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PMFault: Faulting and Bricking Server CPUs through Management Interfaces. (arXiv:2301.05538v1 [cs.CR])
cs.CR updates on arXiv.org arxiv.org
Apart from the actual CPU, modern server motherboards contain other auxiliary
components, for example voltage regulators for power management. Those are
connected to the CPU and the separate Baseboard Management Controller (BMC) via
the I2C-based PMBus.
In this paper, using the case study of the widely used Supermicro X11SSL
motherboard, we show how remotely exploitable software weaknesses in the BMC
(or other processors with PMBus access) can be used to access the PMBus and
then perform hardware-based fault injection attacks …
access baseboard management controller bmc bricking case cpu cpus management motherboard power processors regulators server software study supermicro