June 17, 2021

iOS Update to Fix PDF Vulnerability

(LiveHacking.Com) — Apple is set to fix a vulnerability in the way that iOS handles PDF documents and so close the hole which enables users to jailbreak their devices by using the JailbreakMe website.

Users of JailbreakMe point their iOS device mobile-Safari browser to jailbreakme.com and the hack is performed remotely, unlike most other tools that require a software download on your computer, such as PwnageTool and redsn0w.

JailbreakMe is an “untethered” jailbreak, meaning the user does not need to have their device plugged in to their computer while rebooting in order to keep the hack. Users may notice a line of colored pixels or other graphical glitches when rebooting. That’s because once the JailbreakMe hack is installed, it overloads the device framebuffer (i.e. loads itself into video memory) on startup, injecting jailbreak code early in the startup sequence. That graphical glitch is the jailbreak code itself!

Apple spokeswoman Trudy Millar says they are working on a fix. “Apple takes security very seriously. We’re aware of this reported issue and are developing a fix that will be available to customers in an upcoming software update.”

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