~/talk

Beginner’s Guide to Bypassing Modern Authentication Methods to SSO

Talkat RSA Conference 2024 · 2024-05-06..05-09· [security, web-platform]
name:Dor Segal
links:none on file
slides:none on file

Shows that FIDO/WebAuthn stops phishing but does not stop session replay inside SSO: using Fiddler TLS decryption plus a browser extension to steal cookies and by modifying network packets, the demo replays access and refresh tokens against Azure AD/PingFed, opens the Azure Management portal, and removes the victim’s security key. Proof-of-concept succeeds end-to-end. Proposed mitigations include token binding (dropped by Chrome, Edge-only support) and Microsoft’s preview token protection tied to TPM but currently limited in scope.

AI-written summary · about

  1. 0:00Modern auth bypass intro
  2. 2:55WebAuthn and FIDO2 explained
  3. 8:48Session cookie vulnerability
  4. 13:51SSO security limitations
  5. 18:10SSO token hijack in Azure
  6. 21:58Federated auth security risks
  7. 23:53Token binding solution
  8. 27:12Microsoft’s token protection
  9. 29:23Secure auth recommendations
  10. 31:11Q&A
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