Motorola Android Pie must allow only the Administrator (MDM) to install/remove DoD root and intermediate PKI certificates.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-230133	MOTO-09-009100	SV-230133r569707_rule		Medium

Description
DoD root and intermediate PKI certificates are used to verify the authenticity of PKI certificates of users and web services. If the user is allowed to remove root and intermediate certificates, the user could allow an adversary to falsely sign a certificate in such a way that it could not be detected. Restricting the ability to remove DoD root and intermediate PKI certificates to the Administrator mitigates this risk. SFR ID: FMT_MOF_EXT.1.2 #47

Description

DoD root and intermediate PKI certificates are used to verify the authenticity of PKI certificates of users and web services. If the user is allowed to remove root and intermediate certificates, the user could allow an adversary to falsely sign a certificate in such a way that it could not be detected. Restricting the ability to remove DoD root and intermediate PKI certificates to the Administrator mitigates this risk. SFR ID: FMT_MOF_EXT.1.2 #47

STIG	Date
Motorola Android 9.x COBO Security Technical Implementation Guide	2020-10-16

Details

Check Text ( C-32448r538395_chk )
Review the device configuration to confirm that the user is unable to remove DoD root and intermediate PKI certificates. On the MDM console: 1. Open the User restrictions setting. 2. Verify that "Disallow config credentials" is set to "On" for the work profile. On the Android Pie device: 1. Open Settings. 2. Tap "Security & Location". 3. Tap on "Advanced". 4. Tap on "Encryption & credentials". 5. Tap on "Trusted credentials". 6. Verify that the user is unable to untrust or remove any work certificates. If on the Motorola Android Pie device the user is able to remove certificates, this is a finding.

Check Text ( C-32448r538395_chk )

Review the device configuration to confirm that the user is unable to remove DoD root and intermediate PKI certificates.

On the MDM console:
1. Open the User restrictions setting.
2. Verify that "Disallow config credentials" is set to "On" for the work profile.

On the Android Pie device:
1. Open Settings.
2. Tap "Security & Location".
3. Tap on "Advanced".
4. Tap on "Encryption & credentials".
5. Tap on "Trusted credentials".
6. Verify that the user is unable to untrust or remove any work certificates.

If on the Motorola Android Pie device the user is able to remove certificates, this is a finding.

Fix Text (F-32426r538396_fix)
Configure Motorola Android Pie to prevent a user from removing DoD root and intermediate PKI certificates. On the MDM console: 1. Open the User restrictions setting. 2. Set "Disallow config credentials" to "On" for the work profile.