40c-23e4-4a2d-8d39-a3352f10f288
• Query name: API Gateway Method Settings Cache Not Encrypted
• Platform: Terraform
• Severity: High
• Category: Encryption
• URL: Github

Description

API Gateway Method Settings Cache should be encrypted
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - tf file

resource "aws_api_gateway_rest_api" "example" {
  body = jsonencode({
    openapi = "3.0.1"
    info = {
      title   = "example"
      version = "1.0"
    }
    paths = {
      "/path1" = {
        get = {
          x-amazon-apigateway-integration = {
            httpMethod           = "GET"
            payloadFormatVersion = "1.0"
            type                 = "HTTP_PROXY"
            uri                  = "https://ip-ranges.amazonaws.com/ip-ranges.json"
          }
        }
      }
    }
  })

  name = "example"
}

resource "aws_api_gateway_stage" "example" {
  deployment_id = aws_api_gateway_deployment.example.id
  rest_api_id   = aws_api_gateway_rest_api.example.id
  stage_name    = "example"
}

resource "aws_api_gateway_method_settings" "path_specific" {
  rest_api_id = aws_api_gateway_rest_api.example.id
  stage_name  = aws_api_gateway_stage.example.stage_name
  method_path = "path1/GET"

  settings {
    metrics_enabled = true
    logging_level   = "INFO"
    caching_enabled = true
    cache_data_encrypted = false
  }
}
resource "aws_api_gateway_method_settings" "path_specific_2" {
  rest_api_id = aws_api_gateway_rest_api.example.id
  stage_name  = aws_api_gateway_stage.example.stage_name
  method_path = "path1/GET"

  settings {
    metrics_enabled = true
    logging_level   = "INFO"
    caching_enabled = true
  }
}

Code samples without security vulnerabilities

Negative test num. 1 - tf file

resource "aws_api_gateway_rest_api" "example" {
  body = jsonencode({
    openapi = "3.0.1"
    info = {
      title   = "example"
      version = "1.0"
    }
    paths = {
      "/path1" = {
        get = {
          x-amazon-apigateway-integration = {
            httpMethod           = "GET"
            payloadFormatVersion = "1.0"
            type                 = "HTTP_PROXY"
            uri                  = "https://ip-ranges.amazonaws.com/ip-ranges.json"
          }
        }
      }
    }
  })

  name = "example"
}

resource "aws_api_gateway_stage" "example" {
  deployment_id = aws_api_gateway_deployment.example.id
  rest_api_id   = aws_api_gateway_rest_api.example.id
  stage_name    = "example"
}

resource "aws_api_gateway_method_settings" "path_specific" {
  rest_api_id = aws_api_gateway_rest_api.example.id
  stage_name  = aws_api_gateway_stage.example.stage_name
  method_path = "path1/GET"

  settings {
    metrics_enabled = true
    logging_level   = "INFO"
    caching_enabled = true
    cache_data_encrypted = true
  }
}

resource "aws_api_gateway_method_settings" "path_specific_2" {
  rest_api_id = aws_api_gateway_rest_api.example.id
  stage_name  = aws_api_gateway_stage.example.stage_name
  method_path = "path1/GET"

  settings {
    metrics_enabled = true
    logging_level   = "INFO"
  }
}

resource "aws_api_gateway_method_settings" "path_specific_3" {
  rest_api_id = aws_api_gateway_rest_api.example.id
  stage_name  = aws_api_gateway_stage.example.stage_name
  method_path = "path1/GET"

  settings {
    metrics_enabled = true
    logging_level   = "INFO"
    caching_enabled = false
  }
}