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Fencer Vulns
critical 9.1

CVE-2022-24790 json

HTTP Request Smuggling in puma

published 2022-03-30 4 y ago modified 2026-06-17 4 mo ago also GHSA-h99w-9q5r-gjq9 , EUVD-2022-1439

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

Puma is a simple, fast, multi-threaded, parallel HTTP 1.1 server for Ruby/Rack applications. When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The vulnerability has been fixed in 5.6.4 and 4.3.12. Users are advised to upgrade as soon as possible. Workaround: when deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.

Patch / fix

  • rubygems puma 4.3.12, 5.6.4
  • puma puma 4.3.12, 5.6.4
  • puma Debian 14, Debian 13, Debian 12 5.6.4-1

debian advisories DEBIAN-CVE-2022-24790

  • puma Ubuntu Pro 20.04 LTS 3.12.4-1ubuntu2+esm1
  • puma Ubuntu Pro 22.04 LTS 5.5.2-2ubuntu2+esm1

ubuntu advisories UBUNTU-CVE-2022-24790

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

  • grafana storage 3.5 5.2.4-6.el7rhgs
  • rubygem-puma storage 3.5 4.3.12-1.el7rhgs
  • rubygem-rack storage 3.5 2.2.4-1.el7rhgs
  • rubygem-tzinfo storage 3.5 1.2.10-1.el7rhgs
  • tfm-rubygem-puma satellite 6.9 4.3.12-1.el7sat

red hat advisories RHSA-2023:1486RHSA-2022:8532

  • rubygem-puma SLE High Availability Extension 15 SP4, SLE High Availability Extension 15 SP3, SLE High Availability Extension 15 SP2 +4 more 4.3.12-150000.3.9.1
  • grafana OpenStack Cloud Crowbar 9, OpenStack Cloud 9 6.7.4-3.29.1
  • rubygem-puma OpenStack Cloud Crowbar 9 2.16.0-4.18.1
  • ardana-ansible OpenStack Cloud 9 9.0+git.1660748476.c118d23-3.32.1
  • ardana-cobbler OpenStack Cloud 9 9.0+git.1660747489.119efcd-3.19.1
  • ardana-tempest OpenStack Cloud 9 9.0+git.1651855288.a2341ad-3.22.1
  • openstack-nova OpenStack Cloud Crowbar 9, OpenStack Cloud 9 18.3.1~dev92-3.43.1
  • python-Django1 OpenStack Cloud Crowbar 9, OpenStack Cloud 9 1.11.29-3.40.1

suse advisories SUSE-SU-2022:3571-1SUSE-SU-2022:3339-1SUSE-SU-2022:3338-1

  • rubygem-puma-4 openSUSE Tumbleweed 4.3.12-1.1
  • rubygem-puma-5 openSUSE Tumbleweed 5.6.5-1.1
  • ruby3.2-rubygem-puma-5 openSUSE Tumbleweed 5.6.5-1.7
  • rubygem-puma-5 openSUSE Tumbleweed 5.6.8-1.1

opensuse advisories openSUSE-SU-2024:12032-1openSUSE-SU-2024:12592-1openSUSE-SU-2024:13166-1openSUSE-SU-2024:13721-1

  • ruby-puma Arch Linux 5.6.4-1

arch linux advisories AVG-2764

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-2022-24790 updated cvss 7.5

puma-5.6.4: http request smuggling vulnerabilities

  • Red Hat CloudForms Management Engine 5 rubygem-puma
    affected: no fix planned “Will not fix”
  • Red Hat Satellite 6 tfm-rubygem-puma-plugin-systemd
    affected: no fix available
  • Red Hat Gluster 3.5 Web Administration on RHEL-7 rubygem-puma 4.3.12-1.el7rhgs
    fixed: vendor fix RHSA-2023:1486
  • Red Hat Satellite 6.9 tfm-rubygem-puma 4.3.12-1.el7sat
    fixed: vendor fix RHSA-2022:8532
  • Red Hat Gluster 3.5 Web Administration on RHEL-7 ruby 2.4.9-94.el7rhgs, grafana 5.2.4-6.el7rhgs, ruby-irb 2.4.9-94.el7rhgs, ruby-libs 2.4.9-94.el7rhgs, rubygem-i18n 1.9.1-1.el7rhgs, rubygem-rack 2.2.4-1.el7rhgs, +28 more Red Hat Satellite 6.9 satellite 6.9.10-1.el7sat, satellite-cli 6.9.10-1.el7sat, satellite-common 6.9.10-1.el7sat, satellite-capsule 6.9.10-1.el7sat, satellite-debug-tools 6.9.10-1.el7sat, tfm-rubygem-katello 3.18.1.55-1.el7sat, +3 more Red Hat Satellite Capsule 6.9 satellite 6.9.10-1.el7sat, satellite-cli 6.9.10-1.el7sat, satellite-common 6.9.10-1.el7sat, satellite-capsule 6.9.10-1.el7sat, satellite-debug-tools 6.9.10-1.el7sat
    not affected: vulnerable code not present

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
total
Assessed
18 mo ago

Exploit prediction

2.19% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N
GitHub 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem package affected fixed in
rubygems puma
>=5.0.0, <5.6.4
<4.3.12
5.6.4
4.3.12

Affected products

  • puma puma

Classification

Weakness
  • CWE-444 Inconsistent Interpretation of HTTP Requests

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.