Spectre

meltdown spectre

meltdown  spectre
  1. What is meltdown and Spectre?
  2. Why are Spectre and meltdown so dangerous?
  3. Should I disable Spectre and meltdown?
  4. How the Spectre and meltdown hacks really worked?
  5. Has Spectre meltdown been fixed?
  6. Is AMD affected by meltdown or Spectre?
  7. Is meltdown a virus?
  8. How do I know if I have Spectre or meltdown?
  9. How do you stop the Spectre and meltdown?
  10. Is it safe to disable Spectre mitigations?
  11. Can Spectre and meltdown be exploited remotely?
  12. Do you wish to disable Spectre meltdown patches for performance?

What is meltdown and Spectre?

What are Spectre and Meltdown? In the most basic definition, Spectre is a vulnerability allowing for arbitrary locations in the allocated memory of a program to be read. Meltdown is a vulnerability allowing a process to read all memory in a given system.

Why are Spectre and meltdown so dangerous?

Spectre and Meltdown are alike in that neither is a true virus. Rather, they are vulnerabilities within the computer processor that are exploited to carry out an attack on a computer. What makes Spectre uniquely dangerous is its ability to cause permanent, physical damage to your computer.

Should I disable Spectre and meltdown?

Windows allows you to disable the Meltdown and Spectre protection after installing the patch, making your system vulnerable to these dangerous attacks but eliminating the performance penalty that comes with the fix. WARNING: We strongly recommend against doing this.

How the Spectre and meltdown hacks really worked?

Meltdown, Spectre, and their variants all follow the same pattern. First, they trigger speculation to execute code desired by the attacker. This code reads secret data without permission. Then, the attacks communicate the secret using Flush and Reload or a similar side channel.

Has Spectre meltdown been fixed?

The patch process since January 2018 has been nothing short of boggling. ... Then at the end of January, Microsoft also announced that the Spectre and Meltdown patches for Windows 10 were compromising performance and causing random fatal errors, confirming that their security fixes were buggy.

Is AMD affected by meltdown or Spectre?

AMD's CPUs, including the latest Ryzen and Epyc processors, are immune to: Meltdown (Spectre v3)

Is meltdown a virus?

Meltdown is a hardware vulnerability affecting Intel x86 microprocessors, IBM POWER processors, and some ARM-based microprocessors. ... Meltdown was issued a Common Vulnerabilities and Exposures ID of CVE- 2017-5754, also known as Rogue Data Cache Load (RDCL), in January 2018.

How do I know if I have Spectre or meltdown?

Here's how to check if you already have the patch for other popular operating systems: iPhones and iPads: Head to Settings > General > Software Update to check the current version of iOS you have installed. If you have at least iOS 11.2, you are protected against Meltdown and Spectre.

How do you stop the Spectre and meltdown?

How to protect your PC against Meltdown and Spectre CPU flaws

  1. Update your operating system.
  2. Check for firmware updates.
  3. Update your browser.
  4. Update other software.
  5. Keep your antivirus active.

Is it safe to disable Spectre mitigations?

It's not really "safe", but it's not awful either. Your chances of getting attacked a pretty low.

Can Spectre and meltdown be exploited remotely?

With NetSpectre, the researchers detail a novel, albeit slow, approach to remotely exploiting Spectre on a vulnerable system. ... To date, though, all prior variants of Spectre and Meltdown have required an attacker to first get local access to a vulnerable system.

Do you wish to disable Spectre meltdown patches for performance?

Even if you don't want to disable your Meltdown patch (and probably will never install a bios to protect against Spectre), if you are overclocked you may want to retest for errors with Prime95. ... Yes, disabling, or better yet, uninstalling these patches is a good way to increase performance.

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