New security feature in iOS 11.4.1 "USB Restricted Mode" is easy to "fool"



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Following the launch of iPhone hacking solutions such as Greyshift and Celebrite, Apple has promised to launch an iOS feature to prevent this type of attack on its devices. The USB restricted mode capability has been tested for a long time, but is now available in a final version of the operating system. Unfortunately, he is suffering from a vulnerability that may be repaired in a new version of iOS 11, or just in the fall with the release of iOS 12.

Restricted Mode USB in iOS coincided with version 11.4.1, which also solved the problem of censorship for some of the users who closed applications when using emoji with the Taiwanese flag. This could be the latest version of iOS 11, because in about two months, Apple will launch iOS 12 with its new range of iPhone devices

This feature can be turned on or off as desired on the Touch ID / Face ID & Passcode "and is listed under" USB Accessories. "By default, this works, and to turn it off, the button should be in the" on "position, marked in green. is disabled, after one hour when the phone has not been used or unlocked with a password, fingerprint, or face recognition, access to the Lightning port is restricted for transfer of data or accessories Only loading can be done in this mode

When the switch is in the "on" position, connection of accessories and data transfer are possible at any time, whether the device is locked or not. me with this feature is, for the moment, rather seriously. If an accessory is connected at any time within 60 minutes after the last unlock, the timer is reset. In addition, if the accessory remains connected, the USB port remains unlocked. So, if authorities or other people with access to GreyKey or Celebrite unlocking devices get their hands on a device shortly after it is last used, simply plug in an accessory to get the proper protection. Apple. To test and demonstrate this vulnerability, ElcomSoft security researchers used a $ 40 adapter called Lightning to USB 3 Camera Adapter

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