Description
A Host Header Injection vulnerability in the password reset component in levlaz braindump v0.4.14 allows remote attackers to conduct password reset poisoning and account takeover via manipulation of the Host header when Flask's url_for(_external=True) generates reset links without a fixed SERVER_NAME.
References
- https://portswigger.net/web-security/host-header/exploiting/password-reset-poisoning
- https://github.com/levlaz/braindump/blob/9640dd03f99851dbd34dd6cac98a747a4a591b01/app/auth/views.py#L131-L148
- https://github.com/levlaz/braindump/blob/9640dd03f99851dbd34dd6cac98a747a4a591b01/app/templates/auth/email/reset_password.html#L1-L8
- https://drive.google.com/file/d/1FmkctLdOTGMdy6GgLaTzfxemdVDeiA7J/view?usp=sharing
- https://gist.github.com/BrookeYangRui/94c3bee0c2cbc1ed81a21d4448550c21