rules:
- id: appservice-enable-https-only
  message: >-
    By default, clients can connect to App Service by using both HTTP or HTTPS. HTTP should be disabled
    enabling the HTTPS
    Only setting.
  patterns:
  - pattern: resource
  - pattern-not-inside: |
      resource "azurerm_app_service" "..." {
      ...
        https_only = true
      ...
      }
  - pattern-either:
    - pattern-inside: |
        resource "azurerm_app_service" "..." {
        ...
        }
    - pattern-inside: |
        resource "azurerm_app_service" "..." {
        ...
          https_only = false
        ...
        }
  metadata:
    cwe:
    - 'CWE-319: Cleartext Transmission of Sensitive Information'
    category: security
    technology:
    - terraform
    - azure
    references:
    - https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/app_service#https_only
    - https://docs.microsoft.com/en-us/azure/app-service/configure-ssl-bindings#enforce-https
    owasp:
    - A03:2017 - Sensitive Data Exposure
    - A02:2021 - Cryptographic Failures
    subcategory:
    - vuln
    likelihood: MEDIUM
    impact: MEDIUM
    confidence: MEDIUM
  languages: [hcl]
  severity: ERROR