CVE-2022-23634
Information Exposure when using Puma with Rails
- State
- Published
- Severity
- 8.0 High
- Published
- Feb 11, 2022
- Updated
- Apr 23, 2025
- Reserved
- Jan 19, 2022
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.0 High | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N | GitHub_M |
Weaknesses
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Affected Products
| Product | Versions |
|---|---|
pumapuma |
|
References
- https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5h
- https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bb
- https://github.com/advisories/GHSA-rmj8-8hhh-gv5h
- https://github.com/advisories/GHSA-wh98-p28r-vrc9
- https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_medium=email&utm_source=footer&pli=1
- DSA-5146vendor-advisory
- [debian-lts-announce] 20220525 [SECURITY] [DLA 3023-1] puma security updatemailing-list
- GLSA-202208-28vendor-advisory
- [debian-lts-announce] 20220827 [SECURITY] [DLA 3083-1] puma security updatemailing-list
- FEDORA-2022-de968d1b6cvendor-advisory
- FEDORA-2022-52d0032596vendor-advisory
- FEDORA-2022-7c8b29195fvendor-advisory
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