Do you know this common Go vulnerability?

When auditing code it's crucial to know about common issues. In this video we explore a Go issue that I was not aware of. LEARN ON HEXTREE (ad) Learn hacking on Hextree: https://www.hextree.io/ Join the Hextree Discord: https://discord.gg/xgQpCQCpvy 38c3 CTF - Fajny Jagazyn Wartości Kluczy: https://2024.ctf.link/internal/challenge/fb03748d-7e94-4ca2-8998-a5e0ffcbd761/ Unintended solution: https://msanft.foo/blog/hxp-38c3-web-fajny-jagazyn/ Challenge author writeup: https://hxp.io/blog/114/hxp-38C3-CTF-Fajny-Jagazyn-Wartoci-Kluczy/ VSCode Go debugger client code: https://github.com/golang/vscode-go/blob/39786ea90f18ab98f75d091b9a04367d1b1df82c/extension/src/debugAdapter/goDebug.ts#L1557 CHAPTERS 00:00 - Intro 00:20 - Go gjson vs json behavior 01:33 - Overview CTF challenge "Fajny Jagazyn Wartości Kluczy" 04:33 - Weird server setup? 05:55 - Arbitrary file read 07:00 - /proc filesystem trick 08:01 - Unintended solution 09:14 - What was the intended solution? 12:58 - Exploiting Go race condition 13:58 - Outro SUPPORT Per video: https://www.patreon.com/join/liveoverflow Per month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join Buy my handwriting font (ad): https://shop.liveoverflow.com/ WATCH, FOLLOW & READ Second channel: https://www.youtube.com/LiveUnderflow Twitch: https://twitch.tv/LiveOverflow/ Twitter: https://twitter.com/LiveOverflow/ Instagram: https://instagram.com/LiveOverflow/ TikTok: https://www.tiktok.com/@liveoverflow_ LiveOverflow blog: https://liveoverflow.com/ Hextree blog (ad): https://www.hextree.io/blog #CTF #SecurityResearch #LiveOverflow (ad) LiveOverflow YouTube channel is supported by advertisement and product placement.