Apple iOS 10 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: V1R3

Published: 2017-02-14

Updated At: 2018-10-12 01:23:13

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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-86397r1_rule AIOS-01-080002 CCI-000057 MEDIUM Apple iOS must 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-86399r1_rule AIOS-01-080004 CCI-000205 LOW Apple iOS must 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-86401r1_rule AIOS-01-080005 CCI-000044 LOW Apple iOS must 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 gives
    SV-86403r1_rule AIOS-01-080006 CCI-002476 HIGH Apple iOS must require a valid password be successfully entered before the mobile device data is unencrypted. Passwords provide a form of access control that prevents unauthorized individuals from accessing computing resources and sensitive data. Passwords may also be a source of entropy for generation of key encryption or data encryption keys. If a password is n
    SV-86405r1_rule AIOS-01-080007 CCI-000366 LOW Apple iOS must 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-86407r1_rule AIOS-02-080002 CCI-000366 MEDIUM Apple iOS must not allow backup to remote systems (iCloud). 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-86409r1_rule AIOS-02-080003 CCI-000366 MEDIUM Apple iOS must not allow backup to remote systems (iCloud document and data synchronization). Backups to remote systems (including cloud backup and cloud document syncing) 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
    SV-86411r1_rule AIOS-02-080004 CCI-000366 MEDIUM Apple iOS must not allow backup to remote systems (iCloud Keychain). The iCloud Keychain is an Apple iOS function that will store users' account names and passwords in iCloud and then synchronize this data among the users' Macs, iPhones, and iPads. An adversary may use any of the stored iCloud keychain passwords after unlo
    SV-86413r1_rule AIOS-02-080005 CCI-000366 MEDIUM Apple iOS must not allow backup to remote systems (My Photo Stream). When My Photo Stream is enabled, sensitive photos will be uploaded automatically to Apple-specified servers and available on other Apple iOS devices associated with the same Apple ID, provided that the other device also has My Photo Stream enabled. This p
    SV-86415r1_rule AIOS-02-080006 CCI-000366 MEDIUM Apple iOS must not allow backup to remote systems (iCloud Photo Sharing, also known as Shared Photo Streams). When iCloud Photo Sharing is enabled, sensitive photos will be uploaded automatically to Apple-specified servers and available on the Apple IOS devices of other users who have accepted invitations to participate in iCloud Photo Sharing. This potentially p
    SV-86417r1_rule AIOS-02-080007 CCI-000381 LOW Apple iOS must disable automatic transfer of diagnostic data to an external device other than an MDM service with which the device has enrolled. Many software systems automatically send diagnostic data to the manufacturer or a third party. This data enables the developers to understand real-world field behavior and improve the product based on that information. Unfortunately, it can also reveal in
    SV-86419r1_rule AIOS-02-080008 CCI-000366 LOW Apple iOS must implement the management setting: limit Ad Tracking. Ad Tracking refers to the advertisers' ability to categorize the device and spam the user with ads that are most relevant to the user's preferences. By not "Force limiting ad tracking", advertising companies are able to gather information about the user a
    SV-86421r1_rule AIOS-02-080009 CCI-000062 MEDIUM Apple iOS must not display notifications when the device is locked. Many mobile devices display notifications on the lock screen so 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
    SV-86423r1_rule AIOS-02-080010 CCI-000062 MEDIUM Apple iOS must not display notifications (calendar information) when the device is locked. Many mobile devices display notifications (including calendar information) on the lock screen so users can obtain relevant information in a timely manner without having to frequently unlock the phone to determine if there are new notifications. However, i
    SV-86425r1_rule AIOS-02-080011 CCI-000366 MEDIUM Apple iOS must not include applications with the following characteristics: Siri when the device is locked. On Apple iOS devices, users can access the device's contact database or calendar to obtain phone numbers and other information using a human voice even when the mobile device is locked. Often this information is Personally Identifiable Information (PII),
