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It’s 2018, and just a few lines of code can crash and restart any iPhone or iPad and can cause a Mac computer to freeze.

Sabri Haddouche, a security researcher at encrypted instant messaging app Wire, revealed a proof-of-concept (PoC) web page containing an exploit that uses only a few lines of specially crafted CSS & HTML code.

Beyond just a simple crash, the web page, if visited, causes a full device kernel panic and an entire system reboot.

The Haddouche’s PoC exploits a weakness in Apple’s web rendering engine WebKit, which is used by all apps and web browsers running on the Apple’s operating system.

Since the Webkit issue failed to properly load multiple elements such as “div” tags inside a backdrop filter property in CSS, Haddouche created a web page that uses up all of the device’s resources, causing shut down and restart of the device due to kernel panic.

You can also watch the video demonstration published by the researcher, which shows the iPhone crash attack in action.

images from Hacker News