CVE-2015-7225

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.

• CWE-254

• http://www.openwall.com/lists/oss-security/2015/06/20/4Mailing List, VDB Entry
• http://www.openwall.com/lists/oss-security/2015/09/17/2Mailing List, VDB Entry
• http://www.securityfocus.com/bid/76789Third Party Advisory, VDB Entry
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798466Mailing List, Third Party Advisory
• https://github.com/tinfoil/devise-two-factor/blob/master/UPGRADING.mdThird Party Advisory
• https://github.com/tinfoil/devise-two-factor/issues/45#issuecomment-139335608Third Party Advisory
• http://www.openwall.com/lists/oss-security/2015/06/20/4Mailing List, VDB Entry
• http://www.openwall.com/lists/oss-security/2015/09/17/2Mailing List, VDB Entry
• http://www.securityfocus.com/bid/76789Third Party Advisory, VDB Entry
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798466Mailing List, Third Party Advisory
• https://github.com/tinfoil/devise-two-factor/blob/master/UPGRADING.mdThird Party Advisory
• https://github.com/tinfoil/devise-two-factor/issues/45#issuecomment-139335608Third Party Advisory

Published

Sep 6, 2017

Last Modified

Jun 17, 2026

Status

Modified

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