azure-keyvault-audit-not-enabled: Enable AuditEvent Logging for Azure Key Vaults

id: azure-keyvault-audit-not-enabled
info:
  name: Enable AuditEvent Logging for Azure Key Vaults
  author: princechaddha
  severity: medium
  description: |
    Ensure that AuditEvent logging is enabled for all Azure Key Vault instances in order to record any interactions with your vaults for enhancing data protection and compliance within your Azure cloud account. With Azure Key Vault, you can safeguard encryption keys and application secrets like passwords using keys stored in Hardware Security Modules (HSMs).
  impact: |
    Lack of AuditEvent logging can hinder incident detection and increase the risk of unauthorized access without traceability.
  remediation: |
    Enable the AuditEvent logging for Azure Key Vaults to ensure all access and operations are logged, enhancing security and compliance.
  reference:
    - https://docs.microsoft.com/en-us/azure/key-vault/general/overview-security
  tags: cloud,devops,azure,microsoft,keyvault,azure-cloud-config

flow: |
  code(1);
  for (let VaultData of iterate(template.vaultNames)) {
    set("vaultName", VaultData);
    code(2);
  }

self-contained: true
code:
  - engine:
      - sh
      - bash
    source: |
      az keyvault list --query '[*].id' --output json

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

  - engine:
      - sh
      - bash
    source: |
      az monitor diagnostic-settings list --resource $vaultName --query '[*].logs | []' --output json

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

    extractors:
      - type: dsl
        dsl:
          - 'vaultName + " does not have AuditEvent logging enabled"'
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