If you cannot get to terms with this fact of computing life then perhaps you should give up computers altogether. However, I will point out that one could say all security measures are "half-hearted" in that they address an issue (or a group of them) when many others are either in the pipeline or about to be discovered. I shouldn't really reply to someone that joined in October 2017 only to post criticism (not a single positive post). Many PCs with Intel processors have been facing serious issues following the installation of patches with fixes for Meltdown and Spectre, but these problems do not appear to impact Apple's machines. The Spectre Safari mitigations have "no measurable impact" on Speedometer and ARES-6 tests, and an impact of less than 2.5% on the JetStream benchmark. These software workarounds can impact processor performance, but according to Apple, the Meltdown fix has no measurable performance reduction across several benchmarks.
As these use hardware-based flaws, operating system manufacturers are required to implement software workarounds. Spectre and Meltdown take advantage of the speculative execution mechanism of a CPU. Apple in early January confirmed that all of its Mac and iOS devices were impacted, but Meltdown mitigations were introduced ahead of when the vulnerabilities came to light in iOS 11.2 and macOS 10.13.2, and Spectre was addressed through Safari updates in iOS 11.2.2 and a macOS 10.13.2 Supplemental Update. Spectre and Meltdown are two hardware-based vulnerabilities that impact nearly all modern processors. Apple initially said a prior security update included fixes for the two older operating systems, but that information was later retracted. Along with macOS High Sierra 10.13.3, Apple this morning released two new security updates that are designed to address the Meltdown and Spectre vulnerabilities on machines that continue to run macOS Sierra and OS X El Capitan.Īs outlined in Apple's security support document, Security Update 2018-001 available for macOS Sierra 10.12.6 and OS X El Capitan 10.11.6 offers several mitigations for both Meltdown and Spectre, along with fixes for other security issues, and the updates should be installed immediately.Īpple addressed the Meltdown and Spectre vulnerabilities in macOS High Sierra with the release of macOS High Sierra 10.13.2, but older machines were left unprotected.
0 kommentar(er)
