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Samsung Android OS 14 with Knox 3.x COBO Security Technical Implementation Guide

  • Version/Release: V1R1
  • Published: 2023-10-18
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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: disa.stig_spt@mail.mil.
b
Samsung Android must be enrolled as a COBO device.
CM-6 - Medium - CCI-000366 - V-258626 - SV-258626r931078_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110010
Vuln IDs
  • V-258626
Rule IDs
  • SV-258626r931078_rule
The device is the designated application group for the COBO use case. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62366r931076_chk

Review the configuration to determine if the Samsung Android devices are enrolled in a DOD-approved use case. This validation procedure is performed on both the management tool Administration Console and the Samsung Android device. On the management tool, verify the default enrollment is set as "Fully managed". On the Samsung Android device: 1. Open Settings >> Security and privacy >> More security settings >> Device admin apps. 2. Verify the management tool Agent is listed. If on the management tool the default enrollment is not set as "Fully managed" or the management tool Agent is not listed, this is a finding.

Fix: F-62275r931077_fix

Enroll the Samsung Android devices in a DOD-approved use case. On the management tool, configure the default enrollment as "Fully managed". Refer to the management tool documentation to determine how to configure the device enrollment.

a
Samsung Android must be configured to display the DOD advisory warning message at startup or each time the user unlocks the device.
AC-8 - Low - CCI-000048 - V-258627 - SV-258627r931081_rule
RMF Control
AC-8
Severity
Low
CCI
CCI-000048
Version
KNOX-14-110020
Vuln IDs
  • V-258627
Rule IDs
  • SV-258627r931081_rule
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, directives, policies, regulations, standards, and guidance. Required banners help ensure DOD can audit and monitor the activities of mobile device users without legal restriction. System use notification messages can be displayed when individuals first access or unlock the mobile device. The banner must be implemented as a "click-through" banner at device unlock (to the extent permitted by the operating system). A "click-through" banner prevents further activity on the information system unless and until the user executes a positive action to manifest agreement by clicking on a box indicating "OK." The approved DOD text must be used exactly as required in the Knowledge Service referenced in DODI 8500.01. For devices accommodating banners of 1300 characters, the banner text is: You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. -At any time, the USG may inspect and seize data stored on this IS. -Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. -This IS includes security measures (e.g., authentication and access controls) to protect USG interests--not for your personal benefit or privacy. -Notwithstanding the above, using this IS does not constitute consent to PM, LE, or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. Refer to User Agreement for details. For devices with severe character limitations, the banner text is: I've read & consent to terms in IS user agreem't. The Administrator must configure the banner text exactly as written without any changes. SFR ID: FMT_SMF_EXT.1.1 #36
Checks: C-62367r931079_chk

Confirm if Method #1 or #2 is used at the Samsung device site and follow the appropriate procedure. This validation procedure is performed on both the management tool and the Samsung Android device. Validation procedure for Method #1: Place the DOD warning banner in the user agreement signed by each Samsung Android device user (preferred method). Review the signed user agreements for several Samsung Android device users and verify the agreement includes the required DOD warning banner text. Validation procedure for Method #2: Configure the warning banner text in the Lock screen message on each managed mobile device. On the management tool, in the device restrictions section, verify "Lock Screen Message" is set to the DOD-mandated warning banner text. On the Samsung Android device, verify the required DOD warning banner text is displayed on the Lock screen. If the warning text has not been placed in the signed user agreement, or if on the management tool "Lock Screen Message" is not set to the DOD-mandated warning banner text, or on the Samsung Android device the required DOD warning banner text is not displayed on the Lock screen, this is a finding.

Fix: F-62276r931080_fix

Configure the DOD warning banner by either of the following methods (required text is found in the Vulnerability Description): Method #1: Place the DOD warning banner in the user agreement signed by each Samsung Android device user (preferred method). Method #2: Configure the warning banner text in the lock screen message on each managed mobile device. On the management tool, in the device restrictions section, set "Lock Screen Message" to the DOD-mandated warning banner text.

b
Samsung Android must be configured to not allow passwords that include more than four repeating or sequential characters.
IA-5 - Medium - CCI-000195 - V-258628 - SV-258628r931084_rule
RMF Control
IA-5
Severity
Medium
CCI
CCI-000195
Version
KNOX-14-110030
Vuln IDs
  • V-258628
Rule IDs
  • SV-258628r931084_rule
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. Therefore, disallowing repeating or sequential characters increases password strength and decreases risk. SFR ID: FMT_SMF_EXT.1.1 #1b
Checks: C-62368r931082_chk

Review the configuration to determine if the Samsung Android devices are disallowing passwords containing more than four repeating or sequential characters. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device password policies, verify "minimum password quality" is set to "Numeric(Complex)" or better. On the Samsung Android device: 1. Open Settings >> Lock screen >> Screen lock type. 2. Authenticate using current method. 3. Tap "PIN". 4. Verify PINs with more than four repeating or sequential numbers are not accepted. If on the management tool "minimum password quality" is not set to "Numeric(Complex)" or better, or on the Samsung Android device a password with more than four repeating or sequential numbers is accepted, this is a finding.

Fix: F-62277r931083_fix

Configure the Samsung Android devices to disallow passwords containing more than four repeating or sequential characters. On the management tool, in the device password policies, set "minimum password quality" to "Numeric(Complex)" or better. If the management tool does not support "Numeric(Complex)" but does support "Numeric", Knox Platform for Enterprise (KPE) can be used to achieve STIG compliance. In this case, configure this policy with value "Numeric" and use an additional KPE policy (innately by the management tool or via Knox Service Plugin [KSP] "Maximum Numeric Sequence Length" with a value of "4".

b
Samsung Android must be configured to enable a screen-lock policy that will lock the display after a period of inactivity.
AC-11 - Medium - CCI-000057 - V-258629 - SV-258629r931087_rule
RMF Control
AC-11
Severity
Medium
CCI
CCI-000057
Version
KNOX-14-110040
Vuln IDs
  • V-258629
Rule IDs
  • SV-258629r931087_rule
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 likely to be in an unlocked state when acquired by an adversary, thus granting immediate access to the data on the mobile device and possibly access to DOD networks. SFR ID: FMT_SMF_EXT.1.1 #2a
Checks: C-62369r931085_chk

Verify requirement KNOX-14-110030 (minimum password quality) has been implemented. If a minimum password quality has not been implemented, this is a finding.

