Tinfoil Devise-two-factor before 2.0.0 does not strictly follow section 5.2 of RFC 6238 and does not burn a successfully validated one-time password (aka OTP), which allows remote or physically proximate attackers with a target users login credentials to log in as said user by obtaining the OTP through performing a man-in-the-middle attack between the provider and verifier, or shoulder surfing, and replaying the OTP in the current time-step.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Devise-two-factor | Tinfoilsecurity | * | 1.1.0 |