CVE-2024-47889

Publication date 16 October 2024

Last updated 25 February 2025

Ubuntu priority

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
rails	24.10 oracular	Needs evaluation
	24.04 LTS noble	Needs evaluation
	22.04 LTS jammy	Fixed 2:6.1.4.1+dfsg-8ubuntu2+esm1 Ubuntu Pro
	20.04 LTS focal	Fixed 2:5.2.3+dfsg-3ubuntu0.1~esm1 Ubuntu Pro
	18.04 LTS bionic	Fixed 2:4.2.10-0ubuntu4+esm1 Ubuntu Pro
	16.04 LTS xenial	Fixed 2:4.2.6-1ubuntu0.1~esm1 Ubuntu Pro

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Notes

seth-arnold

In Oneiric-Saucy, rails package is just for transition; The rails package contains actual code from vivid onward

References

Related Ubuntu Security Notices (USN)