| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1082382 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ruby-devise-two-factor (PTS) | stretch | 3.0.0-2 | vulnerable |
| bullseye | 3.1.0-2 | vulnerable |
| sid, bookworm | 4.0.2-1 | vulnerable |
The information below is based on the following data on fixed versions.
Notes
[bookworm] - ruby-devise-two-factor <ignored> (Minor issue)
[bullseye] - ruby-devise-two-factor <ignored> (Minor issue, requires dependencies to regenerate secrets)
https://github.com/devise-two-factor/devise-two-factor/security/advisories/GHSA-qjxf-mc72-wjr2