CVE-2021-43177
MEDIUM
5.3
CVSS Score
Published: April 11, 2022 at 07:37 PM UTC
Updated: June 17, 2026 at 04:10 AM UTC
2 products affected across 2 vendorsDevise Two FactorDevise Two Factor
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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.9%
Description
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)
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 4.0.2
Affected range stops below 4.0.2, so it looks safe — our inference, not a vendor statement
v < 4.0.2
Affected range stops below 4.0.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/tinfoil/devise-two-factor/security/advisories/GHSA-jm35-h8q2-73mpCVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-254NVD-CWE-noinfo
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