A Systematic Evaluation of OpenBSD's Mitigations

A Systematic Evaluation of OpenBSD's Mitigations

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Intro

1 of 19

1 of 19

Intro

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A Systematic Evaluation of OpenBSD's Mitigations

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  1. 1 Intro
  2. 2 OpenBSD?
  3. 3 Expectations
  4. 4 How do we measure exploit mitigations anyway?
  5. 5 Privilege separation and privilege drop
  6. 6 Example: rootless Xorg
  7. 7 Unveil
  8. 8 Hyperwhat?
  9. 9 Spectre v1, v2 and v3
  10. 10 AS(L)R
  11. 11 Position Independent Code/Executable
  12. 12 Libc/libcrypto symbols randomisation
  13. 13 Library order randomisation
  14. 14 Userland heap management
  15. 15 Rop gadgets removal, but why?
  16. 16 RETGUARD 2018
  17. 17 TCP SYN cookies
  18. 18 Development practices
  19. 19 Conclusion

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