Azure Storage Account Not Using BYOK

ID: azure-storage-byok-not-used

Severity: high

Author: princechaddha

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

Description

Ensure that your Azure Storage accounts are using customer-managed keys (also known as Bring Your Own Keys - BYOKs) instead of service-managed keys (default keys used by Microsoft Azure for data encryption), in order to have a more granular control over your Azure Storage data encryption and decryption process.

YAML Source

id: azure-storage-byok-not-used
info:
  name: Azure Storage Account Not Using BYOK
  author: princechaddha
  severity: high
  description: |
    Ensure that your Azure Storage accounts are using customer-managed keys (also known as Bring Your Own Keys - BYOKs) instead of service-managed keys (default keys used by Microsoft Azure for data encryption), in order to have a more granular control over your Azure Storage data encryption and decryption process.
  impact: |
    Not using BYOK for data encryption in Azure Storage accounts can limit your control over the encryption keys and may not comply with certain regulatory requirements.
  remediation: |
    Configure your Azure Storage accounts to use customer-managed keys (BYOK) for data encryption to ensure compliance and enhanced security.
  reference:
    - https://docs.microsoft.com/en-us/azure/storage/common/storage-encryption-keys-manage
  tags: cloud,devops,azure,microsoft,storage,azure-cloud-config

flow: |
  code(1);
  for (let StorageData of iterate(template.storageList)) {
    StorageData = JSON.parse(StorageData);
    set("name", StorageData.Name);
    code(2);
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      az storage account list --query '[*].{"Name":name}'

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

  - engine:
      - sh
      - bash
    source: |
      az storage account show --name "$name" --query 'encryption.keyVaultProperties.keyName' --output json

    matchers:
      - type: word
        words:
          - ''

    extractors:
      - type: dsl
        dsl:
          - 'name + " Storage Account is not using BYOK"'
# digest: 4a0a00473045022070c8f774c3749a3835b4b35324a83b87fb5cb2f479cb5528f181998e6caa9935022100f504b4196ef4ffd4aa26e10b56530260ecdcb6592afeda757d7acaf9b9889080:922c64590222798bb761d5b6d8e72950

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/storageaccounts/azure-storage-byok-not-used.yaml"

View on Github