GHSA-x489-jjwm-52g7

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GHSA-x489-jjwm-52g7

Summary: Tinfoil Devise-two-factor does not "burn" a successfully validated one-time password (OTP)

Details: Tinfoil Devise-two-factor before 2.0.0 does not strictly follow [RFC 6238 § 5.2 ](https://datatracker.ietf.org/doc/html/rfc6238#section-5.2) and does not "burn" a successfully validated one-time password (aka OTP), which allows physically proximate attackers with a target user's 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.

References: https://nvd.nist.gov/vuln/detail/CVE-2015-7225, https://github.com/tinfoil/devise-two-factor/issues/45#issuecomment-139335608, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798466, https://github.com/advisories/GHSA-x489-jjwm-52g7, https://github.com/rubysec/ruby-advisory-db/blob/master/gems/devise-two-factor/CVE-2015-7225.yml, https://github.com/tinfoil/devise-two-factor, https://github.com/tinfoil/devise-two-factor/blob/master/UPGRADING.md, https://web.archive.org/web/20210122192452/https://www.securityfocus.com/bid/76789, http://www.openwall.com/lists/oss-security/2015/06/20/4, http://www.openwall.com/lists/oss-security/2015/09/06/2, http://www.openwall.com/lists/oss-security/2015/09/17/2