WebKit, as used in Apple iOS before 7, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2013-09-18-2.
lists.apple.com/archives/security-announce/2013/Oct/msg00003.html
lists.apple.com/archives/security-announce/2013/Oct/msg00009.html
lists.apple.com/archives/security-announce/2013/Sep/msg00006.html
secunia.com/advisories/54886
support.apple.com/kb/HT5934
support.apple.com/kb/HT6001
www.securitytracker.com/id/1029054