CVE-2024-5836 / CVE-2024-6778 : Chromium Sandbox Escape via Extension Exploits

This repository contains proof of concept exploits for CVE-2024-5836 and CVE-2024-6778, which are vulnerabilities within the Chromium web browser which allowed for a sandbox escape from a browser extension.

To run these, you must be on a version of Chromium older than 126.0.6478.54.

Write up

Bug report

Both the CVE-2024-5386 and CVE-2024-6778 directories contains a POC Chrome extension that is able to execute arbitrary JS on privileged WebUI pages. CVE-2024-5386 relies on a race condition and is fairly unreliable, while CVE-2024-6778 does not.

The sandbox-escape directory contains the full exploit chain, using CVE-2024-6778 to gain code execution in chrome://policy, which leads to a sandbox escape by setting the legacy browser support policies.

This repository is licensed under the MIT license.