Structural Trust Failures in Intel SGX/TDX, AMD SEV-SNP, and ARM TrustZone Attestation
A systemic structural failure has been identified in the Remote Attestation mechanisms of Intel SGX/TDX, AMD SEV-SNP, and ARM TrustZone. Research, including the TEEFail analysis, reveals a fundamental decoupling between hardware identity proofs (Attestation Quotes) and the secure communication channels (Attested TLS). This gap allows attackers to execute relay attacks, where a "Fake Enclave" can spoof the identity of a secure environment, misleading the client into believing the session is hardware-isolated. This vulnerability invalidates the core premise of Confidential Computing by breaking the cryptographic binding between the hardware root of trust and the transport layer, exposing encrypted memory enclaves to Man-in-the-Middle (MitM) exploitation.