Apple iOS 9 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 e-mail to the following address: [email protected]

Details

Version / Release: V1R1

Published: 2016-05-11

Updated At: 2018-09-23 02:02:17

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

    Vuln Rule Version CCI Severity Title Description Status Finding Details Comments
    SV-76057r1_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-76379r1_rule AIOS-01-080004 CCI-000205 LOW Apple iOS must enforce a minimum password length of 6 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-76381r1_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-76383r1_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-76385r1_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-76387r1_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-76389r1_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-76391r1_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 between the users' Macs, iPhones, and iPads. An adversary may use any of the stored iCloud keychain passwords after u
    SV-76393r1_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 automatically uploaded 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-76395r1_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 automatically uploaded 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-76397r1_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-76399r1_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 th
    SV-76401r1_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 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-76403r1_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 that users can obtain relevant information in a timely manner without having to frequently unlock the phone to determine if there are new notifications. Howev
    SV-76405r1_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-76407r2_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-76409r1_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-76411r1_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-76413r1_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-76415r1_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-76417r1_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-76419r1_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-76421r1_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-76423r1_rule AIOS-02-090100 CCI-000366 MEDIUM Apple iOS must implement the management setting: Disable Allow MailDrop. MailDrop allows users to send large attachments in up to 5GB 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-76425r1_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-76429r1_rule AIOS-03-080101 CCI-000366 MEDIUM Apple iOS must implement the management setting: use SSL for Exchange Active Sync. 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-76431r1_rule AIOS-03-080102 CCI-000366 MEDIUM Apple iOS must implement the management setting: not allow messages in an Active Sync 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-76433r2_rule AIOS-05-080001 CCI-000366 MEDIUM Apple iOS must implement the management setting: disable Airdrop. 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-76435r1_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-76437r1_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 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 user or to gather intell
    SV-76439r2_rule AIOS-05-080104 CCI-000366 LOW Apple iOS must not include applications with the following characteristics: payment processing (Apple Pay). Apple Pay is a mobile payment technology that enables users to make purchases with their Apple iOS devices, provided that the vendor supports the required Near Field Communications (NFC) interface to Apple Pay. If the payment system is vulnerable to breac
    SV-76441r1_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-76443r1_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-76445r1_rule AIOS-11-080200 CCI-000366 LOW Apple iOS must enable VPN protection. A key characteristic of a mobile device is that they typically will communicate wirelessly and are often expected to reside in locations outside the physical security perimeter of a DoD facility. In these circumstances, the threat of eavesdropping is subs
    SV-76447r1_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-76449r1_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-76451r1_rule AIOS-11-080203 CCI-000366 LOW Apple iOS must implement the management setting: force Apple Watch wrist detection. As a personal device, it is key that any DoD sensitive 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 takes the watch off, th
    SV-79195r1_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 ser
    SV-79199r1_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 #45System Administrator