Fix: F-62278r931086_fix

Implement a minimum password quality (refer to requirement KNOX-14-110030).

b
Samsung Android must be configured to enforce a minimum password length of six characters.
IA-5 - Medium - CCI-000205 - V-258630 - SV-258630r931090_rule
RMF Control
IA-5
Severity
Medium
CCI
CCI-000205
Version
KNOX-14-110050
Vuln IDs
  • V-258630
Rule IDs
  • SV-258630r931090_rule
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 complete each attempt, and the size of the password space. The longer the minimum length of the password is, the larger the password space. Having a too-short minimum password length significantly reduces password strength, increasing the chance of password compromise and resulting device and data compromise. SFR ID: FMT_SMF_EXT.1.1 #1a
Checks: C-62370r931088_chk

Review the configuration to determine if the Samsung Android devices are enforcing a minimum password length of six characters. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device password policies, verify "minimum password length" is set to "6". On the Samsung Android device: 1. Open Settings >> Lock screen >> Screen lock type. 2. Enter current password. 3. Tap "PIN". 4. Verify the text "PIN must contain at least", followed by a value of at least "6 digits", appears above the PIN entry. If on the management tool "minimum password length" is not set to "6", or on the Samsung Android device the text "PIN must contain at least" is followed by a value of less than "6 digits", this is a finding.

Fix: F-62279r931089_fix

Configure the Samsung Android devices to enforce a minimum password length of six characters. On the management tool, in the device password policies, set "minimum password length" to "6".

b
Samsung Android must be configured to not allow more than 10 consecutive failed authentication attempts.
AC-7 - Medium - CCI-000044 - V-258631 - SV-258631r931093_rule
RMF Control
AC-7
Severity
Medium
CCI
CCI-000044
Version
KNOX-14-110060
Vuln IDs
  • V-258631
Rule IDs
  • SV-258631r931093_rule
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 fewer attempts gives authorized users the ability to make a few mistakes when entering the password but still provides adequate protection against dictionary or brute force attacks on the password. SFR ID: FMT_SMF_EXT.1.1 #2c, FIA_AFL_EXT.1.5
Checks: C-62371r931091_chk

Review the configuration to determine if the Samsung Android devices are allowing only 10 or fewer consecutive failed authentication attempts. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device password policies, verify "max password failures for local wipe" is set to "10" or fewer attempts. On the Samsung Android device: 1. Open Settings >> Lock screen. 2. Verify "Secure lock settings" is present and tap it. 3. Enter current password. 4. Verify "Auto factory reset" is grayed out and cannot be configured. Note: When "Auto factory reset" is grayed out, this indicates the Administrator (MDM) is in control of the setting to wipe the device after 10 or fewer consecutive failed authentication attempts. If on the management tool "max password failures for local wipe" is not set to "10" or fewer attempts, or on the Samsung Android device the "Auto factory reset" menu can be configured, this is a finding.

Fix: F-62280r931092_fix

Configure the Samsung Android devices to allow only 10 or fewer consecutive failed authentication attempts. On the management tool, in the device password policies, set "max password failures for local wipe" to "10" or fewer attempts. A device password must be set for "max password failures for local wipe" to become active.

b
Samsung Android must be configured to lock the display after 15 minutes (or less) of inactivity.
AC-11 - Medium - CCI-000057 - V-258632 - SV-258632r931096_rule
RMF Control
AC-11
Severity
Medium
CCI
CCI-000057
Version
KNOX-14-110070
Vuln IDs
  • V-258632
Rule IDs
  • SV-258632r931096_rule
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, etc. Such devices are much more likely to be in an unlocked state when acquired by an adversary, thus granting immediate access to the data on the mobile device. The maximum timeout period of 15 minutes has been selected to balance functionality and security; shorter timeout periods may be appropriate depending on the risks posed to the mobile device. SFR ID: FMT_SMF_EXT.1.1 #2b
Checks: C-62372r931094_chk

Review the configuration to determine if the Samsung Android devices are locking the device display after 15 minutes (or less) of inactivity. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device password policies, verify "max time to screen lock" is set to "15 minutes" or less. On the Samsung Android device: 1. Open Settings >> Lock screen. 2. Verify "Secure lock settings" is present and tap it. 3. Enter current password. 4. Tap "Auto lock when screen turns off". 5. Verify the listed timeout values are 15 minutes or less. If on the management tool "max time to screen lock" is not set to "15 minutes" or less, or on the Samsung Android device "Secure lock settings" is not present and the listed Screen timeout values include durations of more than 15 minutes, this is a finding.

Fix: F-62281r931095_fix

Configure the Samsung Android devices to lock the device display after 15 minutes (or less) of inactivity. On the management tool, in the device password policies, set "max time to screen lock" to "15 minutes" or less. A device password must be set for "max time to screen lock" to become active.

b
Samsung Android must be configured to disable authentication mechanisms providing user access to protected data other than a Password Authentication Factor: Face recognition.
IA-2 - Medium - CCI-000767 - V-258633 - SV-258633r931099_rule
RMF Control
IA-2
Severity
Medium
CCI
CCI-000767
Version
KNOX-14-110080
Vuln IDs
  • V-258633
Rule IDs
  • SV-258633r931099_rule
The biometric factor can be used to authenticate the user 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 unapproved/evaluated biometric authentication mechanisms, this risk is mitigated. SFR ID: FMT_SMF_EXT.1.1 #22, FIA_UAU.5.1
Checks: C-62373r931097_chk

Review the configuration to determine if the Samsung Android devices are disabling face recognition. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool in the device restrictions, verify "Face recognition" is set to "Disable". On the Samsung Android device: 1. Open Settings >> Lock screen >> Screen lock type. 2. Enter current password. 3. Verify "Face" is disabled and cannot be enabled. If on the management tool "Face recognition" is not set to "Disable", or on the Samsung Android device "Face" can be enabled, this is a finding.

