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Samsung Android must be configured to enable Knox Common Criteria (CC) Mode.


Overview

Finding ID Version Rule ID IA Controls Severity
V-93895 KNOX-09-000715 SV-103981r1_rule High
Description
The Knox Platform for Enterprise (KPE) CC Mode feature is a superset of other features and behavioral changes that are mandatory MDFPP requirements. If CC Mode is not implemented, the device will not be operating in the NIAP-certified compliant CC mode of operation. CC Mode implements the following behavioral/functional changes: - FOTA signature verification uses additional SHA-512 signature check. - Download Mode is disabled and all updates will occur via FOTA only. - IKEv1 operates in Main Mode only. - HTTPS audit logging in enabled. - Certificates without a Subject Alternative Name (SAN) field are rejected. - Certificates that do not pass Strict Host Name verification are rejected. - Certificates provided by servers must have the Extended Key Usage field set as Server Authentication. - Allows only authenticated Bluetooth connections. - Additional Key Zeroization is performed. Following is the list of prerequisites the user/MDM has to set in addition to calling CC Mode API to be fully compliant with the MDFPP requirements and the Samsung device Common Criteria certification: - Screen lock type: Alphanumeric or complex of type password, face disabled - Password Attempts: 1 <= value <= 30 and wipe after exceeding - No password recovery and history - Certificate revocation check enabled, OCSP check enabled - Secure start-up or strong protection enabled - SD Card encryption enabled For reference, the STIGIDs for the policies above are as follows: For KPE(AE): - KNOX-09-000710: Enable CC mode - KNOX-09-001440: Minimum password quality - KNOX-09-000500: Disable face - KNOX-09-000430/(KNOX-09-000440): Max password failures for local wipe - KNOX-09-001370/(KNOX-09-001360): Password recovery - KNOX-09-001390/(KNOX-09-001400): Password history length - KNOX-09-001050/(KNOX-09-001040): Revocation check - KNOX-09-001340/(KNOX-09-001330): OCSP check - KNOX-09-001420: Secure Startup - KNOX-09-000980: Enable external storage encryption, or disallow mount physical media For KPE(Legacy): add "5" to the end of the requirement number for above and in addition: - KNOX-09-001475: minimum password quality for workspace Note: STIGIDs listed above not in parentheses are personal space requirements. STIGIDs in parentheses are workspace requirements. SFR ID: FMT_SMF_EXT.1.1 #47
STIG Date
Samsung Android OS 9 with Knox 3.x COPE Use Case KPE(Legacy) Deployment Security Technical Implementation Guide 2020-05-15

Details

Check Text ( C-93213r1_chk )
Review device configuration settings to confirm that Knox CC Mode is enabled.

This procedure is performed on both the MDM Administration console and the Samsung Android device.

On the MDM console, for the device, in the "Knox restrictions" group, verify that "enable CC mode" is selected.

On the Samsung Android device, to verify that CC Mode has not failed, do the following:
1. Open Settings.
2. Tap "About phone".
3. Tap "Software information".
4. Verify that the Security software version for MDF does not display "Disabled".

For Samsung Android devices prior to Galaxy S10, to verify that CC Mode is enabled, do the following:
1. Open Settings.
2. Tap "Biometric and security".
3. Tap "Secure startup".
4. Verify that "Do not require" is disabled.

For Galaxy S10 (or newer devices), to verify that CC Mode is enabled, do the following:
1. Open Settings.
2. Tap "Biometric and security".
3. Verify that "Strong Protection" is enabled and cannot be disabled.

If on the MDM console "enable CC mode" is not selected, or on the Samsung Android device the software version for "MDF" displays "Disabled", or on a Galaxy S10 (or newer device) "Strong Protection" can be disabled, or on a device older than a Galaxy S10 "Do not require" is not disabled, this is a finding.
Fix Text (F-100143r1_fix)
Configure Samsung Android to enable Knox CC Mode.

On the MDM console, for the device, in the "Knox restrictions" group, select "enable CC mode".

The following configuration must also be implemented for the Samsung Android device to be operating in the NIAP-certified compliant CC Mode of operation:
- KNOX-09-001445/(KNOX-09-001475): Minimum password quality
- KNOX-09-000505: Disable face
- KNOX-09-000435/(KNOX-09-000445): Max password failures for local wipe
- KNOX-09-001375/(KNOX-09-001365): Password recovery
- KNOX-09-001395/(KNOX-09-001405): Password history length
- KNOX-09-001055/(KNOX-09-001045): Revocation check
- KNOX-09-001345/(KNOX-09-001335): OCSP check
- KNOX-09-001425: Secure Startup (for devices prior to Galaxy S10)
- KNOX-09-001485: Strong Protection (for Galaxy S10 (or newer) devices)
- KNOX-09-000985: Enable external storage encryption

Note: STIGIDs listed above not in parentheses are personal space requirements. STIGIDs in parentheses are workspace requirements.