CVE-2024-8796
Description
Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret shorter than the minimum to generate a multi-factor authentication code could make it easier for an attacker to guess the shared secret and generate valid TOTP codes.
Predictions
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 | affected | |
| debian | bullseye | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| RubyGems | devise-two-factor | !< 2.2.0||<>= 6.0.0 | >= 6.0.0 |
| RubyGems | devise-two-factor | >=4.0.0,<6.0.0 | 6.0.0 |
| RubyGems | devise-two-factor | | |
References
- https://github.com/devise-two-factor/devise-two-factor/security/advisories/GHSA-qjxf-mc72-wjr2
- https://nvd.nist.gov/vuln/detail/CVE-2024-8796
- https://github.com/devise-two-factor/devise-two-factor/commit/cc6f34423d9c6af9f3e02be478c3c40dc7462e19
- https://github.com/devise-two-factor/devise-two-factor
- https://security-tracker.debian.org/tracker/CVE-2024-8796
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.