Fix: F-62282r931098_fix

Configure the Samsung Android devices to disable face recognition. On the management tool, in the device restrictions, set "Face recognition" to "Disable".

b
Samsung Android must be configured to enable a screen-lock policy that will lock the display after a period of inactivity - Disable trust agents.
IA-2 - Medium - CCI-000767 - V-258634 - SV-258634r931102_rule
RMF Control
IA-2
Severity
Medium
CCI
CCI-000767
Version
KNOX-14-110090
Vuln IDs
  • V-258634
Rule IDs
  • SV-258634r931102_rule
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, etc. Such devices are much more likely to be in an unlocked state when acquired by an adversary, thus granting immediate access to the data on the mobile device. The maximum timeout period of 15 minutes has been selected to balance functionality and security; shorter timeout periods may be appropriate depending on the risks posed to the mobile device. SFR ID: FMT_SMF_EXT.1.1 #2a
Checks: C-62374r931100_chk

Review the configuration to determine if the Samsung Android devices are disabling Trust Agents. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "Trust Agents" are set to "Disable". On the Samsung Android device: 1. Open Settings >> Security and privacy >> More security settings >> Trust agents. 2. Verify all listed Trust Agents are disabled and cannot be enabled. If a Trust Agent is not disabled in the list, verify for that Trust Agent, all of its listed Trustlets are disabled and cannot be enabled. If on the management tool "Trust Agents" are not set to "Disable", or on the Samsung Android device a "Trust Agent" or "Trustlet" can be enabled, this is a finding. Note: If the management tool has been correctly configured but a Trust Agent is still enabled, configure the "List of approved apps listed in managed Google Play" to disable it; refer to KNOX-14-110190. Exception: Trust Agents may be used if the Authorizing Official (AO) allows a screen lock timeout after four hours (or more) of inactivity. This may be applicable to tactical use case.

Fix: F-62283r931101_fix

Configure the Samsung Android devices to disable Trust Agents. On the management tool, in the device restrictions, set "Trust Agents" to "Disable".

b
Samsung Android must be configured to not allow backup of all applications and configuration data to remote systems. - Disable Backup Services.
SC-4 - Medium - CCI-001090 - V-258635 - SV-258635r931105_rule
RMF Control
SC-4
Severity
Medium
CCI
CCI-001090
Version
KNOX-14-110100
Vuln IDs
  • V-258635
Rule IDs
  • SV-258635r931105_rule
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 synchronize data across multiple devices. In this case, DOD devices may synchronize DOD sensitive information to a user's personal device or other unauthorized computers vulnerable to breach. Disallowing remote backup mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #40
Checks: C-62375r931103_chk

Review the configuration to determine if the Samsung Android devices are disabling backup to remote systems (including commercial clouds). This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions section, verify "Backup service" is set to "Disable". On the Samsung Android device: 1. Open Settings >> Accounts and backup. 2. Verify any backup service listed cannot be configured to back up data. If on the management tool "Backup service" is not set to "Disable", or on the Samsung Android device a listed backup service can be configured to back up data, this is a finding.

Fix: F-62284r931104_fix

Configure the Samsung Android devices to disable backup to remote systems (including commercial clouds). On the management tool, in the device restrictions, set "Backup service" to "Disable".

b
Samsung Android must be configured to disable developer modes.
CM-7 - Medium - CCI-000381 - V-258636 - SV-258636r931108_rule
RMF Control
CM-7
Severity
Medium
CCI
CCI-000381
Version
KNOX-14-110110
Vuln IDs
  • V-258636
Rule IDs
  • SV-258636r931108_rule
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. Disabling developer modes mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #26
Checks: C-62376r931106_chk

Review the configure to determine if the Samsung Android devices are disabling developer modes. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "Debugging Features" is set to "Disallow". On the Samsung Android device: 1. Open Settings >> About phone >> Software information. 2. Tap on the Build Number to try to enable Developer Options and validate that action is blocked. If on the management tool "Debugging Features" is not set to "Disallow" or on the Samsung Android device "Developer options" action is not blocked, this is a finding.

Fix: F-62285r931107_fix

Configure the Samsung Android devices to disable developer modes. On the management tool, in the device restrictions, set "Debugging Features" to "Disallow".

a
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).
CM-7 - Low - CCI-000381 - V-258637 - SV-258637r931111_rule
RMF Control
CM-7
Severity
Low
CCI
CCI-000381
Version
KNOX-14-110120
Vuln IDs
  • V-258637
Rule IDs
  • SV-258637r931111_rule
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
Checks: C-62377r931109_chk

Review the Samsung documentation and inspect the configuration to verify the Samsung Android devices are paired only with devices that support HSP, HFP, SPP, A2DP, AVRCP, and PBAP Bluetooth profiles. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions section, verify "Bluetooth" is set to the AO-approved selection: "Allow" if the AO has approved the use of Bluetooth or "Disallow" if the AO has not approved its use. On the Samsung Android device: 1. Open Settings >> Connections >> Bluetooth. 2. Verify all listed paired Bluetooth devices use only authorized Bluetooth profiles. If on the management tool "Bluetooth" is not set to the AO-approved value, or the Samsung Android device is paired with a device that uses unauthorized Bluetooth profiles, this is a finding.

Fix: F-62286r931110_fix

Configure the Samsung Android devices to disable Bluetooth, or if the AO has approved the use of Bluetooth (for example, for hands-free use), train users to only pair devices that support HSP, HFP, SPP, A2DP, AVRCP, and PBAP profiles. On the management tool, in the device restrictions section, set "Bluetooth" to the AO-approved selection: "Allow" if the AO has approved the use of Bluetooth or "Disallow" if the AO has not approved its use. The user training requirement is satisfied in requirement KNOX-14-110300.

c
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.
SC-28 - High - CCI-001199 - V-258638 - SV-258638r931114_rule
RMF Control
SC-28
Severity
High
CCI
CCI-001199
Version
KNOX-14-110130
Vuln IDs
  • V-258638
Rule IDs
  • SV-258638r931114_rule
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 adversary can read removable media directly, thereby circumventing operating system controls. Encrypting the data ensures confidentiality is protected even when the operating system is not running. SFR ID: FMT_SMF_EXT.1.1 #20, #47d
Checks: C-62378r931112_chk

Review the configuration to determine if the Samsung Android devices are either enabling data-at-rest protection for removable media or disabling their use. This requirement is not applicable for devices that do not support removable storage media. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "Mount physical media" is set to "Disallow". On the Samsung Android device, verify that a microSD card cannot be mounted. The device should ignore the inserted SD card and no notifications for the transfer of media files should appear, nor should any files be listed using a file browser, such as Samsung My Files. If on the management tool "Mount physical media" is not set to "Disallow", or on the Samsung Android device a microSD card can be mounted, this is a finding.

