Talk Title:

DramaQueen: Revisiting Side Channels in DRAM

Abstract:

Side channels are an old problem on CPU’s. Can we solve them once and for all? We protect our secure code by mapping it in non-cacheable memory; and so by bypassing side channel-sensitive buffers (data and code caches, branch predictor buffers, etc.) on CPU’s, even disabling SMT, making concurrent access to caches pointless, and concurrent access to certain micro-architectural buffers impossible. In this talk we present an exploitable side channel that remains in DRAM when bypassing buffers and caches on the CPU and present realistic key recovery results.

Speaker Bio:

Ben Gras has been an offensive security researcher for Intel Corporation for 5 years and has a PhD in systems security from the VU in Amsterdam.