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AMD's SEV tech that protects cloud VMs from rogue servers may as well stand for Still Extremely Vulnerable

July 10, 2019 / Thomas Claburn

Five boffins from four US universities have explored AMD's Secure Encrypted Virtualization (SEV) technology – and found its defenses can be, in certain circumstances, bypassed with a bit of effort.In a paper [PDF] presented Tuesday at the ACM Asia Conference on Computer and Communications Security in Auckland, New Zealand, computer scientists Jan Werner (UNC Chapel Hill), Joshua Mason (University of Illinois), Manos Antonakakis (Georgia Tech), Michalis Polychronakis (Stony Brook University), and Fabian Monrose (UNC Chapel Hill) detail two novel attacks that can undo the privacy of protected processor enclaves.