Fix: F-62287r931113_fix

Configure the Samsung Android devices to enable data-at-rest protection for removable media, or alternatively, disable their use. This requirement is not applicable for devices that do not support removable storage media. On the management tool, in the device restrictions, set "Mount physical media" to "Disallow". This disables the use of all removable storage, e.g., microSD cards, USB thumb drives, etc. If the deployment requires the use of microSD cards, Knox Platform for Enterprise (KPE) can be used to allow them in a STIG-approved configuration. In this case, do not configure this policy, and instead replace with KPE policy (innately by the management tool or via Knox Service Plugin [KSP]) "Enforce external storage encryption" with value "enable".

b
Samsung Android must be configured to disable USB mass storage mode.
SC-41 - Medium - CCI-002546 - V-258639 - SV-258639r931117_rule
RMF Control
SC-41
Severity
Medium
CCI
CCI-002546
Version
KNOX-14-110140
Vuln IDs
  • V-258639
Rule IDs
  • SV-258639r931117_rule
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 exfiltration. Prohibiting USB mass storage mode mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #39
Checks: C-62379r931115_chk

Review the configuration to determine if the Samsung Android devices are disabling USB mass storage mode. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "USB file transfer" has been set to "Disallow". On the Samsung Android device, from the "USB for file transfer" notification, verify a "File Transfer" is not an option. If on the management tool "USB file transfer" is not set to "Disallow", or on the Samsung Android device a "File Transfer" is an option, this is a finding.

Fix: F-62288r931116_fix

Configure the Samsung Android devices to disable USB mass storage mode. On the management tool, in the device restrictions, set "USB file transfer" to "Disallow". DeX drag and drop file transfer capabilities will be prohibited, but all other DeX capabilities remain usable.

b
Samsung Android must be configured to not allow backup of all applications and configuration data to locally connected systems.
SC-4 - Medium - CCI-001090 - V-258640 - SV-258640r931120_rule
RMF Control
SC-4
Severity
Medium
CCI
CCI-001090
Version
KNOX-14-110150
Vuln IDs
  • V-258640
Rule IDs
  • SV-258640r931120_rule
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 are no longer present. This leaves the backed-up data vulnerable to attack. Disabling backup to external systems mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #40
Checks: C-62380r931118_chk

Verify requirement KNOX-14-110140 (disallow USB file transfer) has been implemented. If disallow USB file transfer has not been implemented, this is a finding.

Fix: F-62289r931119_fix

Ensure USB file transfer has been disallowed (refer to requirement KNOX-14-110140).

b
Samsung Android must be configured to enable authentication of personal hotspot connections to the device using a preshared key. - Disallow config tethering.
AC-18 - Medium - CCI-001443 - V-258641 - SV-258641r931123_rule
RMF Control
AC-18
Severity
Medium
CCI
CCI-001443
Version
KNOX-14-110160
Vuln IDs
  • V-258641
Rule IDs
  • SV-258641r931123_rule
If no authentication is required to establish personal hotspot connections (Wi-Fi and Bluetooth), 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 vulnerabilities to access information and computing resources on the device. Requiring authentication to establish personal hotspot connections mitigates this risk. Application note: If hotspot functionality is permitted, it must be authenticated via a preshared key. There is no requirement to enable hotspot functionality, and it is recommended this functionality be disabled by default. SFR ID: FMT_SMF_EXT.1.1 #41
Checks: C-62381r931121_chk

Review the configuration to determine if the Samsung Android devices are enabling authentication of personal hotspot connections to the device using a preshared key. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "Configure tethering" is set to "Disallow". On the Samsung Android device: 1. Open Settings >> Connections. 2. Verify "Mobile Hotspot and Tethering" is grayed out. If on the management tool "Configure tethering" is not set to "Disallow", or on the Samsung Android device "Mobile Hotspot and Tethering" is not grayed out, this is a finding.

Fix: F-62290r931122_fix

Configure the Samsung Android devices to enable authentication of personal hotspot connections to the device using a preshared key. On the management tool, in the device restrictions, set "Configure tethering" to "Disallow". If the deployment requires the use of Mobile Hotspot and Tethering, Knox Platform for Enterprise (KPE) policy can be used to allow its use in a STIG-approved configuration. In this case, do not configure this policy and instead replace with KPE policy (innately by the management tool or via Knox Service Plugin [KSP]) "Allow open Wi-Fi connection" with value "Disable" and add Training Topic "Don't use Wi-Fi Sharing". (Refer to Supplemental document for additional information.)

b
Samsung Android must be configured to disallow configuration of the device's date and time.
CM-6 - Medium - CCI-000366 - V-258642 - SV-258642r931126_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110170
Vuln IDs
  • V-258642
Rule IDs
  • SV-258642r931126_rule
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 necessary to correctly correlate the timing of events that occur across the enterprise. The three authoritative time sources for Samsung Android are an authoritative time server that is synchronized with redundant United States Naval Observatory (USNO) time servers as designated for the appropriate DOD network (NIPRNet or SIPRNet), the Global Positioning System (GPS), or the wireless carrier. Time stamps generated by the audit system in Samsung Android must include both date and time. The time may be expressed in Coordinated Universal Time (UTC), a modern continuation of Greenwich Mean Time (GMT), or local time with an offset from UTC. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62382r931124_chk

Review the configuration to determine if the Samsung Android devices disallow users from changing the date and time. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "Configure Date/Time" is set to "Disallow". On the Samsung Android device: 1. Open Settings >> General management >> Date and time. 2. Verify "Automatic data and time" is on and the user cannot disable it. If on the management tool "Configure Date/Time" is not set to "Disallow", or on the Samsung Android device "Automatic date and time" is not set or the user can disable it, this is a finding.

Fix: F-62291r931125_fix

Configure the Samsung Android devices to disallow users from changing the date and time. On the management tool, in the device restrictions, set "Configure Date/Time" to "Disallow".

b
Samsung Android must have the DOD root and intermediate PKI certificates installed.
CM-6 - Medium - CCI-000366 - V-258643 - SV-258643r931129_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110180
Vuln IDs
  • V-258643
Rule IDs
  • SV-258643r931129_rule
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 could not be detected. Providing access to the DOD root and intermediate PKI certificates greatly diminishes the risk of this attack. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62383r931127_chk

Review the configuration to determine if the Samsung Android devices have the DOD root and intermediate PKI certificates installed. This validation procedure is performed on both the management tool and the Samsung Android device. The current DOD root and intermediate PKI certificates may be obtained in self-extracting zip files at https://cyber.mil/pki-pke (for NIPRNet). On the management tool, in the device policy management, verify the DOD root and intermediate PKI certificates are installed. On the Samsung Android device: 1. Open Settings >> Security and privacy >> More security settings >> View security certificates. 2. In the User tab, verify the DOD root and intermediate PKI certificates are listed in the device. If on the management tool the DOD root and intermediate PKI certificates are not listed in the device, or on the Samsung Android device the DOD root and intermediate PKI certificates are not listed in the device, this is a finding.

