CVE-2021-43177
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
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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)
Predictions
Exploit likelihood
30%
Patch ETA
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Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 4.0.2-1 |
| debian | bullseye | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| RubyGems | devise-two-factor | <>= 4.0.2 | >= 4.0.2 |
| RubyGems | devise-two-factor | <4.0.2 | 4.0.2 |
References
- https://github.com/tinfoil/devise-two-factor/security/advisories/GHSA-jm35-h8q2-73mp
- https://nvd.nist.gov/vuln/detail/CVE-2021-43177
- https://github.com/tinfoil/devise-two-factor/issues/106
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/devise-two-factor/CVE-2021-43177.yml
- https://github.com/tinfoil/devise-two-factor
- https://security-tracker.debian.org/tracker/CVE-2021-43177
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.