The Sandbox Profiles subsystem in Apple iOS before 8.1.1 does not properly implement the debugserver sandbox, which allows attackers to bypass intended binary-execution restrictions via a crafted application that is run during a time period when debugging is not enabled.
http://lists.apple.com/archives/security-announce/2014/Nov/msg00000.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/98777
https://support.apple.com/en-us/HT204418