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Nuclei Templates

Azure Virtual Machine Deallocate Alert Not Configured

ID: azure-vm-deallocate-unalerted

Severity: high

Author: princechaddha

Tags: cloud,devops,azure,microsoft,virtual-machines,azure-cloud-config

Description

Section titled “Description”

Ensure that an Azure activity log alert is fired whenever “Deallocate Virtual Machine” events are triggered within your Microsoft Azure cloud account. An Azure activity log alert is 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 Administrative Activity Log "Deallocate Virtual Machine (Microsoft.Compute/virtualMachines)" has "any" Event level, with "any" Status and Event initiated by "any".

YAML Source

Section titled “YAML Source”
id: azure-vm-deallocate-unalerted
info:
  name: Azure Virtual Machine Deallocate Alert Not Configured
  author: princechaddha
  severity: high
  description: |
    Ensure that an Azure activity log alert is fired whenever "Deallocate Virtual Machine" events are triggered within your Microsoft Azure cloud account. An Azure activity log alert is 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 Administrative Activity Log "Deallocate Virtual Machine (Microsoft.Compute/virtualMachines)" has "any" Event level, with "any" Status and Event initiated by "any"`.
  impact: |
    Without an alert for "Deallocate Virtual Machine" events, unauthorized or unintended shutdowns of VMs may occur without detection, leading to potential disruptions and security risks.
  remediation: |
    Configure Azure activity log alerts to detect "Deallocate Virtual Machine" events by setting the alert condition to "Microsoft.Compute/virtualMachines/deallocate/action" and ensuring that alerts trigger notifications appropriately.
  reference:
    - https://docs.microsoft.com/en-us/azure/azure-monitor/platform/alerts-activity-log
  tags: cloud,devops,azure,microsoft,virtual-machines,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.Compute/virtualMachines/deallocate/action"
        negative: true


    extractors:
      - type: dsl
        dsl:
          - 'id + " does not have the correct alert configuration for Deallocate Virtual Machine events"'
# digest: 4b0a004830460221009f1599f6aca8ce9d8c82686aac7e14e2efc1e43c721f1159ecf00f6c51de86eb022100af9cf2e205a44f4a410ec342fec57796d5c61755b54ff10f8b78ebcf9ba143c2:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "cloud/azure/activitylog/azure-vm-deallocate-unalerted.yaml"

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