CVE-2022-24790

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CVE-2022-24790

Summary: HTTP Request Smuggling in puma

Details: 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.

References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24790.json, https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/, https://nvd.nist.gov/vuln/detail/CVE-2022-24790, https://security.gentoo.org/glsa/202208-28, https://www.debian.org/security/2022/dsa-5146, https://github.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5, https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html