The heart of the problem, according to Purviance, is a misnomer inSkype application that allows access to a user’s local file system. The sandbox within IOS neutralizes much of this flaw, but the book remains vulnerable.
Skype does not seem to be in any hurry to resolve the problem. In a tweet, Purviance has made it known that he had informed Skype of the problem on August 24 and was told that an update would be releasedin early September to close the loophole.
You can watch a demonstration of exactly how the exploit works in this video created by Purviance: