Which systems are affected by Meltdown? Earlier this month, computer security expects dropped a bombshell on the internet.
We usually only find out when something bad happens, like when some patches bricked AMD systems.. The operating system is windows server 2012 R2, ie. older than Windows 10 and thus slows down more due to kernel calls. Technically, the microcode update we’re talking about here protects against Spectre Variant 2, “Branch Target Injection.” They changed that stance recently, quietly releasing their … There are patches against Meltdown for Linux (KPTI (formerly KAISER)), Windows, and OS X. Ever since the Meltdown and Spectre exploits were exposed, Microsoft has been working overtime to patch Windows against them.
The first generation of Spectre and Meltdown patches were temporary solutions. Unfortunately, they were quite secretive about their Spectre and Meltdown patch list and schedule. Because of the difficulty in addressing Spectre… To answer your question, one of the servers I administer I have both Meltdown and Spectre patches disabled (even though the bios/microcode updates have been applied). Spectre and Meltdown were disclosed at the same time, so this can be a bit confusing.
The original Windows patch protected against the Meltdown attack, but required a CPU microcode update from Intel to fully protect against Spectre.
Spectre and Meltdown are design flaws in modern processors … The onus should not fall on consumers to enable the vulnerability blocking patches, let alone have to decide on the trade-off between kernel-level security issues and CPU performance hits. Oracle is the latest firm to patch its systems against the Spectre and Meltdown CPU flaws. There is also work to harden software against future exploitation of Spectre, respectively to patch software after exploitation through Spectre (LLVM patch, MSVC, ARM speculation barrier header). It is simply unfair, let alone wholly unethical. However the Windows patch only addressed Meltdown, and by now you’ve no doubt become familiar of the second vulnerability called Spectre. Re: spectre and meltdown patch verification... Sureshkumar M Jan 12, 2018 3:36 AM ( in response to matthewmagbee ) from my understanding , based on the available articles it is still not clear if the fix for (CVE-2017-5753) is released or not. On January 3, 2018, Microsoft released an advisory and security updates related to a newly-discovered class of hardware vulnerabilities (known as Spectre and Meltdown) involving speculative execution side channels that affect AMD, ARM, and Intel processors to varying degrees. Spectre and Meltdown explained: New variants and more efficient patches Watch Now The now-infamous Spectre and Meltdown vulnerabilities were first disclosed on January 4, 2018. Meltdown is easier to patch against than Spectre, due to Spectre-related attacks exploiting a fundamental design choice in modern processors. Meltdown and Spectre patches: Where to start and what to expect You need to apply Meltdown and Spectre patches to pretty much everything in your enterprise.
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