Insecure Despite Proven Updated: Extracting the Root VCEK Seed on EPYC Milan Via a Software-Only Attack

In the official whitepaper of Secure Encrypted Virtualization with Secure Nested Paging SEV-SNP, AMD explicitly emphasizes the capability to prevent Trusted Computing Base TCB rollback attacks. Cryptographically, this is realized by signing attestation reports with the Versioned Chip Endorsement...