Episode 69: Johan Carlsson - 3 Month Check-in on Full-time Bug Bounty.

Critical Thinking - Bug Bounty Podcast

Episode 69: In this episode of Critical Thinking - Bug Bounty Podcast we’re joined by Johan Carlsson to hear about some updates on his bug hunting journey. We deep-dive a CSP bypass he found in GitHub, a critical he found in GitLab's pipeline, and also talk through his approach to using script gadgets and adapting to highly CSP'd environments. Then we talk about his transition to full-time bug hunting, including the goals he’s set, the successes and challenges, and his current focus on specific bug types like ReDoS and OAuth, and the serendipitous nature of bug hunting.

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Today’s Guest:

https://twitter.com/joaxcar

https://joaxcar.com/blog/

Resources

Github CSP Bypass

https://gist.github.com/joaxcar/6e5a0a34127704f4ea9449f6ce3369fc

CSP Validator

https://cspvalidator.org/

Cross Window Forgery

https://www.paulosyibelo.com/2024/02/cross-window-forgery-web-attack-vector.html

Gitlab Crit

https://gist.github.com/joaxcar/9419b2df8778f26e9b02a741a8ec12f8

Timestamps

(00:00:00) Introduction

(00:09:34) Github CSP Bypass

(00:38:48) Script Gadgets and growth through Gitlab

(00:53:53) Gitlab pipeline bug

(01:12:32) Full-time Bug Bounty