Fix: F-62292r931128_fix

Install the DOD root and intermediate PKI certificates into the Samsung Android devices. The current DOD root and intermediate PKI certificates may be obtained in self-extracting zip files at https://cyber.mil/pki-pke (for NIPRNet). On the management tool, in the device policy management, install the DOD root and intermediate PKI certificates.

b
Samsung Android must be configured to enforce an application installation policy by specifying an application allowlist that restricts applications by the following characteristics: Names.
CM-7 - Medium - CCI-001764 - V-258644 - SV-258644r931132_rule
RMF Control
CM-7
Severity
Medium
CCI
CCI-001764
Version
KNOX-14-110190
Vuln IDs
  • V-258644
Rule IDs
  • SV-258644r931132_rule
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 to core and preinstalled applications. Core application: Any application integrated into the OS by the OS or MD vendors. Preinstalled application: Additional noncore applications included in the OS build by the OS vendor, MD vendor, or wireless carrier. 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 unauthorized and malicious applications to be downloaded, installed, and executed on the mobile device, causing a compromise of DOD data accessible by these applications. The application allowlist, in addition to controlling the installation of applications on the MD, must control user access/execution of all core applications (included in the OS by the OS vendor) and preinstalled applications (provided by the MD vendor and wireless carrier), or the MD must provide an alternate method of restricting user access/execution to core and preinstalled applications. SFR ID: FMT_SMF_EXT.1.1 #8b
Checks: C-62384r931130_chk

Review the configuration to determine if the Samsung Android devices are allowing users to install only applications that have been approved by the Authorizing Official (AO). This validation procedure is performed only on the management tool. On the management tool, in the app catalog for managed Google Play, verify only AO-approved apps are available. If on the management tool the app catalog for managed Google Play includes non-AO-approved apps, this is a finding.

Fix: F-62293r931131_fix

Configure Samsung Android devices to allow users to install only applications that have been approved by the AO. In addition to any local policy, the AO must not approve applications that have certain prohibited characteristics. These are covered in KNOX-14-110200. On the management tool, in the app catalog for managed Google Play, add each AO-approved app to be available. Note: Managed Google Play is an allowed App Store.

b
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 encrypted but not FIPS 140-2 validated) data sharing with other MDs or printers.
CM-6 - Medium - CCI-000366 - V-258645 - SV-258645r931135_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110200
Vuln IDs
  • V-258645
Rule IDs
  • SV-258645r931135_rule
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 unauthorized and malicious applications to be downloaded, installed, and executed on the mobile device, causing a compromise of DOD data accessible by these applications. Applications with the listed characteristics have features that can cause the compromise of sensitive DOD data or have features with no known application in the DOD environment. Application note: 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 to core and preinstalled applications. Core application: Any application integrated into the OS by the OS or MD vendors. Preinstalled application: Additional noncore applications included in the OS build by the OS vendor, MD vendor, or wireless carrier. SFR ID: FMT_SMF_EXT.1.1 #8b
Checks: C-62385r931133_chk

Verify requirement KNOX-14-110190 (managed Google Play) has been implemented. If managed Google Play has not been implemented, this is a finding.

Fix: F-62294r931134_fix

The Authorizing Official (AO) must not approve applications with the following characteristics for installation by users on the device: - 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; - Payment processing; and - Allows unencrypted (or encrypted but not FIPS 140-2 validated) data sharing with other MDs, display screens (screen mirroring), or printers. Implement managed Google Play (refer to requirement KNOX-14-110190).

b
Samsung Android must be configured to not display the following (Work Environment) notifications when the device is locked: All notifications.
AC-11 - Medium - CCI-000060 - V-258646 - SV-258646r931138_rule
RMF Control
AC-11
Severity
Medium
CCI
CCI-000060
Version
KNOX-14-110210
Vuln IDs
  • V-258646
Rule IDs
  • SV-258646r931138_rule
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 notifications can contain sensitive information. When they are available on the lock screen, an adversary can see them merely by being in close physical proximity to the device. Configuring the MOS to not send notifications to the lock screen mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #18
Checks: C-62386r931136_chk

Review the configuration to determine if the Samsung Android devices are not displaying (Work Environment) notifications when the device is locked. Notifications of incoming phone calls are acceptable even when the device is locked. This validation procedure is performed on both the management tool Administration Console and the Samsung Android device. On the management tool, in the device restrictions section, verify "Unredacted Notifications" is set to "Disallow". On the Samsung Android device: 1. Open Settings >> Notifications. 2. Verify "Lock screen notifications" menu is disabled. If on the management tool "Unredacted Notifications" is not set to "Disallow", or on the Samsung Android device "Notifications" menu is not disabled, this is a finding.

Fix: F-62295r931137_fix

Configure the Samsung Android devices to not display (Work Environment) notifications when the device is locked. On the management tool, in the device restrictions section, set "Unredacted Notifications" to "Disallow".

b
Samsung Android must be configured to enable audit logging.
CM-6 - Medium - CCI-000366 - V-258647 - SV-258647r931141_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110220
Vuln IDs
  • V-258647
Rule IDs
  • SV-258647r931141_rule
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 security. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62387r931139_chk

Review the configuration to determine if the Samsung Android devices are enabling audit logging. This validation procedure is performed on the management tool only. On the management tool, in the device restrictions, verify "Security logging" is set to "Enable". If on the management tool "Security logging" is not set to "Enable", this is a finding.

