Episode 68: 0-days & HTMX-SS with Mathias Critical Thinking - Bug Bounty Podcast

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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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