The Safari update also addresses Spectre risks. All compatible machines can download the supplemental update for free from the Mac App Store, and a Safari 11.0.2 update is available for Macs running OS X El Capitan 10.11.6 and macOS Sierra 10.12.6. I want to install R and RStudio on macOS High Sierra this way. Apple also previously addressed Meltdown in the first update of macOS High Sierra 10.13.2. He suggested several ways to mitigate Spectre 2 (Branch Target Injection) by upgrading to High Sierra and installing all software from source with the switch -mretpoline (already deployed in LLVM and GCC). It can be downloaded by navigating to Settings > General > Software Update.Ī supplemental update in macOS High Sierra 10.13.2 is available today that uses similar Safari work-arounds to address the Spectre vulnerability. iOS 11.2.2 is available for iPhone 5s and later, iPad Air and later, and iPod touch 6th generation. IOS 11.2.2 for iPhone and iPad contains security fixes that aren't fully fleshed out, but Apple does say that they affect Safari and Webkit to "mitigate the effects of Spectre." Apple claims the Meltdown vulnerability was addressed in iOS 11.2, and since there isn't a hardware fix for Spectre, the company issued this over-the-air update to all compatible devices. Further Reading “Meltdown” and “Spectre:” Every modern processor has unfixable security flaws
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