As part of a new discovery, a security researcher found an exploit dubbed Checkm8 (to be pronounced Checkmate), which can allow for permanent jailbreaking of iPhones, starting from the older iPhone 4s to the iPhone X.
Checkm8 Jailbreak Exploit
The new ‘unpatchable’ flaw has been discovered by a security researcher going by the name ‘Axi0mx’ on Twitter. It has also been publically announced on GitHub.
Checkm8 targets the bootrom, which means that the exploit is present in the first code that runs on an Apple device.
Since the bootrom code is read-only, fixing the flaw is next to impossible, be it via overwriting or through a software update.
EPIC JAILBREAK: Introducing checkm8 (read "checkmate"), a permanent unpatchable bootrom exploit for hundreds of millions of iOS devices.
Most generations of iPhones and iPads are vulnerable: from iPhone 4S (A5 chip) to iPhone 8 and iPhone X (A11 chip). https://t.co/dQJtXb78sG
— axi0mX (@axi0mX) September 27, 2019
The exploit works via USB, which means a person would need a computer to perform the exploit in the Apple devices. Furthermore, as per GitHub, users have been warned that the exploit could cause devices to brick.
What Devices Are Vulnerable?
As per the tweet by ‘Axi0mx’, Apple devices starting from the old iPhone 4S (with an A5 chipset) ..
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