Fix: F-62296r931140_fix

Configure the Samsung Android devices to enable audit logging. On the management tool, in the device restrictions section, set "Security logging" to "Enable".

b
Samsung Android must be configured to prevent users from adding personal email accounts to the work email app.
CM-6 - Medium - CCI-000366 - V-258648 - SV-258648r931144_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110230
Vuln IDs
  • V-258648
Rule IDs
  • SV-258648r931144_rule
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 allowlisted accounts mitigates this vulnerability. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62388r931142_chk

Review the configuration to determine if the Samsung Android devices are preventing users from adding personal email accounts to the work email app. On the management tool, in the device restrictions section, verify "Modify accounts" is set to "Disallow". On the Samsung Android device: 1. Open Settings >> Accounts and backup >> Manage accounts. 2. Verify no account can be added. If on the management tool "Modify accounts" is not set to "Disallow", or on the Samsung Android device an account can be added, this is a finding.

Fix: F-62297r931143_fix

Configure the Samsung Android devices to prevent users from adding personal email accounts to the work email app. On the management tool, in the device restrictions, set "Modify accounts" to "Disallow".

b
Samsung Android must be configured to not allow backup of all applications, configuration data to remote systems. - Disable Data Sync Framework.
SC-4 - Medium - CCI-001090 - V-258649 - SV-258649r931147_rule
RMF Control
SC-4
Severity
Medium
CCI
CCI-001090
Version
KNOX-14-110240
Vuln IDs
  • V-258649
Rule IDs
  • SV-258649r931147_rule
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 synchronize data across multiple devices. In this case, DOD devices may synchronize DOD sensitive information to a user's personal device or other unauthorized computers that are vulnerable to breach. The Data Sync Framework allows apps to synchronize data between the mobile device and other web-based services. This uses accounts for services the user has added to the mobile device. Preventing the user from adding accounts to the device mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #40
Checks: C-62389r931145_chk

Verify requirement KNOX-14-110230 (disallow modify accounts) has been implemented. If disallowing modify accounts has not been implemented, this is a finding.

Fix: F-62298r931146_fix

Disallow modify accounts (refer to requirement KNOX-14-110230).

b
Samsung Android must allow only the Administrator (management tool) to perform the following management function: Install/remove DOD root and intermediate PKI certificates.
CM-6 - Medium - CCI-000366 - V-258650 - SV-258650r931150_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110260
Vuln IDs
  • V-258650
Rule IDs
  • SV-258650r931150_rule
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
Checks: C-62390r931148_chk

Review the configuration to determine if the Samsung Android devices are preventing users from removing DOD root and intermediate PKI certificates. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "Configure credentials" is set to "Disallow". On the Samsung Android device: 1. Open Settings >> Security and privacy >> More security settings >> View security certificates. 2. In the System tab, verify no listed certificate in the device can be untrusted. 3. In the User tab, verify no listed certificate in the device can be removed. If on the management tool in the device restrictions "Configure credentials" is not set to "Disallow", or on the Samsung Android device a certificate can be untrusted or removed, this is a finding.

Fix: F-62299r931149_fix

Configure the Samsung Android devices to prevent users from removing DOD root and intermediate PKI certificates. On the management tool, in the device restrictions, set "Configure credentials" to "Disallow".

b
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.
CM-6 - Medium - CCI-000366 - V-258651 - SV-258651r931153_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110270
Vuln IDs
  • V-258651
Rule IDs
  • SV-258651r931153_rule
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 of DOD data accessible by these unauthorized/malicious applications. SFR ID: FMT_SMF_EXT.1.1 #8a
Checks: C-62391r931151_chk

Review the configuration to determine if the Samsung Android devices are disabling unauthorized application repositories. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "installs from unknown sources globally" is set to "Disallow". On the Samsung Android device: 1. Open Settings >> Security and privacy >> More security settings >> Install unknown apps. 2. Verify each app listed has the status "Disabled" under the app name or that no apps are listed. If on the management tool "installs from unknown sources globally" is not set to "Disallow", or on the Samsung Android device an app is listed with a status other than "Disabled", this is a finding.

Fix: F-62300r931152_fix

Configure the Samsung Android devices to disable unauthorized application repositories. On the management tool, in the device restrictions, set "installs from unknown sources globally" to "Disallow". Note: Google Play must not be disabled. Disabling Google Play will cause system instability and critical updates will not be received.

a
Samsung Android must be configured to enable Common Criteria (CC) mode.
CM-6 - Low - CCI-000366 - V-258652 - SV-258652r931156_rule
RMF Control
CM-6
Severity
Low
CCI
CCI-000366
Version
KNOX-14-110280
Vuln IDs
  • V-258652
Rule IDs
  • SV-258652r931156_rule
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 Android Enterprise (AE) CC mode on a Samsung Android device, additional Samsung-specific security features are also enabled. CC mode implements the following behavioral/functional changes to meet MDFPP requirements: - How the Bluetooth and Wi-Fi keys are stored using different types of encryption. - Download mode is disabled and all updates will occur via Firmware Over the Air (FOTA) only. In addition, CC mode adds new restrictions not to meet MDFPP requirements but to offer better security above what is required: - Force password information following FOTA update for consistency. - Disable Remote unlock by FindMyMobile. - Restrict biometric attempts to 10. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62392r931154_chk

Review the configuration to determine if the Samsung Android devices are enabling CC mode. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the device restrictions, verify "Common Criteria mode" is set to "Enable". On the Samsung Android device, put the device into "Download mode" (press and hold down the Home + Power + Volume Down buttons at the same time) and verify the text "Blocked by CC Mode" is displayed on the screen. If on the management tool "Common Criteria mode" is not set to "Enable", or on the Samsung Android device the text "Blocked by CC Mode" is not displayed in "Download mode", this is a finding.

Fix: F-62301r931155_fix

Configure the Samsung Android devices to enable CC mode. On the management tool, in the device restrictions, set "Common Criteria mode" to "Enable".

a
Samsung Android must not accept the certificate when it cannot establish a connection to determine the validity of a certificate.
IA-5 - Low - CCI-000185 - V-258653 - SV-258653r931159_rule
RMF Control
IA-5
Severity
Low
CCI
CCI-000185
Version
KNOX-14-110290
Vuln IDs
  • V-258653
Rule IDs
  • SV-258653r931159_rule
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, if the MOS were to disable functionality when it could not determine the validity of the certificate, this could result in a denial of service. Therefore, the ability to provide exceptions is appropriate to balance the tradeoff between security and functionality. Always accepting certificates when they cannot be determined to be valid is the most extreme exception policy and is not appropriate in the DOD context. Involving an Administrator or user in the exception decision mitigates this risk to some degree. SFR ID: FIA_X509_EXT_2.2
Checks: C-62393r931157_chk

Verify requirement KNOX-14-110280 (Common Criteria mode) has been implemented. If "Common Criteria mode" has not been implemented, this is a finding.

