The attack stems from a glitch in WebKit, an HTML layout browser engine in Apple’s Safari browser.
A newly-revealed proof-of-concept attack can cause iOS devices to crash or restart with a mere 15 lines of code, a researcher disclosed over the weekend.
On Saturday, researcher Sabri Haddouche, a security researcher at Wire, tweeted the source code of the proof-of-concept (PoC) attack that he said restarts iOS devices – such as the iPhone or iPad – with just a few lines of specially crafted Cascading Style Sheets (CSS) and HTML code.