Google Android 13 BYOAD Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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PP-MDF-331090
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Google Android 13 must prohibit DOD VPN profiles in the Personal Profile.
If DOD VPN profiles are configured in the Personal Profile DOD sensitive data world be at risk of compromise and the DOD network could be at risk of being attacked by malware installed on the devic...Rule Low Severity -
Google Android 13 must be configured to enforce a minimum password length of six characters and not allow passwords that include more than four repeating or sequential characters.
Password strength is a measure of the effectiveness of a password in resisting guessing and brute force attacks. The ability to crack a password is a function of how many attempts an adversary is p...Rule Medium Severity -
Google Android 13 must be configured to lock the display after 15 minutes (or less) of inactivity.
The screen lock timeout must be set to a value that helps protect the device from unauthorized access. Having a too-long timeout would increase the window of opportunity for adversaries who gain ph...Rule Medium Severity -
Google Android 13 must be configured to enforce an application installation policy by specifying an application allowlist that restricts applications by the following characteristics: [selection: list of digital signatures, cryptographic hash values, names, application version].
The application allowlist, in addition to controlling the installation of applications on the MD, must control user access/execution of all core and preinstalled applications, or the MD must provid...Rule Medium Severity -
Google Android 13 allowlist must be configured to not include applications with the following characteristics (work profile only): 1. Back up mobile device (MD) data to non-DOD cloud servers (including user and application access to cloud backup services); 2. Transmit MD diagnostic data to non-DOD servers; 3. Voice assistant application if available when MD is locked; 4. Voice dialing application if available when MD is locked; 5. Allows synchronization of data or applications between devices associated with user; and 6. Allows unencrypted (or encrypted but not FIPS 140-2 validated) data sharing with other MDs or printers.
Requiring all authorized applications to be in an application allowlist prevents the execution of any applications (e.g., unauthorized, malicious) that are not part of the allowlist. Failure to con...Rule Medium Severity -
Google Android 13 must be configured to not allow backup of all work profile applications to remote systems.
Backups to remote systems (including cloud backup) can leave data vulnerable to breach on the external systems, which often offer less protection than the mobile operating system (MOS). Where the r...Rule Medium Severity -
Google Android 13 must be configured to disable exceptions to the access control policy that prevent [selection: application processes, groups of application processes] from accessing [selection: all, private] data stored by other [selection: application processes, groups of application processes].
App data sharing gives apps the ability to access the data of other apps for enhanced user functionality. However, sharing also poses a significant risk that unauthorized users or apps will obtain ...Rule Medium Severity -
The Google Android 13 work profile must be configured to enforce the system application disable list (work profile only).
The system application disables list controls user access to/execution of all core and preinstalled applications. Core application: Any application integrated into Google Android 13 by Google. ...Rule Medium Severity -
PP-MDF-333350
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PP-MDF-333024
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PP-MDF-333026
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Google Android 13 must be configured to enable a screen-lock policy that will lock the display after a period of inactivity.
The screen-lock timeout helps protect the device from unauthorized access. Devices without a screen-lock timeout provide an opportunity for adversaries who gain physical access to the mobile device...Rule Medium Severity -
PP-MDF-333030
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PP-MDF-333040
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Google Android 13 must be configured to not allow more than 10 consecutive failed authentication attempts.
The more attempts an adversary makes to guess a password, the more likely the adversary will enter the correct password and gain access to resources on the device. Setting a limit on the number of ...Rule Medium Severity -
PP-MDF-333050
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Google Android 13 must be configured to enforce an application installation policy by specifying one or more authorized application repositories.
Forcing all applications to be installed from authorized application repositories can prevent unauthorized and malicious applications from being installed and executed on mobile devices. Allowing s...Rule Medium Severity -
PP-MDF-333060
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PP-MDF-333070
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PP-MDF-333080
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Google Android 13 must be configured to not display the following (work profile) notifications when the device is locked: [selection: a. email notifications b. calendar appointments c. contact associated with phone call notification d. text message notification e. other application-based notifications f. all notifications].
Many mobile devices display notifications on the lock screen so that users can obtain relevant information in a timely manner without having to frequently unlock the phone to determine if there are...Rule Medium Severity -
PP-MDF-333110
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Google Android 13 must be configured to disable trust agents.
Trust agents allow a user to unlock a mobile device without entering a passcode when the mobile device is, for example, connected to a user-selected Bluetooth device or in a user-selected location....Rule Medium Severity -
PP-MDF-333160
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Google Android 13 must be configured to display the DOD advisory warning message at startup or each time the user unlocks the Work Profile.
Before granting access to the system, the mobile operating system is required to display the DOD-approved system use notification message or banner that provides privacy and security notices consis...Rule Low Severity -
PP-MDF-333250
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The Google Android 13 must allow only the administrator (EMM) to install/remove DOD root and intermediate PKI certificates (work profile).
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, th...Rule Medium Severity -
PP-MDF-333280
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PP-MDF-993300
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Google Android 13 users must complete required training.
The security posture of Google devices requires the device user to configure several required policy rules on their device. User-Based Enforcement (UBE) is required for these controls. In addition,...Rule Medium Severity -
PP-MDF-993300
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Google Android 13 must have the DOD root and intermediate PKI certificates installed (work profile only).
DOD root and intermediate PKI certificates are used to verify the authenticity of PKI certificates of users and web services. If the root and intermediate certificates are not available, an adversa...Rule Medium Severity -
PP-MDF-993300
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The Google Android 13 work profile must be configured to prevent users from adding personal email accounts to the work email app.
If the user can add a personal email account (POP3, IMAP, EAS) to the work email app, it could be used to forward sensitive DOD data to unauthorized recipients. Restricting email account addition t...Rule Medium Severity -
PP-MDF-993300
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PP-MDF-993300
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Google Android 13 must be provisioned as a BYOAD device (Android work profile for employee-owned devices [BYOD]).
The Android work profile for employee-owned devices (BYOD) is the designated application group for the BYOAD use case. SFR ID: FMT_SMF_EXT.1.1 #47Rule Medium Severity -
PP-MDF-993300
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The Google Android 13 work profile must be configured to disable automatic completion of workspace internet browser text input.
The autofill functionality in the web browser allows the user to complete a form that contains sensitive information, such as personally identifiable information (PII), without previous knowledge o...Rule Medium Severity -
PP-MDF-993300
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The Google Android 13 work profile must be configured to disable the autofill services.
The autofill services allow the user to complete text inputs that could contain sensitive information, such as personally identifiable information (PII), without previous knowledge of the informati...Rule Medium Severity -
PP-MDF-993300
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Android 13 devices must have the latest available Google Android 13 operating system installed.
Required security features are not available in earlier operating system versions. In addition, earlier versions may have known vulnerabilities. SFR ID: FMT_SMF_EXT.1.1 #47Rule High Severity -
PP-MDF-993300
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Android 13 devices must be configured to disable the use of third-party keyboards (work profile only).
Many third-party keyboard applications are known to contain malware. SFR ID: FMT_SMF_EXT.1.1 #47Rule Low Severity
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