At this point, Apple has locked iOS down enough that a full jailbreak—unlocking a device to install whatever you want on it—of current releases is extremely rare. When such a capability does exist, it's usually kept quiet and sold for millions of dollars by exploit brokers. But now, thanks to an apparent Apple gaffe, the latest version of iOS can be jailbroken at this very moment. There's even code to do it on Github.
As first reported by Motherboard, researchers discovered over the weekend that in its recent iOS 12.4 release, Apple had accidentally rolled back a patch that fixed a bug from iOS 12.3. As a result, it's possible to exploit the vulnerability to jailbreak iOS 12.4, making it the first current-version iOS jailbreak to be publicly disclosed in years.
"It’s really a surprise to see," says Will Strafach, a longtime iOS jailbreaker and founder of Sudo Security Group. "It's been so long since an up-to-date firmware could be jailbroken. But now that Apple knows, it won’t be for long. I expect an update within a few days." Apple did not return a request from WIRED for comment.
Jailbreaking allows iOS users to add apps and other functions that Apple wouldn't normally permit to their iPhones. iOS has rigid limitations that are at least partly meant to protect users from malicious apps, but that also preserve Apple's control over the ecosystem. As a result, jailbreaking erodes some system protections, but it also allows users to break free from Apple's constraints.
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