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Check: AIOS-02-080010

Apple iOS 10 STIG: AIOS-02-080010 (in versions v1 r3 through v1 r1)

Title

Apple iOS must not display notifications (calendar information) when the device is locked. (Cat II impact)

Discussion

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, 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 #21

Check Content

Review configuration settings to confirm "Show Today view in Lock screen" is disabled. This check procedure is performed on both the Apple iOS management tool and the Apple iOS device. Note: If an organization has multiple configuration profiles, the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review. In the Apple iOS management tool, verify "Show Today view in Lock screen" is unchecked. Alternatively, verify the text "<key>allowLockScreenTodayView</key><false/>" appears in the configuration profile (.mobileconfig file). On the Apple iOS device: 1. Open the Settings app. 2. Tap "General". 3. Tap "Profiles" or "Profiles & Device Management" or "Device Management". 4. Tap the Configuration Profile from the iOS management tool containing the management policy. 5. Verify "Today view on lock screen not allowed" is present. If the "Show Today view in Lock screen" is checked in the Apple iOS management tool, "<key>allowLockScreenTodayView</key><true/>" appears in the configuration profile, or the restrictions policy on the Apple iOS device from the Apple iOS management tool does not list "Today view on lock screen not allowed", this is a finding.

Fix Text

Install a configuration profile to disable Notification Center from the device Lock screen.

Additional Identifiers

Rule ID: SV-86423r1_rule

Vulnerability ID: V-71799

Group Title:

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000062	The organization permits actions to be performed without identification and authentication only to the extent necessary to accomplish mission/business objectives.
CCI-000366	The organization implements the security configuration settings.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
CM-6	Configuration Settings