HTTP/2 - The Sequel is Always Worse

HTTP/2 - The Sequel is Always Worse

Black Hat via YouTube Direct link

The tooling situation Existing tooling does not work

17 of 20

17 of 20

The tooling situation Existing tooling does not work

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HTTP/2 - The Sequel is Always Worse

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  1. 1 Intro
  2. 2 Outline
  3. 3 Request Smuggling via HTTP/2 downgrades
  4. 4 H2.TE Desync: URL token hijack
  5. 5 H2.TE Desync: Header hijack
  6. 6 H2.X via Request Splitting - Resp Queue Poisoning
  7. 7 H2.TE via request line injection
  8. 8 Possible attacks
  9. 9 No connection reuse
  10. 10 Tunnelling confirmation
  11. 11 Tunnel-vision Problem: Front-end reads Scontent-length bytes from back-end
  12. 12 Leaking internal headers via tunnelling
  13. 13 Cache poisoning via tunnelling
  14. 14 Ambiguous HTTP/2 requests
  15. 15 URL prefix injection
  16. 16 Header name splitting
  17. 17 The tooling situation Existing tooling does not work
  18. 18 Defence
  19. 19 References & further reading
  20. 20 Takeaways

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