Detections
Analytics
18.10.9.1.7 Ensure 'Choose how BitLocker-protected fixed drives can be recovered: Configure storage of BitLocker recovery information to AD DS' is set to 'Enabled: Backup recovery passwords and key packages'
Information
This policy setting allows you to control how BitLocker-protected fixed data drives are recovered in the absence of the required credentials. This policy setting is applied when you turn on BitLocker.In 'Save BitLocker recovery information to Active Directory Domain Services' choose which BitLocker recovery information to store in AD DS for fixed data drives. If you select 'Backup recovery password and key package', both the BitLocker recovery password and key package are stored in AD DS. Storing the key package supports recovering data from a drive that has been physically corrupted. If you select 'Backup recovery password only', only the recovery password is stored in AD DS.
The recommended state for this setting is: Enabled: Backup recovery passwords and key packages.
Rationale:
Administrators should always have a safe, secure way to access encrypted data in the event users cannot access their data.
Additionally, as with any authentication method, a drive can be compromised by guessing or finding the authentication information used to access the drive.
To use BitLocker, a Data Recovery Agent will need to be configured for fixed drives. To recover a drive will require highly-controlled access to the Data Recovery Agent private key.
Impact:
None - this value is ignored when the checkbox above it (Save BitLocker recovery information to AD DS for fixed data drives) is False (unchecked), as is required in Rule 18.9.11.1.7. If that checkbox is set to True (checked), both recovery passwords and key packages for fixed drives will be saved to AD DS.
Solution
To establish the recommended configuration, set the following Device Configuration Policy to Enabled: Backup recovery passwords and key packages:To access the Device Configuration Policy from the Intune Home page:
Click Devices
Click Configuration profiles
Click Create profile
Select the platform (Windows 10 and later)
Select the profile (Administrative Templates)
Click Create
Enter a Name
Click Next
Configure the following Setting
Path: Computer Configuration/Windows Components/BitLocker Drive Encryption/Fixed Data Drives
Setting Name: Choose how BitLocker-protected fixed drives can be recovered
Configuration: Select Backup recovery passwords and key packages
Select OK
Continue through the Wizard to complete the creation of the profile (profile assignments, applicability etc.)
Note: More than one configuration setting from each of the Configuration profiles (ex: Administrative Templates, Custom etc.) can be added to each Device Configuration Policy.
Note #2: This recommendation can also be set using the Endpoint protection profile using Windows Encryption settings.
Default Value:
BitLocker recovery information for fixed drives is not backed up to AD DS.
See Also
Item Details
References: CSCv7|13.6
Plugin: Windows
Control ID: 87ac0e3f0c9ddcf7826bce516d9867b3898b7611459e77e7524062ddae0911c7