Researchers disclosed DDRop, a cheap hardware attack that silently drops memory writes to break confidentiality and integrity protections in Intel TDX, Intel Scalable SGX, and AMD SEV-SNP. By exploiting the lack of freshness checks in cloud confidential computing memory encryption, DDRop can enable memory tampering, attestation forgery, and other powerful attacks on protected virtual machines. #DDRop #IntelTDX #AMDSEVSNP #IntelScalableSGX #KULeuven #ETHZurich #DurhamUniversity #Google
Keypoints
- DDRop drops memory writes so servers keep reading stale encrypted data.
- The attack targets Intel TDX, Intel Scalable SGX, and AMD SEV-SNP.
- An attacker needs software control plus brief physical access to insert an interposer.
- DDRop can expose victim memory, toggle debug mode, and forge attestation on TDX.
- The researchers say the flaw is in hardware design and has no simple patch.
Read More: https://thehackernews.com/2026/09/new-ddrop-attack-breaks-intel-tdx-and.html