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RE: Meltdown and Spectre Vulnerability #4
(01-04-2018, 10:35 AM)mothered Wrote:
(01-04-2018, 09:41 AM)ethics404 Wrote: This vulnerability makes it possible for a program running on a computer to break into an operating system’s central memory, tapping into data it is not meant to have access to.

I'd be Interested to see "exactly" what type of memory this refers to.

SRAM & DRAM are both volatile, meaning all data Is lost once the system Is powered down/rebooted.

These attacks work with the L1 cache lines and branch prediction, using out of bounds requests as part of a carefully crafted instruction sequence (where execution is reset due to a prediction failure), leaving the read data in the cache under user control. Reads this way are extremely slow (2kb/s), but could be useful in determining ASLR slides.

It is useful to note that AMD processors have virtually no risk.

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Meltdown and Spectre Vulnerability - by ethics404 - 01-04-2018, 09:41 AM
RE: Meltdown and Spectre Vulnerability - by phyrrus9 - 01-04-2018, 03:48 PM



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