    SV-86427r1_rule AIOS-02-080012 CCI-000366 MEDIUM Apple iOS must not include applications with the following characteristics: Voice dialing application if available when MD is locked. On Apple iOS devices, users can access the device's contact database or calendar to obtain phone numbers and other information using a human voice even when the mobile device is locked. Often this information is Personally Identifiable Information (PII),
    SV-86429r1_rule AIOS-02-080013 CCI-000366 MEDIUM Apple iOS must be configured to disable Touch ID. Many mobile devices now permit a user to unlock the user's device by presenting a fingerprint to an embedded fingerprint reader. Other biometrics and token-based systems are feasible as well. None of these alternatives are currently evaluated in a Common
    SV-86431r1_rule AIOS-02-080014 CCI-000366 MEDIUM Apple iOS must not allow non-DoD applications to access DoD data. Managed apps have been approved for the handling of DoD-sensitive information. Unmanaged apps are provided for productivity and morale purposes but are not approved to handle DoD-sensitive information. Examples of unmanaged apps include apps for news serv
    SV-86433r1_rule AIOS-02-080016 CCI-000366 LOW Apple iOS must implement the management setting: not allow automatic completion of Safari browser passcodes. The AutoFill functionality in the Safari web browser allows the user to complete a form that contains sensitive information, such as PII, without previous knowledge of the information. By allowing the use of the AutoFill functionality, an adversary who le
    SV-86463r1_rule AIOS-02-080017 CCI-000366 HIGH Apple iOS must implement the management setting: Encrypt iTunes backups. When syncing an Apple iOS device to a computer running iTunes, iTunes will prompt the user to back up the Apple iOS device. If the performed backup is not encrypted, this could lead to the unauthorized disclosure of DoD-sensitive information if non-DoD pe
    SV-86465r1_rule AIOS-02-080101 CCI-000366 LOW Apple iOS must not allow backup to remote systems (enterprise books). Enterprise books may contain DoD-sensitive information. When enterprise books are backed up, they are vulnerable to attacks on the backup systems and media. Disabling the backup capability mitigates this risk. If such books are lost, accidentally deleted,
    SV-86467r1_rule AIOS-02-080102 CCI-000366 LOW Apple iOS must implement the management setting: not allow use of Handoff. Handoff permits a user of an Apple iOS device to transition user activities from one device to another. Handoff passes sufficient information between the devices to describe the activity, but app data synchronization associated with the activity is handle
    SV-86469r1_rule AIOS-02-080103 CCI-000366 MEDIUM Apple iOS must not allow backup to remote systems (managed applications data stored in iCloud). Storing data with a non-DoD cloud provider may leave the data vulnerable to breach. Disabling non-DoD cloud services mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #45
    SV-86471r1_rule AIOS-02-080104 CCI-000366 LOW Apple iOS must implement the management setting: require the user to enter a password when connecting to an AirPlay-enabled device for the first time. When a user is allowed to use AirPlay without a password, there is the potential that it may mistakenly associate the Apple iOS device with an AirPlay-enabled device other than the one intended (i.e., by choosing the wrong one from the AirPlay list displa
    SV-86475r1_rule AIOS-02-090100 CCI-000366 MEDIUM Apple iOS must implement the management setting: Disable Allow MailDrop. MailDrop allows users to send large attachments up to 5 GB in size via iCloud. Storing data with a non-DoD cloud provider may leave the data vulnerable to breach. Disabling non-DoD cloud services mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #45
    SV-86481r1_rule AIOS-02-090101 CCI-000366 MEDIUM Apple iOS must implement the management setting: Disable Allow iCloud Photo Library. Storing data with a non-DoD cloud provider may leave the data vulnerable to breach. Disabling non-DoD cloud services mitigates this risk. SFR ID: FMT_SMF_EXT.1.1 #45
    SV-86489r1_rule AIOS-02-090103 CCI-000366 HIGH Apple iOS device must have the latest available iOS operating system installed. Required security features are not available in earlier OS versions. In addition, there are known vulnerabilities in earlier versions. SFR ID: FMT_SMF_EXT.1.1 #45
    SV-86491r1_rule AIOS-03-080101 CCI-000366 MEDIUM Apple iOS must implement the management setting: use SSL for Exchange ActiveSync. Exchange email messages are a form of data in transit and thus are vulnerable to eavesdropping and man-in-the-middle attacks. Secure Sockets Layer (SSL), also referred to as Transport Layer Security (TLS), provides encryption and authentication services t
