What is an OS x system patch? What's the use?

Apple said it had learned of the "Shellshock vulnerability" of the recent bash software and was stepping up the launch of an OS to fix the vulnerability

x System patches. because bash is a UNIX-based OS

The X system uses shell scripts, so the "Shellshock" vulnerability affects a wide range of UNIX based systems and most Linux systems.

A spokesman for Apple said the recent exposure of the Bash software vulnerability to most OS X users is currently not a threat, bash is a Unix command-line script shell, used in many Linux systems and unix-based systems-including OS X. Security experts say hackers can take advantage of the "Shellshock" vulnerability in bash to fully control the target system. In an OS X system, the vulnerability would normally not affect the average user, or have an impact on advanced users who need to use Bash to modify advanced UNIX services. We are quickly and vigorously introducing security patches to fix this vulnerability.

If you are an OS X senior user, there is a need to use these services that are exposed to shellshock vulnerabilities. You'd better shut down these services for the time being, wait for Apple to release the patch, or you can fix the holes for bash by xcode yourself.