CRLF injection vulnerability in WebKit in Apple Safari before 4.0, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 allows remote attackers to inject HTTP headers and bypass the Same Origin Policy via a crafted HTML document, related to cross-site scripting (XSS) attacks that depend on communication with arbitrary web sites on the same server through use of XMLHttpRequest without a Host header.
lists.apple.com/archives/security-announce/2009/jun/msg00002.html
lists.apple.com/archives/security-announce/2009/Jun/msg00005.html
lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
osvdb.org/54992
secunia.com/advisories/35379
secunia.com/advisories/37746
secunia.com/advisories/43068
securitytracker.com/id?1022344
support.apple.com/kb/HT3613
support.apple.com/kb/HT3639
www.debian.org/security/2009/dsa-1950
www.securityfocus.com/bid/35260
www.vupen.com/english/advisories/2009/1522
www.vupen.com/english/advisories/2009/1621
www.vupen.com/english/advisories/2011/0212