Samsung Android 12 with Knox 3.x COBO Security Technical Implementation Guide

Description

This Security Technical Implementation Guide is published as a tool to improve the security of Department of Defense (DoD) information systems. The requirements are derived from the National Institute of Standards and Technology (NIST) 800-53 and related documents. Comments or proposed revisions to this document should be sent via email to the following address: [email protected]

Details

Version / Release: V1R2

Published: 2022-06-07

Updated At: 2022-08-25 11:40:20

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    Vuln Rule Version CCI Severity Title Description Status Finding Details Comments
    SV-251803r814165_rule KNOX-12-110010 CCI-000366 MEDIUM Samsung Android must be enrolled as a COBO device. The Device is the designated application group for the COBO use case. SFR ID: FMT_MOF_EXT.1.2 #47
    SV-251804r814168_rule KNOX-12-110020 CCI-000048 LOW Samsung Android must be configured to display the DoD advisory warning message at startup or each time the user unlocks the device. 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 consistent with applicable Federal laws, Executive Orders, direc
    SV-251805r814171_rule KNOX-12-110030 CCI-000366 MEDIUM Samsung Android must be configured to 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. Passwords that contain repeating or sequential characters are significantly easier to guess than those that do not contain repeating or sequen
    SV-251806r814174_rule KNOX-12-110040 CCI-000057 MEDIUM Samsung Android 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 through loss, theft, etc. Such devices are much more like
    SV-251807r814177_rule KNOX-12-110050 CCI-000205 MEDIUM Samsung Android must be configured to enforce a minimum password length of six 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 permitted, how quickly an adversary can do each attempt, an
    SV-251808r814180_rule KNOX-12-110060 CCI-000044 MEDIUM Samsung Android must be configured to not allow more than 10 consecutive failed authentication attempts. The more attempts an adversary has 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 attempts mitigates this risk. Setting the limit at 10 or les
    SV-251809r814183_rule KNOX-12-110070 CCI-000057 MEDIUM Samsung Android 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 physical access to the mobile device through loss, theft, et
    SV-251810r814186_rule KNOX-12-110080 CCI-000767 MEDIUM Samsung Android must be configured to disable authentication mechanisms providing user access to protected data other than a Password Authentication Factor, including face recognition. The biometric factor can be used to authenticate the user in order to unlock the mobile device. Unapproved/evaluated biometric mechanisms could allow unauthorized users to have access to DoD sensitive data if compromised. By not permitting the use of unap
    SV-251811r835023_rule KNOX-12-110090 CCI-000767 MEDIUM Samsung Android must be configured to enable a screen-lock policy that will lock the display after a period of inactivity - Disable trust agents. 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 physical access to the mobile device through loss, theft, et
    SV-251812r814192_rule KNOX-12-110100 CCI-001090 MEDIUM Samsung Android must be configured to not allow backup of all applications and configuration data 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 MOS. Where the remote backup involves a cloud-based solution, the backup capability is often used to
    SV-251813r814195_rule KNOX-12-110110 CCI-000381 MEDIUM Samsung Android must be configured to disable developer modes. Developer modes expose features of the MOS that are not available during standard operation. An adversary may leverage a vulnerability inherent in a developer mode to compromise the confidentiality, integrity, and availability of DoD sensitive information
    SV-251814r816517_rule KNOX-12-110120 CCI-001761 LOW Samsung Android must be configured to disable all Bluetooth profiles except for HSP (Headset Profile), HFP (Hands-Free Profile), SPP (Serial Port Profile), A2DP (Advanced Audio Distribution Profile), AVRCP (Audio/Video Remote Control Profile), and PBAP (Phone Book Access Profile). Some Bluetooth profiles provide the capability for remote transfer of sensitive DoD data without encryption or otherwise do not meet DoD IT security policies and therefore must be disabled. SFR ID: FMT_SMF_EXT.1.1/BLUETOOTH BT-8
    SV-251815r814201_rule KNOX-12-110130 CCI-001199 HIGH Samsung Android must be configured to enable encryption for data at rest on removable storage media or, alternately, the use of removable storage media must be disabled. The MOS must ensure the data being written to the mobile device's removable media is protected from unauthorized access. If data at rest is unencrypted, it is vulnerable to disclosure. Even if the operating system enforces permissions on data access, an a
    SV-251816r814204_rule KNOX-12-110140 CCI-002546 MEDIUM Samsung Android must be configured to disable USB mass storage mode. USB mass storage mode enables the transfer of data and software from one device to another. This software can include malware. When USB mass storage is enabled on a mobile device, it becomes a potential vector for malware and unauthorized data exfiltratio
    SV-251817r814207_rule KNOX-12-110150 CCI-001090 MEDIUM Samsung Android must be configured to not allow backup of all applications, configuration data to locally connected systems. Data on mobile devices is protected by numerous mechanisms, including user authentication, access control, and cryptography. When the data is backed up to an external system (either locally connected or cloud based), many if not all of these mechanisms ar
