WebKit, as used in Apple iTunes before 11.0.3, allows man-in-the-middle attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via vectors related to iTunes Store browsing, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2013-05-16-1.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17407
http://support.apple.com/kb/HT5785
http://support.apple.com/kb/HT5766
http://lists.apple.com/archives/security-announce/2013/May/msg00000.html
http://lists.apple.com/archives/security-announce/2013/Jun/msg00001.html