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It sure sounds like it—have there been any responses from the major cloud providers? This doesn’t exactly seem like something that can be patched easily....

• xoa 7y ago
  >have there been any responses from the major cloud providers There does seem to recently have been an increase in having HSMs be part of cloud offerings, and while that's a good idea in general issues like this may be part of it too. One issue with this attack is that even in research conditions it seems to be pretty fundamentally slow. It took them 34 hours to do the setup phase and another 4 hours of reading, all going after a few kilobytes (.31 bits/s, accuracy rate of 82%). Which could still matter a lot when it comes to cryptographic keys since those are all small, but it's not clear is or ever could be feasible for sniffing significant amounts of confidential content data. It's more that if credentials can be harvested that'd be the steppingstone towards taking over. So if keys are just plain moved to a minimal blackbox outside the system entirely and on which no customer code of any kind runs, that seems like a real mitigation to this particular leak? I mean, even beyond any basic improvements to DRAM (or successors to DRAM, I wonder how some of the NVDRAM research like future gens of Optane handle this?).