A new research has yielded yet another means to pilfer sensitive data by exploiting what’s the first “on-chip, cross-core” side-channel attack targeting the ring interconnect used in Intel Coffee Lake and Skylake processors. Researchers reverse-engineered the interconnect’s protocols to uncover the conditions for two or more processes to cause a ring contention, in turn using them to build a covert channel with a capacity of 4.18 Mbps. Intel categorized the attacks as a “traditional side channel,” which refers to a class of oracle attacks that typically take advantage of the differences in execution timing to infer secrets.
Source: https://thehackernews.com/2021/03/malware-can-exploit-new-flaw-in-intel.html