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

From Samsung Android OS 5 with Knox 2.0 Security Technical Implementation Guide

Part of PP-MDF-991000

Associated with: CCI-000366

SV-75749r1_rule The Samsung Knox for Android container must implement the management setting: Account blacklist.

Vulnerability discussion

Blacklisting all email accounts is required so that only white-listed accounts can be configured.SFR ID: FMT_SMF_EXT.1.1 #45

Check content

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

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.

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