CRLF injection vulnerability in WebKit in Apple Safari before 6.0 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP request splitting attacks via a crafted web site that leverages improper WebSockets URI handling.
http://www.securityfocus.com/bid/54700
http://support.apple.com/kb/HT5503
http://support.apple.com/kb/HT5400
http://lists.apple.com/archives/security-announce/2012/Sep/msg00003.html
http://lists.apple.com/archives/security-announce/2012/Jul/msg00000.html