Samsung Android OS 10 with Knox 3.x Security Technical Implementation Guide

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]

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Version / Release: V1R1

Published: 2020-03-24

Updated At: 2020-05-11 21:08:56

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Overall 0 0 0 0
Low 0 0 0 0
Medium 0 0 0 0
High 0 0 0 0
Drop CKL or SCAP (XCCDF) results here.

    Vuln Rule Version CCI Severity Title Description Status Finding Details Comments
    SV-109017r1_rule KNOX-10-000100 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-109019r1_rule KNOX-10-000200 CCI-000366 MEDIUM Samsung Android must be configured to not allow passwords that include more than two 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-109021r1_rule KNOX-10-000300 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-109023r1_rule KNOX-10-000400 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-109025r1_rule KNOX-10-000500 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-109027r1_rule KNOX-10-000800 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-109029r1_rule KNOX-10-001000 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to enforce an application installation policy by specifying an application whitelist that restricts applications by the following characteristics: names. The application whitelist, 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-109031r1_rule KNOX-10-001100 CCI-000366 MEDIUM The Samsung Android Work Environment whitelist must be configured to not include 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 Requiring all authorized applications to be in an application whitelist prevents the execution of any applications (e.g., unauthorized, malicious) that are not part of the whitelist. Failure to configure an application whitelist properly could allow unaut
    SV-109033r1_rule KNOX-10-001300 CCI-000366 LOW Samsung Android must be configured to disable all Bluetooth profiles except for HSP (Headset Profile), HFP (HandsFree 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 should be disabled. SFR ID: FMT_SMF_EXT.1.1 #18h
    SV-109035r1_rule KNOX-10-001500 CCI-000051 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-109037r1_rule KNOX-10-001900 CCI-001199 HIGH Samsung Android must be configured to enable encryption for data at rest on removable storage media or alternatively, 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-109039r1_rule KNOX-10-002100 CCI-000366 MEDIUM Samsung Android must be configured to disable trust agents. Note: This requirement is not applicable (NA) for specific biometric authentication factors included in the product Common Criteria evaluation. The fingerprint reader can be used to authenticate the user in order to unlock the mobile device. At this time, no mobile device biometric reader has been evaluated as meeting the security requirements of the MDFPP or been approved for DoD use on mobile d
    SV-109041r1_rule KNOX-10-002200 CCI-000366 MEDIUM Samsung Android must be configured to disable Face Recognition. Note: This requirement is not applicable (NA) for specific biometric authentication factors included in the product Common Criteria evaluation. The fingerprint reader can be used to authenticate the user in order to unlock the mobile device. At this time, no mobile device biometric reader has been evaluated as meeting the security requirements of the MDFPP or been approved for DoD use on mobile d
    SV-109043r1_rule KNOX-10-002700 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-109045r1_rule KNOX-10-003300 CCI-000048 LOW Samsung Android must be configured to display the DoD advisory warning message at start-up or each time the user unlocks the device. The mobile operating system is required to display the DoD-approved system use notification message or banner before granting access to the system that provides privacy and security notices consistent with applicable federal laws, Executive Orders, direct
    SV-109047r1_rule KNOX-10-003400 CCI-000381 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-109049r1_rule KNOX-10-003600 CCI-000097 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-109051r1_rule KNOX-10-003800 CCI-002338 MEDIUM Samsung Android Work Environment must be configured to not allow backup of all applications, configuration data to remote systems (device management backup). - Disable Backup Services 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-109053r1_rule KNOX-10-003900 CCI-002338 MEDIUM Samsung Android Work Environment must be configured to not allow backup of all applications, configuration data to remote systems (account management backup). - Disable Data Sync SFR ID: FMT_SMF_EXT.1.1 #40
    SV-109055r1_rule KNOX-10-004200 CCI-002314 MEDIUM Samsung Android must be configured to enable authentication of personal hotspot connections to the device using a pre-shared 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-109057r1_rule KNOX-10-004600 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to disable exceptions to the access control policy that prevents application processes, groups of application processes from accessing all, private data stored by other application processes, groups of application processes. - Disable Move files to personal 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 access to DoD sensitive information. Data sharing restrict
    SV-109059r1_rule KNOX-10-004700 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to disable exceptions to the access control policy that prevents application processes, groups of application processes from accessing all, private data stored by other application processes, groups of application processes. - Disable Copy and Paste data 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 access to DoD sensitive information. Data sharing restrict