    SV-86493r1_rule AIOS-03-080102 CCI-000366 MEDIUM Apple iOS must implement the management setting: not allow messages in an ActiveSync Exchange account to be forwarded or moved to other accounts in the Apple iOS Mail app. The Apple iOS Mail app can be configured to support multiple email accounts concurrently. These email accounts are likely to involve content of varying degrees of sensitivity (e.g., both personal and enterprise messages). To prevent the unauthorized and u
    SV-86495r1_rule AIOS-05-080001 CCI-000366 MEDIUM Apple iOS must implement the management setting: Treat Airdrop as an unmanaged destination. An Airdrop feature is a way to send contact information or photos to other users with this same feature enabled. This feature enables a possible attack vector for adversaries to exploit. Once the attacker has gained access to the information broadcast by
    SV-86497r1_rule AIOS-05-080101 CCI-000366 MEDIUM Apple iOS must implement the management setting: not have any Family Members in Family Sharing. Apple's Family Sharing service allows Apple iOS users to create a Family Group whose members have several shared capabilities, including the ability to lock, wipe, play a sound on, or locate the Apple iOS devices of other members. Each member of the group
    SV-86499r1_rule AIOS-05-080102 CCI-000366 MEDIUM Apple iOS must implement the management setting: not share location data through iCloud. Sharing of location data is an operations security (OPSEC) risk because it potentially allows an adversary to determine a DoD user's location and movements and patterns in those movements over time. An adversary could use this information to target the us
    SV-86501r1_rule AIOS-10-080102 CCI-000366 MEDIUM Apple iOS must implement the management setting: remove managed applications upon unenrollment from MDM. When a device is unenrolled from MDM, it is possible to relax the security policies that the MDM had implemented on the device. This may cause apps and data to be more vulnerable than they were prior to enrollment. Removing managed apps (and consequently
    SV-86503r1_rule AIOS-10-080103 CCI-000366 MEDIUM Apple iOS must implement the management setting: not allow a user to remove Apple iOS configuration profiles that enforce DoD security requirements. Configuration profiles define security policies on Apple iOS devices. If a user is able to remove a configuration profile, the user can then change the configuration that had been enforced by that policy. Relaxing security policies may introduce vulnerabi
    SV-86505r1_rule AIOS-11-080201 CCI-000097 MEDIUM Apple iOS must not allow backup 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-86507r1_rule AIOS-11-080202 CCI-000366 MEDIUM Apple iOS must wipe protected or sensitive data upon unenrollment from MDM. When a mobile device is no longer going to be managed by MDM technologies, its protected/sensitive data must be sanitized because it will no longer be protected by the MDM software, so it is at much greater risk of unauthorized access and disclosure. SFR
    SV-86509r1_rule AIOS-11-080203 CCI-000366 LOW Apple iOS must implement the management setting: force Apple Watch wrist detection. Because Apple Watch is a personal device, it is key that any sensitive DoD data displayed on the Apple Watch not be viewable when the watch is not in the immediate possession of the user. This control ensures the Apple Watch screen locks when the user tak
    SV-86513r1_rule AIOS-98-080208 CCI-000366 LOW Before establishing a user session, Apple iOS must display an administrator-specified advisory notice and consent warning banner regarding use of the mobile operating system. To facilitate the legal monitoring of mobile devices and investigations pertaining to those devices, the MOS is required to display the DoD-approved system use notification message or banner before granting access to the system. System use notification me
    SV-86955r1_rule AIOS-01-100100 CCI-000366 MEDIUM Apple iOS must be configured to wipe all sensitive DoD data (Controlled Unclassified Information (CUI)/For Official Use Only (FOUO)) and Personally Identifiable Information (PII) data during a remote wipe command from the MDM server. DoD sensitive data (CUI/FOUO) or PII data downloaded from DoD web sites via Safari will be saved by default in a non-managed app on a DoD iOS device. If the device is wiped via an MDM Enterprise remote wipe command, data saved in non-managed apps will no