WebKit, as used in Apple Safari before 6.1.5 and 7.x before 7.0.5, 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-2014-06-30-1.
Apple Security Advisory 2014-06-30-1 - Safari 6.1.5 and Safari 7.0.5 are now available and address spoofing and possible code execution vulnerabilities.