Apple Safari allows web sites to set cookies for country-specific top-level domains, such as co.uk and com.au, which could allow remote attackers to perform a session fixation attack and hijack a user's HTTP session, aka "Cross-Site Cooking," a related issue to CVE-2004-0746, CVE-2004-0866, and CVE-2004-0867.
https://exchange.xforce.ibmcloud.com/vulnerabilities/43839
http://www.vupen.com/english/advisories/2008/3444
http://www.us-cert.gov/cas/techalerts/TA08-350A.html
http://www.securitytracker.com/id?1020539
http://www.securityfocus.com/bid/30192
http://support.apple.com/kb/HT3338
http://secunia.com/advisories/31128
http://lists.apple.com/archives/security-announce//2008//Dec/msg00000.html
http://kuza55.blogspot.com/2008/07/some-random-safari-notes.html