azure-postgresql-db-update-unalerted: Azure PostgreSQL Database Create/Update Alert Not Configured

id: azure-postgresql-db-update-unalerted
info:
  name: Azure PostgreSQL Database Create/Update Alert Not Configured
  author: princechaddha
  severity: high
  description: |
    Ensure that an Azure activity log alert is fired whenever “Create/Update PostgreSQL Database” events are triggered within your Microsoft Azure cloud account. The log alerts get triggered when a new activity log event that matches the condition specified in the alert configuration occurs. For this conformity rule, the matched condition is "Whenever the Activity Log has an event with Category='Administrative', Signal name='Create/Update PostgreSQL Database (servers/databases)'"
  impact: |
    Without proper alert rules configured for monitoring "Create or Update PostgreSQL Database" events, unauthorized or unwanted changes might go unnoticed, leading to potential security risks.
  remediation: |
    Ensure alert rules are properly configured to monitor and notify on "Create or Update PostgreSQL Database" events by setting the alert condition to "Microsoft.DBforPostgreSQL/servers/databases/write" and ensuring that an action group is attached to manage notifications.
  reference:
    - https://docs.microsoft.com/en-us/azure/azure-monitor/platform/alerts-activity-log
  tags: cloud,devops,azure,microsoft,postgresql,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.DBforPostgreSQL/servers/databases/write"
        negative: true

    extractors:
      - type: dsl
        dsl:
          - 'id + " does not have the correct alert configuration for Create/Update PostgreSQL Database events"'
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