Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Puma | Puma | < 4.3.11 |
| Rubyonrails | Rails | >= 5.0.0, < 5.2.6.2 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 35 |
Related Weaknesses (CWE)
References
- https://github.com/advisories/GHSA-rmj8-8hhh-gv5hThird Party Advisory
- https://github.com/advisories/GHSA-wh98-p28r-vrc9MitigationNot ApplicableThird Party Advisory
- https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bbPatchThird Party Advisory
- https://github.com/puma/puma/security/advisories/GHSA-rmj8-8hhh-gv5hPatchThird Party Advisory
- https://groups.google.com/g/ruby-security-ann/c/FkTM-_7zSNA/m/K2RiMJBlBAAJ?utm_mMailing ListMitigationPatch
- https://lists.debian.org/debian-lts-announce/2022/05/msg00034.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/08/msg00015.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202208-28Third Party Advisory
- https://www.debian.org/security/2022/dsa-5146Third Party Advisory
- https://github.com/advisories/GHSA-rmj8-8hhh-gv5hThird Party Advisory
- https://github.com/advisories/GHSA-wh98-p28r-vrc9MitigationNot ApplicableThird Party Advisory
- https://github.com/puma/puma/commit/b70f451fe8abc0cff192c065d549778452e155bbPatchThird Party Advisory
FAQ
What is CVE-2022-23634?
CVE-2022-23634 is a vulnerability with a CVSS score of 8.0 (HIGH). 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 respo...
How severe is CVE-2022-23634?
CVE-2022-23634 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-23634?
Check the references section above for vendor advisories and patch information. Affected products include: Puma Puma, Rubyonrails Rails, Debian Debian Linux, Fedoraproject Fedora.