puma: Puma is a Ruby/Rack web server built for parallelism
CVE-2022-23634 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2022-23634, released February 11, 2022. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libdb · rocky 8 | 0:5.3.28-42.el8_4 | RLSA-2022:5498 | Jul 5, 2022 |
| puma · Debian 12.15 (bookworm) | 5.6.4-1 | DEBIAN-CVE-2022-23634 | Feb 11, 2022 |
| puma · Debian 13.5 (trixie) | 5.6.4-1 | DEBIAN-CVE-2022-23634 | Feb 11, 2022 |
| puma · Debian 14 | 5.6.4-1 | DEBIAN-CVE-2022-23634 | Feb 11, 2022 |
| puma · Ubuntu 20.04 LTS (focal) | 3.12.4-1ubuntu2+esm1 | puma 3.12.4-1ubuntu2+esm1 | Jan 8, 2024 |
| puma · Ubuntu 22.04.1 LTS (jammy) | 5.5.2-2ubuntu2+esm1 | puma 5.5.2-2ubuntu2+esm1 | Jan 8, 2024 |
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