Bookwyrm versions 0.4.3 and below suffer from an authentication bypass vulnerability due to a lack of rate limiting on OTP checks.
01182b49f5094c1c536e28a7cca127e1933e717f4d3a739892d462bc0afce375# Exploit Title: Bookwyrm v0.4.3 - Authentication Bypass
# Date: 2022-08-4
# Exploit Author: Akshay Ravi
# Vendor Homepage: https://github.com/bookwyrm-social/bookwyrm
# Software Link: https://github.com/bookwyrm-social/bookwyrm/releases/tag/v0.4.3
# Version: <= 4.0.3
# Tested on: MacOS Monterey
# CVE: CVE-2022-2651
# Original Report Link: https://huntr.dev/bounties/428eee94-f1a0-45d0-9e25-318641115550/
Description: Email Verification Bypass Leads To Account Takeover in bookwyrm-social/bookwyrm v0.4.3 Due To Lack Of Ratelimit Protection
# Steps to reproduce:
1. Create a acount with victims email id
2. When the account is created, its ask for email confirmation via validating OTP
Endpoint: https://site/confirm-email
3. Enter any random OTP and try to perfrom bruteforce attack and if otp matches, We can takeover that account