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This video is an explanation of bug bounty report submitted by 17-years-old Robert Chen and 14-years-old Phillip on Hackerone to Github’s private bug bounty program. The vulnerability was CRLF combined with XSS and cache poisoning that allowed reading private pages. It was paid out $35,000.
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Report:
https://robertchen.cc/blog/2021/04/03/github-pages-xss
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Timestamps:
00:00 Intro
00:24 What is BBRE newsletter?
01:10 Github Pages auth flow
02:33 XSS by CRLF
04:57 Bypassing Nonce and __Host cookie
08:44 Cache poisoning
09:49 Attacking from outside the org
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