This is a fix for a serious security bug in iOS 6.0-6.1.5 and 7.0-7.0.5. If your device is on any of those iOS versions, please install this package. (iOS 6.1.6 and 7.0.6 already include this fix.)
This bug is known as CVE-2014-1266. For details, see ImperialViolet's analysis of the bug.
No options to configure.
Source code available on Github