CVE-2021-43177

low-risk

Published 2022-04-11

As a result of an incomplete fix for CVE-2015-7225, in versions of devise-two-factor prior to 4.0.2 it is possible to reuse a One-Time-Password (OTP) for one (and only one) immediately trailing interval. CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N)

Do I need to act?

0.39% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.3/10 Medium

NETWORK / HIGH complexity

Affected Products (1)

Devise-Two-Factor

Affected Vendors

Tinfoilsecurity

References (2)

Third Party Advisory https://github.com/tinfoil/devise-two-factor/security/advisories/GHSA-jm35-h8q2-...

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low-risk

Severity 17/34 · Moderate

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal