The Samsung KNOX for Android container must have the Account Blacklist configured.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-69705	KNOX-39-021300	SV-84327r1_rule		Medium

Description
Blacklisting all email accounts is required so only whitelisted accounts can be configured. SFR ID: FMT_SMF_EXT.1.1 #45

STIG	Date
Samsung Android OS 6 (with KNOX 2.x) Security Technical Implementation Guide	2016-11-14

Details

Check Text ( C-70147r1_chk )
This validation procedure is performed on both the MDM Administration Console and the Samsung KNOX for Android device. Check whether the appropriate setting is configured on the MDM Administration Console: 1. Ask the MDM administrator to display the "Account blacklist" setting in the "Container Accounts" rule. 2. Verify the setting is configured to all email domains not approved by DoD. Note: All email domains are specified by the wildcard string ".*" On the Samsung KNOX for Android device: 1. Open the KNOX Container. 2. Open "Settings". 3. Select "Accounts". 4. Select "Add account". 5. Select "Email" (and repeat for Microsoft Exchange ActiveSync) and attempt to add an email account with a non-approved domain. 6. Verify the email account cannot be added. If the "Account blacklist" is not properly configured, or if the user is able to successfully configure the non-DoD-approved email account, this is a finding.

Check Text ( C-70147r1_chk )

This validation procedure is performed on both the MDM Administration Console and the Samsung KNOX for Android device.

Check whether the appropriate setting is configured on the MDM Administration Console:
1. Ask the MDM administrator to display the "Account blacklist" setting in the "Container Accounts" rule.
2. Verify the setting is configured to all email domains not approved by DoD.
Note: All email domains are specified by the wildcard string ".*"

On the Samsung KNOX for Android device:
1. Open the KNOX Container.
2. Open "Settings".
3. Select "Accounts".
4. Select "Add account".
5. Select "Email" (and repeat for Microsoft Exchange ActiveSync) and attempt to add an email account with a non-approved domain.
6. Verify the email account cannot be added.

If the "Account blacklist" is not properly configured, or if the user is able to successfully configure the non-DoD-approved email account, this is a finding.

Fix Text (F-75909r1_fix)
Configure the mobile operating system to add email domains not approved by DoD to the account blacklist. On the MDM Administration Console, add all email domains not approved by DoD to the "Account blacklist" setting in the "Container Accounts" rule.