Battering RAM: DDR4 Interposer Breaks CPU Enclaves
🔓 Researchers at KU Leuven built a $50 DDR4 interposer that subverts confidential computing protections such as Intel SGX and AMD SEV, demonstrated at Black Hat Europe. The runtime attack, called Battering RAM, manipulates memory address mapping to gain arbitrary plaintext read/write and extract SGX provisioning keys, circumventing recent boot-time mitigations. The team warns that compromised memory modules in the supply chain could enable persistent backdoors on vulnerable cloud VMs.
