Apple has released a new version of its iTunes software, patching an enormous number of vulnerabilities in the popular music application. Version 10.5 of iTunes includes fixes for several dozen flaws in WebKit alone, and also has some updated functionality designed to support new components coming in iOS in the near future. Several of the WebKit flaws could lead to remote code execution, while others only result in denial-of-service conditions or a crash of the iTunes software. Some of the flaws only are present on versions of the software running on Windows machines.
Source: https://threatpost.com/apple-fixes-nearly-80-bugs-itunes-105-101211/75740/