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Information Exposure Affecting puma package, versions <4.3.11 >=5.0.0, <5.6.2

0.0
high

Snyk CVSS

    Attack Complexity High
    User Interaction Required
    Scope Changed
    Confidentiality High
    Integrity High

    Threat Intelligence

    EPSS 0.19% (56th percentile)
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NVD
5.9 medium
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Red Hat
8 high
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SUSE
6.1 medium

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  • Snyk ID SNYK-RUBY-PUMA-2400629
  • published 13 Feb 2022
  • disclosed 13 Feb 2022
  • credit Jean Boussier
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Introduced: 13 Feb 2022

CVE-2022-23634 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade puma to version 4.3.11, 5.6.2 or higher.

Overview

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 Rails or Puma version fixes the vulnerability.