    SV-251818r814210_rule KNOX-12-110160 CCI-001443 MEDIUM Samsung Android must be configured to enable authentication of personal hotspot connections to the device using a preshared key. If no authentication is required to establish personal hotspot connections, an adversary may be able to use that device to perform attacks on other devices or networks without detection. A sophisticated adversary may also be able to exploit unknown system
    SV-251819r814213_rule KNOX-12-110170 CCI-000366 MEDIUM Samsung Android must be configured to disallow configuration of the device's date and time. Determining the correct time a particular application event occurred on a system is critical when conducting forensic analysis and investigating system events. Periodically synchronizing internal clocks with an authoritative time source is needed to cor
    SV-251820r814216_rule KNOX-12-110180 CCI-000366 MEDIUM Samsung Android must have the DoD root and intermediate PKI certificates installed. 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 adversary could falsely sign a certificate in such a way that it
    SV-251821r814219_rule KNOX-12-110190 CCI-001764 MEDIUM Samsung Android must be configured to enforce an application installation policy by specifying an application allowlist that restricts applications by the following characteristics: names. 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 provide an alternate method of restricting user access/execution
    SV-251822r816522_rule KNOX-12-110200 CCI-000366 MEDIUM Samsung Android must be configured to not allow installation of applications with the following characteristics: - back up MD data to non-DoD cloud servers (including user and application access to cloud backup services);- transmit MD diagnostic data to non-DoD servers; - voice assistant application if available when MD is locked; - voice dialing application if available when MD is locked; - allows synchronization of data or applications between devices associated with user; and - allows unencrypted (or en 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 configure an application allowlist properly could allow unaut
    SV-251823r814225_rule KNOX-12-110210 CCI-000060 MEDIUM Samsung Android must be configured to not display the following (Work Environment) notifications when the device is locked: 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 new notifications. However, in many cases, these notifica
    SV-251824r814228_rule KNOX-12-110220 CCI-000366 MEDIUM Samsung Android must be configured to enable audit logging. Audit logs enable monitoring of security-relevant events and subsequent forensics when breaches occur. They help identify attacks so that breaches can either be prevented or limited in their scope. They facilitate analysis to improve performance and secur
    SV-251825r814231_rule KNOX-12-110230 CCI-000366 MEDIUM Samsung Android must be configured to prevent users from adding personal email accounts to the work email app. If the user is able to 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 to the Administrator or to allowlisted accounts miti
    SV-251826r814234_rule KNOX-12-110240 CCI-001090 MEDIUM Samsung Android must be configured to not allow backup of all applications, configuration data to remote systems. - Disable Data Sync Framework Backups to remote systems (including cloud backup) can leave data vulnerable to breach on the external systems, which often offer less protection than the MOS. Where the remote backup involves a cloud-based solution, the backup capability is often used to
    SV-251827r814237_rule KNOX-12-110250 CCI-000366 MEDIUM Samsung Android must allow only the Administrator (management tool) to perform the following management function: install/remove DoD root and intermediate PKI certificates. 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 certific
    SV-251828r814240_rule KNOX-12-110260 CCI-000366 MEDIUM Samsung Android must be configured to enforce an application installation policy by specifying one or more authorized application repositories, including DoD-approved commercial app repository, management tool server, or mobile application store. 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 such installations and executions could cause a compromise
    SV-251829r814243_rule KNOX-12-110270 CCI-000366 LOW Samsung Android must be configured to enable Common Criteria (CC) Mode. The CC Mode feature is a superset of other features and behavioral changes that are mandatory MDFPP requirements. If CC mode is not implemented the device will not be operating in the NIAP-certified compliant CC Mode of operation. When enforcing AE CC mo
    SV-251830r814246_rule KNOX-12-110280 CCI-000185 LOW Samsung Android must not accept the certificate when it cannot establish a connection to determine the validity of a certificate. Certificate-based security controls depend on the ability of the system to verify the validity of a certificate. If the MOS were to accept an invalid certificate, it could take unauthorized actions, resulting in unanticipated outcomes. At the same time, i
    SV-251831r814249_rule KNOX-12-110290 CCI-000366 MEDIUM Samsung Android device users must complete required training. The security posture of Samsung 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, if the Authorizing Official (AO) has approved the use of
    SV-251832r814252_rule KNOX-12-110300 CCI-000366 HIGH The Samsung Android device must have the latest available Samsung Android operating system (OS) installed. Required security features are not available in earlier OS versions. In addition, earlier versions may have known vulnerabilities. SFR ID: FMT_MOF_EXT.1.2 #47