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CVE-2024-47889 — Possible ReDoS vulnerability in actionmailer —...

MEDIUM

Possible ReDoS vulnerability in block_format in Action Mailer

Published October 15, 2024Updated January 7, 2025Source: osv

Summary

There is a possible ReDoS vulnerability in the block_format helper in Action Mailer. This vulnerability has been assigned the CVE identifier CVE-2024-47889. Impact ------ 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 or apply the relevant patch immediately. 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. Releases -------- The fixed releases are available at the normal locations. Workarounds ----------- Users can avoid calling the `block_format` helper or upgrade to Ruby 3.2 Credits ------- Thanks to yuki_osaki for the report!

Advisory Timeline

  • First published October 15, 2024 (726 days ago).
  • Last revised January 7, 2025 — 84 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update actionmailer to 7.0.8.5 or later
gem install actionmailer -v 7.0.8.5
Bundler
Update actionmailer to 6.1.7.9 or later
gem install actionmailer -v 6.1.7.9
Bundler
Update actionmailer to 7.1.4.1 or later
gem install actionmailer -v 7.1.4.1
Bundler
Update actionmailer to 7.2.1.1 or later
gem install actionmailer -v 7.2.1.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (4)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
actionmailer
rubygems
7.0.0, 7.0.1, 7.0.2, 7.0.2.1 (+20 more)7.0.8.5
actionmailer
rubygems
3.0.0, 3.0.1, 3.0.10, 3.0.10.rc1 (+357 more)6.1.7.9
actionmailer
rubygems
7.1.0, 7.1.1, 7.1.2, 7.1.3 (+5 more)7.1.4.1
actionmailer
rubygems
7.2.0, 7.2.17.2.1.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U

References

Frequently Asked Questions

What is CVE-2024-47889?
Possible ReDoS vulnerability in block_format in Action Mailer This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2024-47889?
CVE-2024-47889 affects actionmailer. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2024-47889 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-h47h-mwp9-c6q6
BIT-rails-2024-47889

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