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Autor Tema: MeltdownPrime / SpectrePrime nuevas variantes de Meltdown / Spectre  (Leído 458 veces)

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MeltdownPrime / SpectrePrime nuevas variantes de Meltdown / Spectre




Lejos de acabar este "culebrón" descubren nuevos variantes de Meltdown y Spectre:

MeltdownPrime y SpectrePrime

Investigadores de la Universidad de Princeton han descubierto las variantes que permitirían el acceso a información sensible de los usuarios de un ordenador usando una metodología distinta en el ataque.

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The SpectrePrime proof-of-concept exploit was successfully run on an Apple Macbook with a 2.4GHz Intel Core i7 processor running macOS Sierra, aka version 10.12.6. (Apple's Spectre patch arrived in macOS High Sierra 10.13.2.) MeltdownPrime has not yet been tested on real-world hardware.

The researchers suggest that while software fixes for the original flaws will also neuter variant attacks, hardware changes may not be adequate.

"Given our observations with mfence and lfence successfully mitigating Spectre and SpectrePrime in our experiments, we believe that any software techniques that mitigate Meltdown and Spectre will also be sufficient to mitigate MeltdownPrime and SpectrePrime," the paper concluded. "On the other hand, we believe that microarchitectural mitigation of our Prime variants will require new considerations." (..)

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« Última modificación: Noviembre 08, 2018, 19:59:59 pm por maripuri »
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