18.10.9.1.10 (BL) Ensure 'Configure use of hardware-based encryption for fixed data drives' is set to 'Disabled'

Information

This policy setting allows you to manage BitLocker's use of hardware-based encryption on fixed data drives and specify which encryption algorithms it can use with hardware-based encryption. Using hardware-based encryption can improve performance of drive operations that involve frequent reading or writing of data to the drive.

You can specify additional options that control whether BitLocker software-based encryption is used instead of hardware-based encryption on computers that do not support hardware-based encryption and whether you want to restrict the encryption algorithms and cipher suites used with hardware-based encryption.

The recommended state for this setting is: Disabled

From a security perspective hardware-based encryption may introduce vulnerabilities in the hardware encryption of certain self-encrypting drives (SEDs), if the vendor and/or user has not updated the firmware to remediate the vulnerability. For more information visit

ADV180028 - Security Update Guide - Microsoft - Guidance for configuring BitLocker to enforce software encryption

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Solution

To establish the recommended configuration via GP, set the following UI path to Disabled :

Computer Configuration\Policies\Administrative Templates\Windows Components\BitLocker Drive Encryption\Fixed Data Drives\Configure use of hardware-based encryption for fixed data drives

Note: This Group Policy path is provided by the Group Policy template VolumeEncryption.admx/adml that is included with the Microsoft Windows 8.0 & Server 2012 (non-R2) Administrative Templates (or newer).

Impact:

None - this is the default behavior.

See Also

https://workbench.cisecurity.org/benchmarks/16515