Episode 68: 0-days & HTMX-SS with Mathias
Critical Thinking - Bug Bounty Podcast25 Apr 2024

Episode 68: 0-days & HTMX-SS with Mathias

Episode 68: In this episode of Critical Thinking - Bug Bounty Podcast Mathias is back with some fresh HTMX research, including CSP bypass using HTMX triggers, converting client-side response header injection to XSS, bypassing HTMX disable, and the challenges of using HTMX in larger applications and the potential performance trade-offs. We also talk about the results of his recent CTF Challenge, and explore some more facets of CDN-CGI functionality.

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Shoutout to YTCracker for the awesome intro music!

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Today’s Guest:

https://twitter.com/avlidienbrunn

Resources:

Masato Kinugawa's research on Teams

https://speakerdeck.com/masatokinugawa/how-i-hacked-microsoft-teams-and-got-150000-dollars-in-pwn2own?slide=33

subdomain-only 307 open redirect

https://avlidienbrunn.se/cdn-cgi/image/onerror=redirect/http://anything.avlidienbrunn.se

Timestamps

(00:00:00) Introduction

(00:05:18) CSP Bypass using HTML

(00:14:00) Converting client-side response header injection to XSS

(00:23:10) Bypassing hx-disable

(00:32:37) XSS-ing impossible elements

(00:38:22) CTF challenge Recap and knowing there's a bug

(00:51:53) hx-on (depreciated)

(00:54:30) CDN-CGI Research discussion

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