WebKit, as used in Apple iOS before 8.4.1 and Safari before 6.2.8, 7.x before 7.1.8, and 8.x before 8.0.8, 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-2015-08-13-1 and APPLE-SA-2015-08-13-3.
https://support.apple.com/kb/HT205033
https://support.apple.com/kb/HT205030
https://support.apple.com/HT205221
http://www.securitytracker.com/id/1033274
http://www.securityfocus.com/bid/76338
http://lists.apple.com/archives/security-announce/2015/Sep/msg00003.html
http://lists.apple.com/archives/security-announce/2015/Aug/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Aug/msg00000.html