SegScope

This repository contains the experiments of evaluation and case studies discussed in the paper

• "SegScope: Probing Fine-grained Interrupts via Architectural Footprints" (HPCA 2024).

SegScope can be used to probe interrupts without any timer. We successfully apply it to resurrect multiple end-to-end attacks in a timer-constrained scenario.

Tested Setup

Software dependencies

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

• Linux installation

  • Build tools (gcc, make)
  • Python 3

• Browsers (for website fingerprinting)

  • Chrome Browser or Tor Browser.
  • You also need to install the drivers for the browsers you would like to use.
  • Chrome: Download here and add chromedriver to your path
  • Tor Browser: Install tor-browser-selenium

Hardware dependencies

Throughout our experiments, we successfully evaluated our implementations on the following environments. We recommend to test SegScope on bare-metal machines.

Machine	CPU	Kernel
Xiaomi Air 13.3	Intel Core i5-8250U	Linux 5.15.0
Lenovo Yangtian 4900v	Intel Core i7-4790	Linux 5.8.0
Lenovo Savior Y9000P	Intel Core i9-12900H	Linux 5.15.0
Honor Magicbook 16 Pro	AMD Ryzen 7 5800H	Linux 5.15.0
Amazon t2.large (Xen)	Intel Xeon E5-2686	Linux 5.15.0
Amazon c5.large (KVM)	Intel Xeon 8275CL	Linux 5.15.0

Note: The enhanced Spectral attack relies on the UMONITOR/UMWAIT instructions that are only available on Intel latest core processors (Tremont and Alder Lake). We evaluate it on our Lenovo Savior Y9000P machine. Please refer to mwait for more details.

Materials

This repository contains the following materials:

• E1-Website Fingerprinting: contains the code that we apply SegScope to detect interrupts while opening a website.
• E2-Enhancing Spectral attack: contains the code that we use SegScope to enhance a non-interrupt side channel attack (i.e., spectral ).
• E3-Breaking KASLR: contains the code that we rely on SegScope-based timer to derandomize KASLR.

Contact

If there are questions regarding these experiments, please send an email to zhangxin00@stu.pku.edu.cn.

How should I cite this work?

Please use the following BibTeX entry:

@inproceedings{Zhang2024SegScope,
  year={2024},
  title={SegScope: Probing Fine-grained Interrupts via Architectural Footprints},
  booktitle={High Performance Computer Architecture},
  author={Xin Zhang and Zhi Zhang and Qingni Shen and Wenhao Wang and Yansong Gao and Zhuoxi Yang and Jiliang Zhang}
}