azure-appservice-ftps-only-not-enabled: Azure App Service FTPS-Only Access Not Enabled

id: azure-appservice-ftps-only-not-enabled
info:
  name: Azure App Service FTPS-Only Access Not Enabled
  author: princechaddha
  severity: medium
  description: |
    Ensure that your Azure App Services web applications enforce FTPS-only access to encrypt FTP traffic. FTPS (Secure FTP) is used to enhance security for your Azure web application as it adds an extra layer of security to the FTP protocol, and help you to comply with the industry standards and regulations.
  impact: |
    Enabling FTPS-only access enhances the security by encrypting data transfer, thus reducing the risk of data interception and compliance violations.
  remediation: |
    Configure the Azure App Services to enforce FTPS-only access in the Azure portal or use Azure CLI commands to modify the FTPS settings.
  reference:
    - https://docs.microsoft.com/en-us/azure/app-service/configure-ftp
  tags: cloud,devops,azure,microsoft,appservice,azure-cloud-config

flow: |
  code(1);
  for (let WebAppId of iterate(template.webAppIdList)) {
    set("id", WebAppId);
    code(2);
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      az webapp list --output json --query '[*].id'

    extractors:
      - type: json
        name: webAppIdList
        internal: true
        json:
          - '.[]'

  - engine:
      - sh
      - bash
    source: |
      az webapp config show --ids $id --query 'ftpsState' --output json

    matchers:
      - type: word
        words:
          - "AllAllowed"

    extractors:
      - type: dsl
        dsl:
          - 'id + " does not enforce FTPS-only access"'
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