The Cloudflare mTLS vulnerability - A Deep Dive Analysis

Published: 06 April 2023
on channel: Hussein Nasser
9,140
244

Cloudflare released a blog detailing a vulnerability that has been in their system for nearly two years. it is related to mTLS or mutual TLS and specifically client certificate revocation. I explore this in details

0:00 Intro
3:00 The Vulnerability
7:00 What happened?
8:50 Certificate Revocation
12:30 Rejecting certain endpoints
17:00 Certificate Authentication
20:30 Certificate serial number
24:00 Session Resumption (PSK)
35:00 The bug
37:00 How they addressed the problem

https://blog.cloudflare.com/mtls-clie...


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