azure-sql-fw-rule-unalerted: Azure SQL Server Firewall Rule Create/Update/Delete Alert Not Configured

id: azure-sql-fw-rule-unalerted
info:
  name: Azure SQL Server Firewall Rule Create/Update/Delete Alert Not Configured
  author: princechaddha
  severity: high
  description: |
    Ensure that an Azure activity log alert is fired whenever “Create”, “Update” or “Delete SQL Server Firewall Rule” events are triggered in your Microsoft Azure cloud account. Activity log alerts get activated when a new activity log event that matches the condition specified in the alert occurs. In this case, the condition required for the alert is 'Whenever the Administrative Activity Log "Create/Update/Delete server firewall rule (Microsoft.Sql/servers/firewallRules)" has "any" level, with "any" status and event is initiated by "any"'.
  impact: |
    Not having alerts for Create, Update, or Delete SQL Server Firewall Rule events can allow unauthorized changes to go unnoticed, leading to potential security vulnerabilities in database access management.
  remediation: |
    Configure activity log alerts to monitor "Create, Update, or Delete SQL Server Firewall Rule" events by setting the alert condition to "Microsoft.Sql/servers/firewallRules/write" and attaching an action group to handle notifications.
  reference:
    - https://docs.microsoft.com/en-us/azure/azure-monitor/platform/alerts-activity-log
  tags: cloud,devops,azure,microsoft,sql-server,azure-cloud-config

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

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      az monitor activity-log alert list --output json --query '[?(enabled==`true`)].id'

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

  - engine:
      - sh
      - bash
    source: |
      az monitor activity-log alert show --ids "$id" --query 'condition'

    matchers-condition: and
    matchers:
      - type: word
        words:
          - '"field": "operationName"'

      - type: word
        words:
          - "Microsoft.Sql/servers/firewallRules/write"
        negative: true

    extractors:
      - type: dsl
        dsl:
          - 'id + " does not have the correct alert configuration for Create/Update/Delete SQL Server Firewall Rule events"'
# digest: 4a0a00473045022036e57492028a4d27bddd6dee99a05a807c31c7fd468ac8f3bc4b88156674086b0221009812cbed501f180475f59147ff99aa4eb1e3e06a96d0dd095cab734cecc3c301:922c64590222798bb761d5b6d8e72950