Apple Releases Security Update for macOS Sierra and El Capitan to Address Meltdown

Earlier today, Apple released the newest version of macOS High Sierra to the public, which also included further security patches to address the Spectre and Meltdown hardware vulnerabilities.

Now, Apple has also released a software update for macOS Sierra 10.12.6 and El Capitan 10.11.6. In both cases, the new security update is available through the Mac App Store. Simply navigate to the Updates tab in the digital storefront and find the necessary update to the desktop operating system. Follow the onscreen instructions to download and install the updated software.

Apple is listing the new patch as Security Update 2018-001. You can check out the full breakdown of the update through the source link below.

Here’s the description from Apple:

Available for: macOS Sierra 10.12.6, OS X El Capitan 10.11.6

    Impact: An application may be able to read kernel memory (Meltdown)

    Description: Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache.

In addition to further patching Spectre and Meltdown, the new security update also includes fixes for a variety of other issues, including fixes for the kernel that are related to a “malicious application may be able to execute arbitrary code with kernel privileges,” among other things.

The new software for both macOS Sierra and El Capitan is available now. It can be downloaded from the Mac App Store as a free software update for each platform.

Are you still running macOS Sierra or El Capitan?

[via Apple]

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