Tuesday, 23 April, 2019

IOS 11.4.1 brings USB Restricted Mode but it has a bug

Credit    Apple Credit Apple
Cecil Davis | 10 July, 2018, 11:20

At first we thought we would have to wait until iOS 12 this fall to see this feature, but here it is.

Apple released iOS 11.4.1, tvOS 11.4.1, and watchOS 4.3.2 today with minor bug fixes for its iPhones, iPads, HomePods, Apple TVs, and Apple Watches, but there was one surprise in the software: USB Restricted Mode, a feature created to block iPhone-cracking USB devices used by law enforcement agencies, has finally arrived. But while it's created to keep out hackers, it now has a bug that would render that feature nearly moot.

USB Restricted Mode was most likely designed in response to hackers like Grayshift developing tools and methods to break into iOS devices.

Apple also today released security updates for.

Recently, we've seen the emergence of a number of devices, including the GrayBox, that allow third parties to gather data from your iPhone or iPad through the Lightning port without having to unlock your device beforehand.

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Tap Face ID & Passcode or Touch ID & Passcode depending on your device. Security researchers are ElcomSoft report that USB Restricted Mode seems to have a bug that resets the one-hour countdown when you plug in a USB accessory. Not all accessories work but, for their tests, they used the $39 Lightning to USB 3 Camera Adapter dongle.

This is, of course, most likely just an oversight rather than a hidden (mis) feature.

The update includes a new feature called "USB Restricted Mode" that will disable a data connection from the iPhone's charging/data port at the bottom of the device after one hour of being locked by default.

If however someone does get to a phone within that hour period, they can shove in a USB accessory and prevent the smartphone from going into restricted mode until they have a chance to attach a cracking box later on.