Skip to content
Fencer Vulns
medium 6.6

CVE-2024-47887 json

Action Controller has possible ReDoS vulnerability in HTTP Token authentication

published 2024-10-15 2 y ago modified 2026-06-17 4 mo ago also BIT-rails-2024-47887 , EUVD-2024-3142 , GHSA-vfg9-r3fq-jvx4

cvss
6.6
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

Action Pack is a framework for handling and responding to web requests. Starting in version 4.0.0 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 Action Controller's HTTP Token authentication. For applications using HTTP Token authentication via `authenticate_or_request_with_http_token` or similar, a carefully crafted header may cause header parsing 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. One may choose to use Ruby 3.2 as a workaround.Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected. Rails 8.0.0.beta1 depends on Ruby 3.2 or greater so is unaffected.

Patch / fix

  • rubygems actionpack 6.1.7.9, 7.0.8.5, 7.1.4.1, 7.2.1.1
  • bitnami rails 6.1.8, 7.0.9, 7.1.5, 7.2.2
  • rubyonrails rails 6.1.7.9, 7.0.8.5, 7.1.4.1, 7.2.1.1
  • rails Debian 12 2:6.1.7.10+dfsg-1~deb12u1
  • rails Debian 14, Debian 13 2:7.2.2.1+dfsg-1

debian advisories DEBIAN-CVE-2024-47887

  • rails Ubuntu Pro 16.04 LTS 2:4.2.6-1ubuntu0.1~esm1
  • rails Ubuntu Pro 18.04 LTS 2:4.2.10-0ubuntu4+esm1
  • rails Ubuntu Pro 20.04 LTS 2:5.2.3+dfsg-3ubuntu0.1~esm1
  • rails Ubuntu Pro 22.04 LTS 2:6.1.4.1+dfsg-8ubuntu2+esm1

ubuntu advisories UBUNTU-CVE-2024-47887

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • rubygem-actionpack-5_1 SLE High Availability Extension 15 SP6, SLE High Availability Extension 15 SP5, SLE High Availability Extension 15 SP4 +1 more 5.1.4-150000.3.32.1

suse advisories SUSE-SU-2024:3877-1

  • rubygem-actionpack-7.0 openSUSE Tumbleweed 7.0.8.6-1.3
  • rubygem-rails-7.0 openSUSE Tumbleweed 7.0.8.6-1.3
  • rubygem-rails-7.0 openSUSE Tumbleweed 7.0.8.6-1.1
  • rubygem-actionpack-7.0 openSUSE Tumbleweed 7.0.8.6-1.1

opensuse advisories openSUSE-SU-2025:15110-1openSUSE-SU-2025:15124-1openSUSE-SU-2024:14479-1openSUSE-SU-2024:14472-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-47887 updated cvss 3.7

rubygem-actionpack: Possible ReDoS vulnerability in HTTP Token authentication in Action Controller

  • Red Hat 3scale API Management Platform 2 3scale-amp2/system-rhel7 Red Hat Satellite 6 rubygem-actionpack
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.6 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
CNA 4.0 6.6 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
rubygems actionpack
>=4.0.0, <6.1.7.9
>=7.0.0, <7.0.8.5
>=7.1.0, <7.1.4.1
>=7.2.0, <7.2.1.1
6.1.7.9
7.0.8.5
7.1.4.1
7.2.1.1
bitnami rails
>=4.0.0, <6.1.8
>=7.0.0, <7.0.9
>=7.1.0, <7.1.5
>=7.2.0, <7.2.2
6.1.8
7.0.9
7.1.5
7.2.2

Affected products

  • rails rails
  • rubyonrails rails

Classification

Weakness
  • CWE-1333 Inefficient Regular Expression Complexity
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of rails/rails published their own advisory on GitHub. Reviewed sources take precedence over it.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.