Azure VM Just-In-Time Access Not Enabled

ID: azure-vm-jit-access-not-enabled

Severity: high

Author: princechaddha

Tags: cloud,devops,azure,microsoft,security-center,azure-cloud-config

Description

Ensure that Just-in-Time (JIT) access is enabled for your Azure virtual machines (VMs) in order to allow you to lock down inbound traffic to your VMs and reduce exposure to attacks while providing easy SSH/RDP access when needed.

YAML Source

id: azure-vm-jit-access-not-enabled
info:
  name: Azure VM Just-In-Time Access Not Enabled
  author: princechaddha
  severity: high
  description: |
    Ensure that Just-in-Time (JIT) access is enabled for your Azure virtual machines (VMs) in order to allow you to lock down inbound traffic to your VMs and reduce exposure to attacks while providing easy SSH/RDP access when needed.
  impact: |
    Not having JIT access enabled on Azure VMs can lead to increased exposure to attacks due to unrestricted inbound traffic.
  remediation: |
    Enable Just-in-Time access for your Azure VMs to control inbound traffic and improve security.
  reference:
    - https://docs.microsoft.com/en-us/azure/security-center/security-center-just-in-time
  tags: cloud,devops,azure,microsoft,security-center,azure-cloud-config

flow: |
  code(1);
  for (let VMData of iterate(template.vmList)) {
    VMData = JSON.parse(VMData);
    set("vmId", 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 security jit-policy list --query '[*].virtualMachines[*].{"id":id} | []'

    matchers-condition: and
    matchers:
      - type: word
        words:
          - '[]'

    extractors:
      - type: dsl
        dsl:
          - 'vmId + " does not have Just-in-Time access enabled."'
# digest: 4a0a00473045022100b0c146bf23aa3c6ab2ddfe4bc128e4599120c98030e8487e9488212ee480b8a3022070afc8fa78e484dbf6fe75ff6d1a6d5c27b32d257f90c8cad3a24ce82e5765f4:922c64590222798bb761d5b6d8e72950

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-jit-access-not-enabled.yaml"

View on Github