HexBrain

Coinbase · Report #7369

2 factor authentication design flaw

Validstatus
2upvotes
6 Jun 2014disclosed

How it was found

Hello,

I keep getting redirected where to report this bug. Hopefully this will finally get the job done. I have attached a screenshot of the original bug report which can be found at https://coinbase.desk.com/customer/en/portal/private/cases/294281

Here are a few excerpts from the report to summarize the bug:

"I have my settings set to require 2fa for sending any BTC from my account. However, if I send my BTC to a paper wallet, no 2fa is required. Doesn't that kind of defeat the point? [...] Given that this bug is significant enough to completely bypass one of your security features, I'm curious as to whether this would be eligible for the bounty."

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original