Title

Apple iOS must disable automatic transfer of diagnostic data to an external device other than an MDM service with which the device has enrolled. (Cat III impact)

Discussion

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 information about what DoD users are doing with the systems and what causes them to fail. An adversary embedded within the software development team or elsewhere could use the information acquired to breach mobile operating system security. Disabling automatic transfer of such information mitigates this risk. SFR ID: FMT_SMF_EXT.1.1#45

Check Content

Review configuration settings to confirm “Allow sending diagnostic and usage data to Apple” 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 sending diagnostic and usage data to Apple" is unchecked. Alternatively, verify the text "<key>allowDiagnosticSubmission</key><false/>" appears in the configuration profile (.mobileconfig file). On the iOS device: 1. Open the Settings application. 2. Tap "Privacy". 3. Tap "Diagnostics & Usage". 4. Verify that "Don't Send" is checked. Note: This setting also disables "Share With App Developers". If "Allow sending diagnostic and usage data to Apple" is checked in the iOS management tool, "<key>allowDiagnosticSubmission</key><true/>" appears in the configuration profile, or "Automatically Send" is checked on the iOS device, this is a finding.

Fix Text

Install a Configuration Profile to disable sending diagnostic data to an organization other than DoD.

Additional Identifiers

Rule ID:

Vulnerability ID: V-61907

Group Title:

Expert Comments

CCIs tied to check.

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