What is a Browser Security Sandbox?! (Learn to Hack Firefox)

It's surprisingly easy to do security research on Firefox trying to find sandbox escapes. You should give it a try!

Long video version (stream Q&A): https://www.youtube.com/watch?v=VEaoDFdq95g

The Original Article: https://blog.mozilla.org/attack-and-defense/2021/04/27/examining-javascript-inter-process-communication-in-firefox/
Fuzzing IPC: https://blog.mozilla.org/attack-and-defense/2021/01/27/effectively-fuzzing-the-ipc-layer-in-firefox/
Mozilla Bug Bounty: https://www.mozilla.org/en-US/security/client-bug-bounty/

00:00 - Intro
01:44 - What is a Process Sandbox?
03:04 - How to Implement a Sandbox?
03:43 - Introducing Inter Process Communication (IPC)
05:17 - Why Browsers Need a Complex Sandbox Architecture
07:19 - Browser Exploitation requires Sandbox Escape
08:42 - Strategy 1: OS Sandbox Implementation Bypass
08:59 - Strategy 2: Attacking the IPC Implementation Layer
09:48 - Strategy 3: IPC Logic Bugs
10:10 - HTML/JS Components in Firefox
11:21 - IPC Messages Implemented in JavaScript
11:58 - Setting Up Firefox Nightly For Debugging
13:20 - alert() IPC Message Handler
14:04 - IPC Message Sender
15:21 - Send Malicious IPC Messages
16:12 - CVE-2019-11708 Prompt:Open Sandbox Escape
17:13 - Outro

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Видео What is a Browser Security Sandbox?! (Learn to Hack Firefox) канала LiveOverflow