CFNetwork in Apple iOS before 5.0.1 and Mac OS X 10.7 before 10.7.2 does not properly parse URLs, which allows remote attackers to trigger visits to unintended web sites, and transmission of cookies to unintended web sites, via a crafted (1) http or (2) https URL.
https://exchange.xforce.ibmcloud.com/vulnerabilities/70551
http://www.securityfocus.com/bid/50115
http://www.securityfocus.com/bid/50085
http://support.apple.com/kb/HT5130
http://support.apple.com/kb/HT5052
http://support.apple.com/kb/HT5002
http://support.apple.com/kb/HT4999
http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
http://lists.apple.com/archives/Security-announce/2011/Nov/msg00001.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html