Assessing and Exploiting BigNum Vulnerabilities

Assessing and Exploiting BigNum Vulnerabilities

Black Hat via YouTube Direct link

Alternative property-based bug hunting

15 of 18

15 of 18

Alternative property-based bug hunting

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Assessing and Exploiting BigNum Vulnerabilities

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  1. 1 Intro
  2. 2 Outline
  3. 3 Motivation: break crypto, maybe?
  4. 4 Introduction to BigNum Arithmetic
  5. 5 Widely used implementations
  6. 6 Anatomy of CVE-2014-3570
  7. 7 OpenSSL's impact assessment (1/2)
  8. 8 Counterargument
  9. 9 GMP 5 mult bugs
  10. 10 The patch
  11. 11 Bug pattern: carry mispropagation
  12. 12 libgcrypt 1.6.0
  13. 13 Symbolic Execution Challenges
  14. 14 Galois' SAW
  15. 15 Alternative property-based bug hunting
  16. 16 Fuzzing
  17. 17 Conclusions
  18. 18 Bibliography

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