| Name | CVE-2024-47889 |
| Description | Action Mailer is a framework for designing email service layers. Starting in version 3.0.0 and prior to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, and 7.2.1.1, there is a possible ReDoS vulnerability in the block_format helper in Action Mailer. Carefully crafted text can cause the block_format helper to take an unexpected amount of time, possibly resulting in a DoS vulnerability. All users running an affected release should either upgrade to versions 6.1.7.9, 7.0.8.5, 7.1.4.1, or 7.2.1.1 or apply the relevant patch immediately. As a workaround, users can avoid calling the `block_format` helper or upgrade to Ruby 3.2. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 requires Ruby 3.2 or greater so is unaffected. |
| 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 | 1085376 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| rails (PTS) | jessie, jessie (lts) | 2:4.1.8-1+deb8u9 | vulnerable |
| stretch (security), stretch (lts), stretch | 2:4.2.7.1-1+deb9u5 | vulnerable | |
| buster (security), buster, buster (lts) | 2:5.2.2.1+dfsg-1+deb10u5 | vulnerable | |
| bullseye (security), bullseye | 2:6.0.3.7+dfsg-2+deb11u2 | vulnerable | |
| bookworm | 2:6.1.7.3+dfsg-2~deb12u1 | vulnerable | |
| sid, trixie | 2:6.1.7.3+dfsg-4 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| rails | source | jessie | (unfixed) | end-of-life | ||
| rails | source | buster | (unfixed) | end-of-life | ||
| rails | source | (unstable) | (unfixed) | 1085376 |
https://github.com/rails/rails/security/advisories/GHSA-h47h-mwp9-c6q6
https://github.com/rails/rails/commit/be898cc996986decfe238341d96b2a6573b8fd2e (v7.2.1.1)
https://github.com/rails/rails/commit/3612e3eb3fbafed4f85e1c6ea4c7b6addbb0fdd3 (v7.1.4.1)
https://github.com/rails/rails/commit/0e5694f4d32544532d2301a9b4084eacb6986e94 (v7.0.8.5)
https://github.com/rails/rails/commit/985f1923fa62806ff676e41de67c3b4552131ab9 (v6.1.7.9)