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Apple iOS must not allow screen capture.


Finding ID Version Rule ID IA Controls Severity
V-54245 AIOS-02-080001 SV-68491r1_rule Medium
By allowing the screen capture function, a user has the ability to capture a screen containing sensitive information and then transfer it to an application not authorized to store or process that type of information. For example, the unauthorized app may automatically perform cloud backup to non-DoD servers. If a screen capture containing sensitive information were copied to a location with inadequate protection, there would be a risk that an adversary could obtain it. Disabling the screen capture function will mitigate the risk of leaking sensitive information. SFR ID: FMT_SMF.1.1 #42
Apple iOS 8 Interim Security Configuration Guide 2014-09-16


Check Text ( C-54881r3_chk )
Review configuration settings to confirm “Allow screenshots” is disabled.

This check procedure is performed on both the iOS management tool and the iOS device.

Note: If an organization has multiple configuration profiles, then the check procedure must be performed on the relevant configuration profiles applicable to the scope of the review.

In the iOS management tool, verify "Allow screenshots" is unchecked.

Alternatively, verify the text "allowScreenShot " appears in the configuration profile (.mobileconfig file).

On the 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 restrictions policy.
5. Tap "Restrictions".
6. Verify "Screen capture not allowed" is listed.

If "Allow screenshots" is checked in the iOS management tool, "allowScreenShot " appears in the configuration profile, or the restrictions policy on the iOS device from the iOS management tool does not list "Screen capture not allowed", this is a finding.
Fix Text (F-59099r1_fix)
Install a Configuration Profile to disable the screen capture function.