CVE-2022-24790

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 products

Alt Linux, Apache, Astra Linux, Caddy, Haproxy, Linuxmint, Nginx, Puma

Puma

< 4.3.12, 5.6.4

Fix

Available

CVSS 3.1

9.1 CRITICAL

EPSS

2.1% (80th percentile)

Weakness

CWE-444

NVD status

Modified

Published

2022-03-30

No exploit for CVE-2022-24790 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.