A group of cybersecurity researchers have discovered a new security vulnerability affecting Intel processors, which they've craftily named "Plundervolt," a portmanteau of the words "plunder" and "undervolt." Chronicled under CVE-2019-11157, it was first reported to Intel in June 2019 under its security bug-bounty programme, so it could secretly develop a mitigation. With the 6-month NDA lapsing, the researchers released their findings to the public. Plundervolt is described by researchers as a way to compromise SGX (software guard extensions) protected memory by undervolting the processor when executing protected computations, to a level where SGX memory-encryption no longer protects data. The researchers have also published proof-of-concept code.
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