    SV-109061r1_rule KNOX-10-004800 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to disable exceptions to the access control policy that prevents application processes, groups of application processes from accessing all, private data stored by other application processes, groups of application processes. - Disable Sync Calendar to personal 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 access to DoD sensitive information. Data sharing restrict
    SV-109063r1_rule KNOX-10-005000 CCI-000366 MEDIUM Samsung Android must be configured to disable multi-user modes (tablets only). Note: This requirement is only applicable to Samsung tablets. Multi-user mode allows multiple users to share a mobile device by providing a degree of separation between user data. To date, no mobile device with multi-user mode features meets DoD requirem
    SV-109065r1_rule KNOX-10-007300 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 are dependent 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
    SV-109067r1_rule KNOX-10-009000 CCI-000366 MEDIUM The Samsung Android Work Environment 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 whitelisted accounts miti
    SV-109069r1_rule KNOX-10-009200 CCI-000366 MEDIUM Samsung Android Personal Environment must be configured to enforce the system application disable list. The system application disable list controls user access/execution of all core and pre-installed applications. Core application: Any application integrated into Samsung Android by Google or Samsung. Pre-installed application: Additional non-core applica
    SV-109071r1_rule KNOX-10-009300 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to enforce the system application disable list. The system application disable list controls user access/execution of all core and pre-installed applications. Core application: Any application integrated into Samsung Android by Google or Samsung. Pre-installed application: Additional non-core applica
    SV-109073r1_rule KNOX-10-009500 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-109075r1_rule KNOX-10-009600 CCI-000366 MEDIUM Samsung Android must be enrolled as a COPE/COBO device. The Knox Workspace is the designated application group for the COPE use case. SFR ID: FMT_SMF_EXT.1.1 #47
    SV-109077r1_rule KNOX-10-009900 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-109079r1_rule KNOX-10-010600 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to disable the Auto Fill services. The auto-fill services allow the user to complete text inputs that could contain sensitive information, such as personally identifiable information (PII), without previous knowledge of the information. By allowing the use of auto-fill services, an adversa
    SV-109081r1_rule KNOX-10-010800 CCI-000366 HIGH Samsung Android must be configured to enable Knox CC Mode. The KPE 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. CC Mode implements
    SV-109083r1_rule KNOX-10-011000 CCI-000366 MEDIUM Samsung Android must be configured to disallow configuration of Date 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-109085r1_rule KNOX-10-011200 CCI-000366 MEDIUM Samsung Android must be configured to enforce a USB host mode exception list. Note: This configuration allows DeX mode (with input devices), which is DoD-approved for use. The USB host mode feature allows USB devices to connect to the device (e.g., USB flash drives, USB mouse, USB keyboard) using a micro USB to USB adapter cable. The USB host mode exception list allows selected USB devices to operate, while disallowing othe
    SV-109087r1_rule KNOX-10-011400 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to enforce that Share Via List is disabled. The "Share Via List" feature allows the transfer of data between nearby Samsung devices via Android Beam, Wi-Fi Direct, Link Sharing, and Share to Device. If sharing were enabled, sensitive DoD data could be compromised. SFR ID: FMT_SMF_EXT.1.1 #47
    SV-109089r1_rule KNOX-10-011600 CCI-000366 MEDIUM Samsung Android must be configured to disallow outgoing beam. Outgoing beam allows transfer of data through NFC and Bluetooth by touching two unlocked devices together. If it were enabled, sensitive DoD data could be transmitted. SFR ID: FMT_SMF_EXT.1.1 #47
    SV-109091r1_rule KNOX-10-011800 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to enforce that Wi-Fi Sharing is disabled. Wi-Fi Sharing is an optional configuration of Wi-Fi Tethering/Mobile Hotspot, which allows the device to share its Wi-Fi connection with other wirelessly connected devices instead of its mobile (cellular) connection. Wi-Fi Sharing grants the "other" devi
    SV-109093r1_rule KNOX-10-012000 CCI-000366 MEDIUM Samsung Android Work Environment must be configured to enable Certificate Revocation checking. A Certificate Revocation List (CRL) allows a certificate issuer to revoke a certificate for any reason, including improperly issued certificates and compromise of the private keys. Checking the revocation status of the certificate mitigates the risk assoc
    SV-109095r1_rule KNOX-10-012300 CCI-000366 MEDIUM Samsung Android Work Environment 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-109097r1_rule KNOX-10-012400 CCI-000366 MEDIUM Samsung Android Work Environment 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-109099r1_rule KNOX-10-012500 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_SMF_EXT.1.1 #47
    SV-109101r1_rule KNOX-10-012700 CCI-000366 MEDIUM Samsung Android must be configured to require the user to present the Password Authentication Factor prior to decryption of protected data, encrypted DEKs, KEKs, and [selection: long-term trusted channel key material, all software-based key storage, no other keys] at startup. The intent of this requirement is to prevent decryption of protected data before the user has authorized to the device using the Password Authentication Factor. The Password Authentication Factor is also required in order to derive the key used to decrypt