Apple on Monday released a large security update for Mac OS X that fixes dozens of vulnerabilities and provides protection against potential attacks exploiting a weakness in the protocol used to verify that a domain is legitimate.

There are 43 specific issues addressed in the 2009-006 update, released the same day as Mac OS X v.10.6.2.

It plugs a variety of holes for the Mac OS X v10.5.8, 10.6, 10.6.1, and Mac OS X Server v10.6 and 10.6.1, many of which could lead to arbitrary code execution...