CVE-2024-47889
Fixed in a distro release EPSS <1%CVSS 6.6
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.
Products: rails, rubyonrails rails
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| RubyGems | actionmailer | 6.1.7.9 |
| RubyGems | actionmailer | 7.0.8.5 |
| RubyGems | actionmailer | 7.1.4.1 |
| RubyGems | actionmailer | 7.2.1.1 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 11 | rails | 2:6.0.3.7+dfsg-2+deb11u3 |
| Debian 12 | rails | 2:6.1.7.10+dfsg-1~deb12u1 |
| Debian 13 | rails | 2:7.2.2.1+dfsg-1 |
| Debian 14 | rails | 2:7.2.2.1+dfsg-1 |
| SUSE Linux Enterprise High Availability Extension 15 SP2 | rubygem-actionmailer-5_1 | 5.1.4-150000.3.3.1 |
| SUSE Linux Enterprise High Availability Extension 15 SP3 | rubygem-actionmailer-5_1 | 5.1.4-150000.3.3.1 |
| SUSE Linux Enterprise High Availability Extension 15 SP4 | rubygem-actionmailer-5_1 | 5.1.4-150000.3.3.1 |
| SUSE Linux Enterprise High Availability Extension 15 SP5 | rubygem-actionmailer-5_1 | 5.1.4-150000.3.3.1 |
| Ubuntu 24.04 LTS | rails | no fix |
| Ubuntu 25.10 | rails | no fix |
| Ubuntu 26.04 LTS | rails | no fix |
| Ubuntu 26.10 | rails | no fix |
| Ubuntu Pro 16.04 LTS | rails | 2:4.2.6-1ubuntu0.1~esm1 |
| Ubuntu Pro 18.04 LTS | rails | 2:4.2.10-0ubuntu4+esm1 |
| Ubuntu Pro 20.04 LTS | rails | 2:5.2.3+dfsg-3ubuntu0.1~esm1 |
| Ubuntu Pro 22.04 LTS | rails | 2:6.1.4.1+dfsg-8ubuntu2+esm1 |
| openSUSE Tumbleweed | rubygem-actionmailer-7.0 | 7.0.8.6-1.3 |
| openSUSE Tumbleweed | rubygem-actionmailer-7.0 | 7.0.8.6-1.1 |
| openSUSE Tumbleweed | rubygem-rails-7.0 | 7.0.8.6-1.3 |
| openSUSE Tumbleweed | rubygem-rails-7.0 | 7.0.8.6-1.1 |