Cross-site scripting (XSS) vulnerability in Safari in Apple iOS before 5 allows remote web servers to inject arbitrary web script or HTML via a file accompanied by a "Content-Disposition: attachment" HTTP header.
https://exchange.xforce.ibmcloud.com/vulnerabilities/70558
http://support.apple.com/kb/HT5400
http://support.apple.com/kb/HT4999
http://seclists.org/fulldisclosure/2014/Jul/158
http://lists.apple.com/archives/security-announce/2012/Jul/msg00000.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html