README.md

AMD Prefetch Attacks through Power and Time

This repository contains several experiments and proof-of-concepts for the AMD Prefetch Attacks through Power and Time paper. For more technical information, please refer to the paper:

• AMD Prefetch Attacks through Power and Time by Moritz Lipp, Daniel Gruss, Michael Schwarz

Prerequisites

The individual proof-of-concept implementations are self-contained and come with a Makefile and an individual description that explains how to build, run and interpret the proof-of-concept.

In order to run the proof-of-concepts, the following prerequisites need to be fulfilled:

• Linux installation
  • Build tools (gcc, make)
  • AMD energy driver (optional)
  • PTEditor
• AMD CPU

Throughout our experiments, we successfully evaluated our implementations on the following CPUs. However, most of the implementation should work on CPUs with the same microarchitecture.

CPU	Microcode	Microarchitecture
AMD Ryzen 5 2500 U	0x810100b	Zen
AMD Ryzen Threadripper 1920X	0x8001137	Zen
AMD Ryzen 5 3600	0x8701021	Zen 2
AMD Ryzen 7 3700X	0x8701021	Zen 2
AMD A10-7870K	0x6003106	Steamroller
AMD EPYC 7402P	0x830104d	Zen
AMD EPYC 7571	0x800126c	Zen

Proof-of-Concepts

The follow tables give an overview of all artifacts provided in this repository. Each folder contains an additional description explaining how to build, run and interpret the artifact.

Leakage Analysis Primitives

Name	Description
Page Table Level
TLB State
Stalling
Retirement

Case Studies

Name	Description
KASLR Break	Kernel Address Space Derandomization using Energy Consumption or the Execution Time of the prefetch instruction
Leaking Kernel Memory with Spectre	Combination of TLB-Evict+Prefetch and a Spectre Gadget to leak kernel memory