Fix: F-62302r931158_fix

Implement "Common Criteria mode" (refer to requirement KNOX-14-110280).

b
Samsung Android device users must complete required training.
CM-6 - Medium - CCI-000366 - V-258654 - SV-258654r931162_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-110300
Vuln IDs
  • V-258654
Rule IDs
  • SV-258654r931162_rule
The security posture of Samsung devices requires the 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 an unmanaged personal space, the user must receive training on risks. If a user is not aware of their responsibilities and does not comply with UBE requirements, the security posture of the Samsung mobile device may become compromised, and DOD sensitive data may become compromised. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62394r931160_chk

Review a sample of site User Agreements for Samsung device users or similar training records and training course content. Verify Samsung device users have completed required training. The intent is that required training is renewed on a periodic basis in a time period determined by the AO. If any Samsung device user has not completed required training, this is a finding.

Fix: F-62303r931161_fix

Have all Samsung device users complete training on the following topics. Users should acknowledge they have reviewed training via a signed User Agreement or similar written record. Training topics: - Operational security concerns introduced by unmanaged applications/unmanaged personal space, including applications using global positioning system (GPS) tracking. - Need to ensure no DOD data is saved to the personal space or transmitted from a personal app (for example, from personal email). - If the Purebred key management app is used, users are responsible for maintaining positive control of their credentialed device at all times. The DOD PKI certificate policy requires subscribers to maintain positive control of the devices that contain private keys and report any loss of control so that the credentials can be revoked. Upon device retirement, turn-in, or reassignment, ensure a factory data reset is performed prior to device handoff. Follow mobility service provider decommissioning procedures as applicable. - How to configure the following UBE controls (users must configure the control) on the Samsung device: 1. Secure use of Calendar Alarm. 2. Local screen mirroring and MirrorLink procedures (authorized/not authorized for use). 3. Do not connect Samsung devices (via either DeX Station or dongle) to any DOD network via Ethernet connection. 4. Do not upload DOD contacts via smart call and caller ID services. 5. Disable Wi-Fi Sharing. 6. Do not configure a DOD network (work) VPN profile on any third-party VPN client installed in the personal space. - AO guidance on acceptable use and restrictions, if any, on downloading and installing personal apps and data (music, photos, etc.) in the Samsung device personal space.

c
The Samsung Android device must have the latest available Samsung Android operating system (OS) installed.
CM-6 - High - CCI-000366 - V-258655 - SV-258655r931165_rule
RMF Control
CM-6
Severity
High
CCI
CCI-000366
Version
KNOX-14-110310
Vuln IDs
  • V-258655
Rule IDs
  • SV-258655r931165_rule
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
Checks: C-62395r931163_chk

Review the configuration to confirm the Samsung Android devices have the most recently released version of Samsung Android installed. This procedure is performed on both the management tool and the Samsung Android device. In the management tool management console, review the version of Samsung Android installed on a sample of managed devices. This procedure will vary depending on the management tool product. Refer to the notes below to determine the latest available OS version. On the Samsung Android device, to determine the installed OS version: 1. Open Settings. 2. Tap "About phone". 3. Tap "Software information". If the installed version of Android OS on any reviewed Samsung devices is not the latest released by the wireless carrier, this is a finding. Note: Some wireless carriers list the version of the latest Android OS release by mobile device model online: ATT: https://www.att.com/devicehowto/dsm.html#!/popular/make/Samsung Verizon Wireless: https://www.verizonwireless.com/support/software-updates/ Google Android OS patch website: https://source.android.com/security/bulletin/ Samsung Android OS patch website: https://security.samsungmobile.com/securityUpdate.smsb

Fix: F-62304r931164_fix

Install the latest released version of Samsung Android OS on all managed Samsung devices. Note: In most cases, OS updates are released by the wireless carrier (for example, Sprint, T-Mobile, Verizon Wireless, and ATT).

b
The Samsung Android device must be configured to enable Certificate Revocation List (CRL) status checking.
CM-6 - Medium - CCI-000366 - V-258656 - SV-258656r931168_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-125010
Vuln IDs
  • V-258656
Rule IDs
  • SV-258656r931168_rule
A 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 associated with using a compromised certificate. For this reason, users must not be able to disable this configuration. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62396r931166_chk

Review the configuration to confirm that revocation checking is enabled. Verify the revocation checklist is set to "All Applications". This procedure is performed on the management tool. On the management tool: 1. Open "Certificates Policy >> Revocation" section. 2. Select "Get CRL". 3. Verify Toast message "Get revocation check: true". If on the management tool the revocation check is disabled, this is a finding.

Fix: F-62305r931167_fix

Configure the Samsung Android devices to enable CRL revocation checks for all applications. On the management tool, in the Certificate Policy restrictions, enable "Revocation Checks" for "All Applications".

b
The Samsung Android device must be configured to enforce that Wi-Fi Sharing is disabled.
CM-6 - Medium - CCI-000366 - V-258657 - SV-258657r931171_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-125020
Vuln IDs
  • V-258657
Rule IDs
  • SV-258657r931171_rule
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" device access to a corporate Wi-Fi network and may possibly bypass the network access control mechanisms. This risk can be partially mitigated by requiring the use of a preshared key for personal hotspots. SFR ID: FMT_SMF_EXT.1.1 #47
Checks: C-62397r931169_chk

Verify requirement KNOX-14-110160 ("Disallow config tethering") has been implemented. If "Disallow config tethering" has not been implemented, this is a finding.

Fix: F-62306r931170_fix

Implement "Disallow config tethering" (refer to requirement KNOX-14-110160).

b
The Samsung Android device work profile must be configured to enforce the system application disable list.
CM-6 - Medium - CCI-000366 - V-258658 - SV-258658r931174_rule
RMF Control
CM-6
Severity
Medium
CCI
CCI-000366
Version
KNOX-14-125030
Vuln IDs
  • V-258658
Rule IDs
  • SV-258658r931174_rule
The system application disable list controls user access to/execution of all core and preinstalled applications. Core application: Any application integrated into Samsung Android 14 by Samsung. Preinstalled application: Additional noncore applications included in the Samsung Android 14 build by Samsung or the wireless carrier. Some system applications can compromise DOD data or upload users' information to non-DOD-approved servers. A user must be blocked from using such applications that exhibit behavior that can result in compromise of DOD data or DOD user information. The site administrator must analyze all preinstalled applications on the device and disable all applications not approved for DOD use by configuring the system application disable list. SFR ID: FMT_SMF_EXT.1.1 #47
Checks: C-62398r931172_chk

Review the configuration to confirm the system application disable list is enforced. This setting is enforced by default. Verify that only approved system apps have been placed on the core allowlist. This procedure is performed on the management tool. Review the system app allowlist and verify only approved apps are on the list. On the management tool: 1. Open "Apps management" section. 2. Select "Unhide apps". 3. Verify names of apps are listed. If on the management tool the system app allowlist contains unapproved core apps, this is a finding.

