Azure VM Managed Identity Not Assigned

ID: azure-vm-managed-identity-unassigned

Severity: medium

Author: princechaddha

Tags: cloud,devops,azure,microsoft,vm,azure-cloud-config

Description

Ensure that your Microsoft Azure virtual machines (VMs) have system-assigned managed identities enabled in order to allow secure virtual machine access to Azure resources such as key vaults and storage accounts.

YAML Source

id: azure-vm-managed-identity-unassigned
info:
  name: Azure VM Managed Identity Not Assigned
  author: princechaddha
  severity: medium
  description: |
    Ensure that your Microsoft Azure virtual machines (VMs) have system-assigned managed identities enabled in order to allow secure virtual machine access to Azure resources such as key vaults and storage accounts.
  impact: |
    VMs without system-assigned managed identities may have inadequate security configurations, increasing the risk of unauthorized access to Azure resources.
  remediation: |
    Enable system-assigned managed identities on all Azure VMs to ensure secure access to other Azure services.
  reference:
    - https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/overview
  tags: cloud,devops,azure,microsoft,vm,azure-cloud-config

flow: |
  code(1);
  for (let VMData of iterate(template.vmList)) {
    VMData = JSON.parse(VMData);
    set("ids", VMData.id);
    code(2);
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      az vm list --query '[*].{"id":id}'

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

  - engine:
      - sh
      - bash
    source: |
      az vm show --ids "$ids" --query '{"IdentityConfig": identity}'

    matchers-condition: and
    matchers:
      - type: word
        words:
          - '"IdentityConfig": null'

    extractors:
      - type: dsl
        dsl:
          - 'ids + " does not have a system-assigned managed identity enabled"'
# digest: 490a0046304402206cf13972d1b593fa49201ffeec556d2bbb0100d7a95324a8a7c2ea57a2197218022065dc0cd8afc9d336adedefa0108d79aa1e7df89e78cb6725273ddf1ab248701f:922c64590222798bb761d5b6d8e72950

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.

$ nuclei -u "URL" -t "cloud/azure/virtualmachines/azure-vm-managed-identity-unassigned.yaml"

View on Github