Description
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 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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://github.com/tinfoil/devise-two-factor/blob/master/UPGRADING.md ↗
- http://www.openwall.com/lists/oss-security/2015/09/17/2 ↗
- http://www.openwall.com/lists/oss-security/2015/06/20/4 ↗
- http://www.securityfocus.com/bid/76789 ↗
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798466 ↗
- https://github.com/tinfoil/devise-two-factor/issues/45#issuecomment-139335608 ↗