CVE-2022-23634
Description
Puma is a Ruby/Rack web server built for parallelism. Prior to `puma` version `5.6.2`, `puma` may not always call `close` on the response body. Rails, prior to version `7.0.2.2`, depended on the response body being closed in order for its `CurrentAttributes` implementation to work correctly. The combination of these two behaviors (Puma not closing the body + Rails' Executor implementation) causes information leakage. This problem is fixed in Puma versions 5.6.2 and 4.3.11. This problem is fixed in Rails versions 7.02.2, 6.1.4.6, 6.0.4.6, and 5.2.6.2. Upgrading to a patched Rails _or_ Puma version fixes the vulnerability.
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 | | |
| rocky | 8 | fixed | |
| 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-rmj8-8hhh-gv5h
- https://www.suse.com/security/cve/CVE-2022-23634.html
- https://errata.rockylinux.org/RLSA-2022:5498
- https://nvd.nist.gov/vuln/detail/CVE-2022-23634
- https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb
- https://github.com/advisories/GHSA-rmj8-8hhh-gv5h
- https://github.com/advisories/GHSA-wh98-p28r-vrc9
- https://github.com/puma/puma
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2022-23634.yml
- https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1
- https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
- 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://security.gentoo.org/glsa/202208-28
- https://www.debian.org/security/2022/dsa-5146
- https://security-tracker.debian.org/tracker/CVE-2022-23634
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.