The exploit has been tested successfully on iOS 7 when running on the iPhone 4S, 5, 5C, and 5S, and the most recent iPad model.
Apple spokeswoman Trudy Muller said that the company was preparing a fix that it would deliver as an update to iOS 7 when it was ready.
But for now, if you already own an iPhone 5s or an iPhone 5c, you may be interested in downloading the iOS 7.0.1 update released on Friday, which contains "bug fixes and improvements." It is available via iTunes and wirelessly. According to users who have downloaded and installed it onto their new iPhones, the update patches a bug that prevented users from using the fingerprint scanner on the iPhone 5s to authenticate iTunes purchases, forcing them instead to go back to tapping in a passcode.
Meanwhile, a contest to crack the iPhone 5s' fingerprint scanner in in progress.
A micro venture capital firm joined a group of security researchers to offer more than $13,000 in cash along with other goodies to the first hacker who breaks the device in a contest promoted on the website istouchidhackedyet.com/.
Data used for verification is encrypted and stored in a secure enclave of the phone's A7 processor chip. No information is sent to any remote servers, including Apple's iCloud system.
It's common bugs disclosed by "white hats" to be patched by manufacturers, preventing criminal exploitation.