CVE-2022-24790
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 5.6.4-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 5.6.4-1 |
| debian | bullseye | fixed | 4.3.8-1+deb11u2 |
| debian | forky | fixed | 5.6.4-1 |
| debian | sid | fixed | 5.6.4-1 |
| debian | trixie | fixed | 5.6.4-1 |
References
- https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9
- https://www.suse.com/security/cve/CVE-2022-24790.html
- https://nvd.nist.gov/vuln/detail/CVE-2022-24790
- https://github.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5
- https://github.com/puma/puma
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2022-24790.yml
- https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB
- https://portswigger.net/web-security/request-smuggling
- https://security.gentoo.org/glsa/202208-28
- https://www.debian.org/security/2022/dsa-5146
- https://security-tracker.debian.org/tracker/CVE-2022-24790
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.