Information Exposure Affecting puma Open this link in a new tab package, versions <4.3.11 >=5.0.0, <5.6.2
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13 Feb 2022
13 Feb 2022
How to fix?
puma to version 4.3.11, 5.6.2 or higher.
puma is a simple, fast, threaded, and highly concurrent HTTP 1.1 server for Ruby/Rack applications. Puma is intended for use in both development and production environments. It's great for highly concurrent Ruby implementations such as Rubinius and JRuby as well as as providing process worker support to support CRuby well.
Affected versions of this package are vulnerable to Information Exposure via the
close function which is not always called on the response body in
puma. As a result, Rails, which depends on the response body being closed in order for its
CurrentAttributes implementation to work correctly, can leak information. This is related to CVE-2022-23633. Upgrading to a patched
Puma version fixes the vulnerability.