New Spectre Attack Recovers Data From a CPU’s Protected SMM Mode

18th May, 2018, By Catalin Cimpanu


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Security researchers from Eclypsium have detailed yesterday a new variation of the Spectre attack that can recover data stored inside a secure CPU area named the System Management Mode (SMM).


For those unfamiliar with CPU design, the SMM is a special x86 processor mode that not even highly-privileged software such as kernels or hypervisors cannot access or interrupt.


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