https://sydneygoo.weebly.com/tiacol-mac-os.html. Intel has detailed today that four new exploits named ZombieLoad make almost every chip it has made since 2011 vulnerable to attacks. ZombieLoad has some similarities to the Meltdown and Spectre bugs we saw last year. Apple has already patched the vulnerabilities with yesterday's macOS 10.14.5 update.
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Resource to help educate Mac users about security issues. Contains historical as well as timely security updates. Another Mac security blog. This often includes more in-depth analysis of specific threats. Not strictly security-specific but it contains jailbreaking information which has security. As much as Apple and friends might give the illusion that Macs are invincible from meltdown, they are PCs just like any other Windows machine. Of course, the rate of failure is much lower because.
As reported by TechCrunch, security researchers have discovered what they are calling a new class of vulnerabilities in Intel chips going back to 2011 and can also be used against virtual machines. As described by CPU.fail, here's how the attack works: https://trainer-strategy-shanghaislots-deuces-rwj-wild.peatix.com.
The ZombieLoad attack resurrects your private browsing-history and other sensitive data. It allows to leak information from other applications, the operating system, virtual machines in the cloud and trusted execution environments.
Like Spectre and Meltdown, ZombieLoad attacks leverage weaknesses in speculative execution and some of the same security researchers who discovered Meltdown and Spectre reported the new ZombieLoad vulnerabilities to Intel.
'ZombieLoad,' as it's called, is a side-channel attack targeting Intel chips, allowing hackers to effectively exploit design flaws rather than injecting malicious code. Intel said ZombieLoad is made up of four bugs, which the researchers reported to the chip maker just a month ago. Etap 12 crack free download.
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One of the researchers, Daniel Gruss, told TC that these are advanced attacks, sitting in difficulty between Spectre and Meltdown to execute.
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These are far from drive-by exploits where an attacker can take over your computer in an instant. Gruss said it was 'easier than Spectre' but 'more difficult than Meltdown' to exploit — and both required a specific set of skills and effort to use in an attack.
https://helionautwgzufmacsoft-wxos.peatix.com. There haven't been any publicly known examples of ZombieLoad being used maliciously, but it's still a good idea to update your Mac's software. Parslo mac os. Intel already released microcode updates and Apple has implemented them in yesterday's macOS 10.14.5 update. Apple also has High Sierra and Sierra security updates for ZombieLoad as well.
Intel did say that performance may take a minor hit of up 3%, but that most users won't notice any changes with the patches installed. Datacenters, on the other hand, could see performance drop as much as 9%.
Read more about ZombieLoad in TechCrunch's post here.
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Security researchers have recently uncovered security issues known by two names, Meltdown and Spectre. These issues apply to all modern processors and affect nearly all computing devices and operating systems. All Mac systems and iOS devices are affected, but there are no known exploits impacting customers at the time of this writing. Since exploiting many of these issues requires a malicious app to be loaded on your Mac or iOS device, we recommend downloading software only from trusted sources such as the App Store.
Apple has already released mitigations in iOS 11.2, macOS 10.13.2, and tvOS 11.2 to help defend against Meltdown. Security updates for macOS Sierra and OS X El Capitan also include mitigations for Meltdown. To help defend against Spectre, Apple has released mitigations in iOS 11.2.2, the macOS High Sierra 10.13.2 Supplemental Update, and Safari 11.0.2 for macOS Sierra and OS X El Capitan. Apple Watch is not affected by either Meltdown or Spectre.
We continue to develop and test further mitigations for these issues.
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Background
The Meltdown and Spectre issues take advantage of a modern CPU performance feature called speculative execution. Speculative execution improves speed by operating on multiple instructions at once—possibly in a different order than when they entered the CPU. To increase performance, the CPU predicts which path of a branch is most likely to be taken, and will speculatively continue execution down that path even before the branch is completed. If the prediction was wrong, this speculative execution is rolled back in a way that is intended to be invisible to software.
The Meltdown and Spectre exploitation techniques abuse speculative execution to access privileged memory—including that of the kernel—from a less-privileged user process such as a malicious app running on a device.
Meltdown
Meltdown is a name given to an exploitation technique known as CVE-2017-5754 or 'rogue data cache load.' The Meltdown technique can enable a user process to read kernel memory. Our analysis suggests that it has the most potential to be exploited. Apple released mitigations for Meltdown in iOS 11.2, macOS 10.13.2, and tvOS 11.2, and also in Security Update 2018-001 for macOS Sierra and Security Update 2018-001 for OS X El Capitan. watchOS did not require mitigation.
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Our testing with public benchmarks has shown that the changes in the December 2017 updates resulted in no measurable reduction in the performance of macOS and iOS as measured by the GeekBench 4 benchmark, or in common Web browsing benchmarks such as Speedometer, JetStream, and ARES-6.
Spectre
Spectre is a name covering multiple different exploitation techniques, including—at the time of this writing—CVE-2017-5753 or 'bounds check bypass,' and CVE-2017-5715 or 'branch target injection,' and CVE-2018-3639 or 'speculative bounds bypass.' These techniques potentially make items in kernel memory available to user processes by taking advantage of a delay in the time it may take the CPU to check the validity of a memory access call.
Analysis of these techniques revealed that while they are extremely difficult to exploit, even by an app running locally on a Mac or iOS device, they can be potentially exploited in JavaScript running in a web browser. On January 8th Apple released updates for Safari on macOS and iOS to mitigate such timing-based techniques. Testing performed when the Safari mitigations were released indicated that the mitigations had no measurable impact on the Speedometer and ARES-6 tests and an impact of less than 2.5% on the JetStream benchmark. We continue to develop and test further mitigations within the operating system for the Spectre techniques. watchOS is unaffected by Spectre.