Fix: F-62307r931173_fix

Configure the Samsung Android 14 device to enforce the system application disable list. The required configuration is the default configuration when the device is enrolled. If the device configuration is changed, use the following procedure to bring the device back into compliance: On the management tool: 1. Open "Apps management" section. 2. Select "Hide apps". 3. Enter names of apps to hide. Configure a list of approved Samsung core and preinstalled apps in the core app allowlist.

a
The Samsung Android device must be configured to disable the use of third-party keyboards.
CM-6 - Low - CCI-000366 - V-258659 - SV-258659r931177_rule
RMF Control
CM-6
Severity
Low
CCI
CCI-000366
Version
KNOX-14-125070
Vuln IDs
  • V-258659
Rule IDs
  • SV-258659r931177_rule
Many third-party keyboard applications are known to contain malware. SFR ID: FMT_SMF_EXT.1.1 #47
Checks: C-62399r931175_chk

Review the managed Samsung Android 14 configuration settings to confirm that no third-party keyboards are enabled. This procedure is performed on the management tool. On the management tool: 1. Open "Input methods". 2. Tap "Set input methods". 3. Verify only the approved keyboards are selected. If third-party keyboards are allowed, this is a finding.

Fix: F-62308r931176_fix

Configure the Samsung Android 14 device to disallow the use of third-party keyboards. On the management tool: 1. Open "Input methods". 2. Tap "Set input methods". 3. Select only the approved keyboard. Additionally, Administrators can configure application allowlists for Google Play that do not have any third-party keyboards for user installation.

b
The Samsung Android device must be configured to disable all data signaling over [assignment: list of externally accessible hardware ports (for example, USB)].
AC-6 - Medium - CCI-002235 - V-258660 - SV-258660r931180_rule
RMF Control
AC-6
Severity
Medium
CCI
CCI-002235
Version
KNOX-14-125080
Vuln IDs
  • V-258660
Rule IDs
  • SV-258660r931180_rule
If a user is able to configure the security setting, the user could inadvertently or maliciously set it to a value that poses unacceptable risk to DOD information systems. An adversary could exploit vulnerabilities created by the weaker configuration to compromise DOD sensitive information. SFR ID: FMT_MOF_EXT.1.2 #24
Checks: C-62400r931178_chk

Review the device configuration to confirm the USB port is disabled except for charging the device. On the management tool: Verify "Enable USB data signaling" is toggled to "OFF". If on the management tool the USB port is not disabled, this is a finding.

Fix: F-62309r931179_fix

Configure Samsung Android 14 device to disable the USB port (except for charging the device). On the management tool: Toggle "Enable USB data signaling" to "OFF".

a
The Samsung Android device must be configured to perform the following management function: Disable Phone Hub.
SC-4 - Low - CCI-001090 - V-258661 - SV-258661r931183_rule
RMF Control
SC-4
Severity
Low
CCI
CCI-001090
Version
KNOX-14-125090
Vuln IDs
  • V-258661
Rule IDs
  • SV-258661r931183_rule
It may be possible to transfer work profile data on a DOD Android device to an unauthorized Chromebook if the user has the same Google Account set up on the Chromebook. This may result in the exposure of sensitive DOD data. SFR ID: FMT_MOF_EXT.1.2 #47
Checks: C-62401r931181_chk

Review the management tool to confirm Phone Hub has been disabled. On the management tool: 1. Open "Nearby notification streaming policy". 2. Verify "Nearby notification streaming policy" is set to "Disabled". 3. Open "Nearby app streaming policy". 4. Verify "Nearby app streaming policy" is set to "Disabled". If on the management tool the "Nearby Streaming Policy" is not set to "Disabled", this is a finding. Note: From a Chromebook, if a device is connected to the Phone Hub, try to set up the Notifications. It will fail to connect to the device to complete the setup if Phone Hub has been disabled on the DOD Android device.

Fix: F-62310r931182_fix

Configure the Samsung Android 14 device to disable the nearby notification and app streaming policy to disable Phone Hub. On the management tool: 1. Open "Nearby notification streaming policy". 2. Set "Nearby notification streaming policy" to "Disabled". 3. Open "Nearby app streaming policy". 4. Set "Nearby app streaming policy" to "Disabled".

b
Samsung Android must be configured to disable ad hoc wireless client-to-client connection capability.
SC-40 - Medium - CCI-002536 - V-258662 - SV-258662r931186_rule
RMF Control
SC-40
Severity
Medium
CCI
CCI-002536
Version
KNOX-14-140110
Vuln IDs
  • V-258662
Rule IDs
  • SV-258662r931186_rule
Ad hoc wireless client-to-client connections allow mobile devices to communicate with each other directly, circumventing network security policies and making the traffic invisible. This could allow the exposure of sensitive DOD data and increase the risk of downloading and installing malware on the DOD mobile device. SFR ID: FMT_SMF_EXT.1.1/WLAN
Checks: C-62402r931184_chk

Review the configuration to determine if the Samsung Android devices are disallowing Wi-Fi Direct. This validation procedure is performed on both the management tool and the Samsung Android device. On the management tool, in the user restrictions, verify "Wi-Fi Direct" has been set to "Disallow". On the Samsung Android device: 1. Open Settings >> Connections >> Wi-Fi. 2. From the hamburger menu, select Wi-Fi Direct. 3. Verify no available devices are listed. If on the management tool "Wi-Fi Direct" is not set to "Disallow", or on the Samsung Android device a Wi-Fi direct device is listed that can be connected to, this is a finding.

Fix: F-62311r931185_fix

Configure the Samsung Android devices to disallow Wi-Fi Direct. On the management tool, in the user restrictions, set "Wi-Fi Direct" to "Disallow". Wi-Fi direct connections and pairing between devices will become unavailable.