by Kastro
Paper/Archive/CVE-2022-24790

CVE-2022-24790

puma puma — HTTP Request Smuggling in puma

EPSS 2%CVSS 9.1
critical.is priorityof 100
44
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 82.4.824 × 2016.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
puma< 4.3.12–CNA
puma>= 5.0.0, < 5.6.4–CNA

Scores by source

GitHub_M (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9refgithub.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5advisorydebian.org/security/2022/dsa-5146advisorysecurity.gentoo.org/glsa/202208-28reflists.debian.org/debian-lts-announce/2022/08/msg00015.htmladvisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIBadvisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43Gadvisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5