CVE-2022-24790 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://github.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5 https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9 https://www.debian.org/security/2022/dsa-5146

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5