Apple today released updates for Safari 6.x and 7.x . The patches fix 7 vulnerabilities and are available for versions of OS X back to 10.7.5 (Lion). 
The bulletin released by Apple is very vague and only talks about "memory corruption issues" but states that some of these vulnerabilities may lead to arbitrary code execution. The vulnerabilities affect WebKit, Apple's browser library, and may affect other products as well.
With this update, the latest versions of Safari are 6.1.6 and 7.0.6.
 http://support.apple.com/kb/HT6367Intrusion Detection In-Depth - SIEM Summit & Training 2019
Aug 13th 2014
5 years ago