11/30/2023 0 Comments Intel to spectre meltdown chip flaw![]() ![]() Some analysts have warned that the threat is unique because it is an issue affecting hardware used in many computing systems. Researchers at Google showed how a hacker could exploit the flaw in many kinds of computer chips to get passwords, encryption codes and more, even though there have been no reports of any attacks using the vulnerability. The Intel chief executive promised speedy release of patches during his most high-profile public comments since the release of research highlighting vulnerabilities affecting the chips powering most modern PCs and many mobile devices. Krzanich said at the time that there was no information to suggest any loss of data from the Meltdown and Spectre flaws. "We have now identified the root cause of the reboot issue impacting Broadwell and Haswell platforms, and made good progress in developing a solution to address it," Shenoy said.Įarlier this month, Intel chief Brian Krzanich took the unusual step of addressing the security issue during a keynote ahead of the opening of the huge Consumer Electronics Show in Las Vegas. In the meantime, computer users were advised to be vigilante with security practices. ![]() He expected details on when updated patches might be released to be available later this week. Meltdown is largely specific to Intel processors, and affects all CPU models from the past few decades. There are in fact two major vulnerabilities here, now dubbed 'Meltdown' and 'Spectre'. "We ask that our industry partners focus efforts on testing early versions of the updated solution so we can accelerate its release." Update: An earlier version of this article stated that this flaw was specific to Intel chips, but that isn't the whole story. "They may introduce higher than expected reboots and other unpredictable system behavior," Intel data center group executive vice president Navin Shenoy said in an online post. The US chip giant recommended that computer makers, cloud service providers, system manufacturers, software venders, and end users stop deployment of current versions of the patch. Branch Target Injection is a technique for training branch predictors to speculatively execute certain instructions in order to infer data in the processor cache using a timing side-channel.Intel posted a list of chip models that could be tripped up by the patch, meant to prevent hackers from taking advantage of so-called Meltdown and Spectre flaws to steal data. IBRS offers a defense against Spectre v2, which Intel calls Branch Target Injection. Shortly after The Register first reported on the scramble to fix the Meltdown and Spectre bugs, Intel published details about Indirect Branch Restricted Speculation ( IBRS), a mechanism to restrict speculation of indirect branches, which tell processors to start executing instructions at a new location. Boffins release tool to decrypt Intel microcode. Spectre affects all modern processors, including those designed by Intel, AMD and ARM, but Meltdown is currently thought only to affect Intel chips manufactured since 1995, with the exception of.Apple gets lawsuit over Meltdown and Spectre dismissed Meltdown, a bug that could allow an attacker to read kernel memory (the protected core of an operating system), impacts Intel and Qualcomm processors, and one type of ARM chip. Meltdown and Spectre were discovered by researchers from Google Project Zero and academic institutions around the world.Speculative execution is when the CPU guesses what code path will execute. Older AMD, Intel chips vulnerable to data-leaking 'Retbleed' Spectre variant Dubbed Meltdown, the flaw allowed a hacker to read information from applications' memory at the kernel level, a space deep down in the operating system that's core to the functioning of everything. Meltdown and Spectre exploit a bug in a behavior known as speculative execution.Linux kernel 6.0 debuts, Linus Torvalds teases 'core new things' coming in version 6.1.That's far from optimal in a cloud environment with shared hardware. Spectre v2 – the variant implicated in this particular vulnerability – relies on timing side-channels to measure the misprediction rates of indirect branch prediction in order to infer the contents of protected memory. Spectre affects AMD and ARM processors as well as Intel CPUs, which means mobile devices are also at risk. It's timing, however, that animates Spectre. Even new Intel chips like the Core i7-8700K are affected by Meltdown and Spectre. The moniker Spectre describes a set of vulnerabilities that abuse speculative execution, a processor performance optimization in which potential instructions are executed in advance to save time.
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