Intel processors with SGX (shared resource isolation): MULTI-TENANT ISOLATION: Improper isolation of shared

Impact

MULTI-TENANT ISOLATION: Improper isolation of shared microarchitectural resources lets a privileged user extract information from SGX enclaves. Another TCB-recovery event for anyone selling enclave-backed confidentiality.

Who can reach it

Privileged local access on the host.

What to do

Microcode update and re-attestation. Late-loadable microcode plus reboot; no OEM BIOS strictly required for the microcode component.

References