The Assets subsystem in Apple iOS before 8 and Apple TV before 7 allows man-in-the-middle attackers to spoof a device’s update status via a crafted Last-Modified HTTP response header.
archives.neohapsis.com/archives/bugtraq/2014-09/0106.html
archives.neohapsis.com/archives/bugtraq/2014-09/0107.html
support.apple.com/kb/HT6441
support.apple.com/kb/HT6442
www.securityfocus.com/bid/69882
www.securityfocus.com/bid/69941
www.securitytracker.com/id/1030866
exchange.xforce.ibmcloud.com/vulnerabilities/96088