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WiFuzz - Detecting and Exploiting Logical Flaws in the Wi-Fi Cryptographic Handshake

Black Hat via YouTube

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This talk presents a model-based method for detecting logical flaws in Wi-Fi cryptographic handshake implementations. It examines downgrade and denial-of-service vulnerabilities and demonstrates a client man-in-the-middle attack against OpenBSD.

Syllabus

Intro
How secure is the Wi-Fi handshake?
Background: the Wi-Fi handshake
Wi-Fi handshake simplified
Frame Layouts
How to test implementations?
Modelbased testing our approach
Test generation rules
Missing downgrade checks
Windows 7 targeted Dos
Broadcom downgrade
OpenBSD: client man-in-the-middle

Taught by

Black Hat

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