Best of 2021

The blog posts Hacker News loved most in 2021. 5,820 posts.

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Escaping VirtualBox 6.1: Part 1

This post is about a VirtualBox escape for the latest currently available version (VirtualBox 6.1.16 on Windows). The vulnerabilities were discovered and exploited by our team Sauercl0ud as part of the RealWorld CTF 2020/2021. The vulnerability was known to the organizers, requires the guest to be able to insert…