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18.9.11.1.7 Ensure 'Choose how BitLocker-protected fixed drives can be recovered: Do not enable BitLocker until recovery information is stored to AD DS for fixed data drives' is set to 'Enabled: False'

Warning! Audit Deprecated

This audit has been deprecated and will be removed in a future update.

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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.

Select the 'Do not enable BitLocker until recovery information is stored in AD DS for fixed data drives' check box if you want to prevent users from enabling BitLocker unless the computer is connected to the domain and the backup of BitLocker recovery information to AD DS succeeds.

Note: If the 'Do not enable BitLocker until recovery information is stored in AD DS for fixed data drives' check box is selected, a recovery password is automatically generated.

The recommended state for this setting is: Enabled: False (unchecked).

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 is the default behavior.

Solution

To establish the recommended configuration, set the following Device Configuration Policy to Do not enable BitLocker until recovery information is stored to AD DS for fixed data drives (unchecked):

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: Uncheck Do not enable BitLocker until recovery information is stored to AD DS for fixed data drives

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 can be enabled on fixed drives without the requirement of storing recovery information to Active Directory first.

See Also

https://workbench.cisecurity.org/files/4161

Item Details

References: CSCv7|13.6

Plugin: Windows

Control ID: 8f7eed798c57756643034265b484329dbe2ff4fe5bf716cfba3c39e6989bda60