» about 500 words
The problem, explains Eclypsium, is that a miscreant could rent a bare-metal server instance from a provider, then exploit a firmware-level vulnerability, such as one in UEFI or BMC code, to gain persistence on the machine, and the ability to covertly monitor every subsequent use of that server. In other words, injecting spyware into the server’s motherboard software, which runs below and out of sight of the host operating system and antivirus, so that future renters of the box will be secretly snooped on.
Indeed, the researchers found they could acquire, in the Softlayer cloud, a bare-metal server, modify the underlying BMC firmware, release the box for someone else to use, and then, by tracking the hardware serial number, wait to re-provision server to see if their firmware change was still intact. And it was. BMC is the Baseband Management Controller, the remote-controllable janitor of a server that has full access to the system.
A contact at Intel spoke rather openly that AWS was consuming about 50% of all Intel CPUs. Ignoring what this means for Intel’s business prospects, consider that it means that AWS is effectively the dominant server ~~manufacturer~~designer. And, now that they’re building their own components, they’re the biggest developer of drivers for server hardware. » about 400 words
One of my takeaways from AWS’ bare metal announcements at re:Invent this week is that the compute, storage, and network aspects of hardware virtualization are now optimized and accelerated in hardware. AWS has moved beyond the limitations that constrained VM performance, and the work they’ve done applies both to their bare metal hardware and their latest VM instance types.» about 900 words