The bug, which researcher Charlie Miller identified, can be exploited by an app to take actions on the device without the user s knowledge. The bug works on any iOS device running version 4.3 or later, he said, including iPads. Miller informed Apple of the bug on Oct. 14 and he expects the company to issue a fix for it in the near future, considering the seriousness of the vulnerability. The vulnerability isn t a jailbreak-style flaw, but is just as serious in its own way as it shows that right now, users can’t necessarily trust that every app they download from the App Store is completely legitimate.
Source: https://threatpost.com/new-ios-bug-lets-apps-run-unsigned-code-110711/75864/