Heap-based buffer overflow in Apple Safari 7.0.2 allows remote attackers to execute arbitrary code and bypass a sandbox protection mechanism via unspecified vectors, as demonstrated by Liang Chen during a Pwn2Own competition at CanSecWest 2014.
archives.neohapsis.com/archives/bugtraq/2014-04/0009.html
archives.neohapsis.com/archives/bugtraq/2014-04/0135.html
archives.neohapsis.com/archives/bugtraq/2014-04/0136.html
www.pwn2own.com/2014/03/pwn2own-results-thursday-day-two/
support.apple.com/kb/HT6537
twitter.com/thezdi/statuses/444157530139136000