CVE-2022-23634

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.

Affected products

Alt Linux, Astra Linux, Linuxmint, Puma, Rails, Red Os, Rocky Linux, Suse

Puma

< 4.3.11, 5.6.2

Fix

Available

CVSS 3.1

8.0 HIGH

EPSS

2.1% (80th percentile)

Weakness

CWE-404, CWE-200

NVD status

Modified

Published

2022-02-11

No exploit for CVE-2022-23634 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.