Nullcon Goa

Why So Quic! Racing And Fuzzing Http3 With Quicdraw Ui

36:51 · 28 Feb 2026 – 01 Mar 2026 · YouTube

About this talk

This talk focuses on HTTP/3 and the challenges in security tooling for it, particularly the lack of support for major interception proxies. Maor Abutbul from CyberArk Labs discusses how the common belief that QUIC's per-stream multiplexing prevents race conditions has been challenged. The session explores the development of QuicDraw, an open-source tool designed for fuzzing and race condition testing over HTTP/3. Key topics include HTTP/3's QUIC transport, how the QUIC-FIN sync technique can exploit multiplexing, and the functionality of QuicDraw and QuicDraw-UI, including their compatibility with existing browser and proxy workflows.

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Nullcon Goa

28 Feb 2026 – 01 Mar 2026

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