The WebKit component in Safari in Apple iPhone OS before 3.1, and iPhone OS before 3.1.1 for iPod touch, does not remove usernames and passwords from URLs sent in Referer headers, which allows remote attackers to obtain sensitive information by reading Referer logs on a web server.
http://lists.apple.com/archives/security-announce/2009/Sep/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
http://secunia.com/advisories/36677
http://secunia.com/advisories/41856
http://secunia.com/advisories/43068
http://support.apple.com/kb/HT3860
http://www.mandriva.com/security/advisories?name=MDVSA-2011:039
http://www.securityfocus.com/bid/36339
http://www.ubuntu.com/usn/USN-1006-1
http://www.vupen.com/english/advisories/2010/2722
http://www.vupen.com/english/advisories/2011/0212