One Reason Why You Should Install macOS 10.13.5 RIGHT NOW…. A Critical Firmware Flaw Exists

When I install an update from Apple, I always read the security content document that Apple puts out to find out what was out there that was a security threat to me. In the case of macOS 10.13.5, the security document has this in it:


Available for: macOS High Sierra 10.13.4

Impact: A malicious application with root privileges may be able to modify the EFI flash memory region

Description: A device configuration issue was addressed with an updated configuration.

CVE-2018-4251: Maxim Goryachy and Mark Ermolov

Lovely. What this means is someone could write an app that could install something in the firmware of your Mac that would be persistent before the OS boots. Which means that getting rid of it would be difficult as erasing the hard drive and reinstalling the OS would not fix such an attack. Thus this makes installing this macOS update important for Mac users. Thus don’t delay the installation of this update as it will protect you in the long term.

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