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📝 Azure Storage Account Blob Service Versioning is not enabled 🟢

  • Contextual name: 📝 Blob Service Versioning is not enabled 🟢
  • ID: /ce/ca/azure/storage/blob-versioning
  • Located in: 📁 Azure Storage

Flags​

Our Metadata​

  • Policy Type: BEST_PRACTICE
  • Policy Category:
    • RELIABILITY

Logic​

Description​

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Description​

Enabling blob versioning allows for the automatic retention of previous versions of objects. With blob versioning enabled, earlier versions of a blob are accessible for data recovery in the event of modifications or deletions.

Rationale​

Blob versioning safeguards data integrity and enables recovery by retaining previous versions of stored objects, facilitating quick restoration from accidental deletion, modification, or malicious activity.

Impact​

Enabling blob versioning for a storage account creates a new version with each write operation to a blob, which can increase storage costs. To control these costs, a lifecycle management policy can be applied to automatically delete older versions.

Audit​

This policy flags an Azure Storage Account as INCOMPLIANT if Blob Versioning is set to Disabled.

Default Value​

Blob versioning is disabled by default on storage accounts.

References​

  1. https://learn.microsoft.com/en-us/cli/azure/storage/account
  2. https://learn.microsoft.com/en-us/cli/azure/storage/account/blob-service-properties

... see more

Remediation​

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Remediation​

From Azure Portal​

  1. Go to Storage accounts.
  2. Click the name of a storage account with blob storage.
  3. In the Overview page, on the Properties tab, under Blob service, click Disabled next to Versioning.
  4. Under Tracking, check the box next to Enable versioning for blobs.
  5. Select the radio button next to Keep all versions or Delete versions after (in days).
  6. If selecting to delete versions, enter a number of in the box after which to delete blob versions.
  7. Click Save.
  8. Repeat steps 1-7 for each storage account with blob storage.

From Azure CLI​

For each storage account requiring remediation, run the following command to enable blob versioning:

az storage account blob-service-properties update --account-name <storage-account> --enable-versioning true

From PowerShell​

For each storage account requiring remediation, run the following command to enable blob versioning:

Update-AzStorageBlobServiceProperty -ResourceGroupName <resource-group> -StorageAccountName <storage-account> -IsVersioningEnabled $true

... [see more](remediation.md)

policy.yaml​

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Linked Framework Sections​

SectionSub SectionsInternal RulesPoliciesFlags
💼 CIS Azure v4.0.0 → 💼 10.2.2 Ensure 'Versioning' is set to 'Enabled' on Azure Blob Storage storage accounts (Automated)1
💼 Cloudaware Framework → 💼 Data Protection and Recovery15