How to bypass a 2FA with a HTTP header
Hi everyone and welcome back on this new write-up. Today, I would like to talk about a vulnerability I found on some programs that allowed me to bypass their 2FA protections. On a side note, due to the fact that the programs are private, all the informations about the websites will be redacted. That’s said, let’s start ! Introduction: As many hunters, when I start my research on a new bug bounty program, I use the application as a lambda user. This allow me to understand how the applications work and notice which features can be interesting to test. I noticed that the applications had a 2FA feature, I enabled it and I started to play with it. For those who are not familiar with the concept of 2FA (Two-factor authentication), this can be defined by: Two-factor authentication ( 2FA ) is a way to add additional security to your account. The first “factor” is your usual password that is standard for any account. The second “factor” is a verification code retrieved from an app o...
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