A group of researchers from the Technical University of Darmstadt in Germany has found an exploit in iOS 15 with its new functionality that allows certain wireless chips to remain on even when the device is turned off.
This functionality can help locate the device as it is still able to send signals after shutting down, and hackers may take advantage of it.
The wireless chips that stay on for the app “Find My” to function include Bluetooth, NFC, and ultra-wideband chips maintained in a low-power mode (LPM) state.
In the group’s research paper titled ‘Evil Never Sleeps’ posted last week, they were able to install malware on the Bluetooth chip. Although the claim was mostly theoretical and no evidence yet surface if the kind of exploit has been in the wild.
Moreover, the researchers say that hackers would need to first jailbreak the iPhone before exploiting the Bluetooth chip that would give them access to other places to collect data.
Ultimately, researchers conclude that Apple’s implementation of the new functionality is for the security benefit of the users since it allows them to find a lost or stolen iPhone even when turned off, but it also poses a novelty threat.
“[Low-Power Mode] is a relevant attack surface that has to be considered by high-value targets such as journalists, or that can be weaponized to build wireless malware operating on shutdown iPhones,” the paper stated.
The researchers did disclose their findings to Apple, and the company is yet to have their feedback.
“It may be possible to exploit the Bluetooth chip directly and modify the firmware but the researchers did not do that and there isn’t a known exploit that would currently allow that,” security researcher Ryan Duff said in an online chat with Motherboard after their review of the research paper.
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rc yap says:
do we still jailbreak phones now?