All news with #trusted execution environment tag

New hardware attack (TEE.fail) breaks modern secure enclaves

🔒 A new low-cost hardware-assisted attack called TEE.fail undermines current trusted execution environments from major chipmakers. The method inserts a tiny device between a memory module and the motherboard and requires a compromised OS kernel to extract secrets, defeating protections in Confidential Compute, SEV-SNP, and TDX/SDX. The attack completes in roughly three minutes and works against DDR5 memory, meaning the physical-access threats TEEs are designed to defend against are no longer reliably mitigated.

TEE.Fail breaks confidential computing on DDR5 CPUs

🔓 Academic researchers disclosed TEE.Fail, a DDR5 memory-bus interposition side-channel that can extract secrets from Trusted Execution Environments such as Intel SGX, Intel TDX, and AMD SEV-SNP. By inserting an inexpensive interposer between a DDR5 DIMM and the motherboard and recording command/address and data bursts, attackers can map deterministic AES-XTS ciphertexts to plaintext values and recover signing and cryptographic keys. The method requires physical access and kernel privileges but can be implemented for under $1,000; Intel, AMD and NVIDIA were notified and are developing mitigations.