The Samsung Knox for Android container must be configured to implement the management setting: Account blacklist.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-56159	KNOX-39-021300	SV-70413r1_rule		Medium

Description
Blacklisting all email accounts is required so that only white-listed accounts can be configured. SFR ID: FMT_SMF.1.1 #42

STIG	Date
Samsung Android (with Knox 2.x) STIG	2016-02-25

Details

Check Text ( C-56721r2_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 is 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 that 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-56721r2_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 is 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 that 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-61033r1_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.