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WIFI-Important Remote Attack Surface: Threat is Expanding

Talkat Black Hat Asia 2020 · 2020-09-29..10-02· [networking, security]
name:Ying Wan
links:none on file
links:none on file
name:Ye Zhang
links:none on file
slides:none on file

A black‑box fuzzer that mutates 802.11 management frames and information elements finds 18 zero-day vulnerabilities in six months by running three modes (AP, station, p2p) and sending frames via monitor mode and SDR or by queuing forged frames into the kernel. Notable, reproducible bugs include a supported rates/operational classes IE overflow that causes Windows BSODs in Intel drivers (AX200 and others) and multiple memory corruptions triggered during association; the root cause is unchecked IE lengths and malformed TLV combinations—proofs‑of‑concept and reversing are provided.

AI-written summary · about

  1. 0:00Start
  2. 0:44Overview
  3. 1:20Background
  4. 5:11Association Stage
  5. 5:35How Does the Mobile Device Access the Wireless Network
  6. 11:19Owner Ability Discovery Method
  7. 14:04How To Mutate a Mutated Management Frames during the Interaction
  8. 14:49Information Element Mutation
  9. 19:32The Stock Buffer Overflow in the Wi-Fi Driver of Usb Awareness Network Adapter on Windows
  10. 21:22Poc Demo
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