Use-after-free vulnerability in WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through 10.6 and Windows, Safari before 4.1 on Mac OS X 10.4, and Safari on Apple iPhone OS allows remote attackers to execute arbitrary code or cause a denial of service (application crash), or read the SMS database or other data, via vectors related to "attribute manipulation," as demonstrated by Vincenzo Iozzo and Ralf Philipp Weinmann during a Pwn2Own competition at CanSecWest 2010.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7037
http://www.vupen.com/english/advisories/2010/1512
http://www.vupen.com/english/advisories/2010/1373
http://www.securityfocus.com/bid/40620
http://twitter.com/thezdi/statuses/11001080021
http://support.apple.com/kb/HT4225
http://support.apple.com/kb/HT4220
http://support.apple.com/kb/HT4196
http://securitytracker.com/id?1024067
http://securityreason.com/securityalert/8128
http://secunia.com/advisories/40196
http://secunia.com/advisories/40105
http://news.cnet.com/8301-27080_3-20001126-245.html
http://lists.apple.com/archives/security-announce/2010/Jun/msg00003.html
http://lists.apple.com/archives/security-announce/2010/Jun/msg00000.html
http://lists.apple.com/archives/security-announce/2010//Jun/msg00002.html