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HTTP Request Smuggling Affecting puma package, versions <4.3.12 >=5.0.0, <5.6.4

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High

    Threat Intelligence

    EPSS 0.47% (76th percentile)
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-RUBY-PUMA-2437090
  • published 31 Mar 2022
  • disclosed 30 Mar 2022
  • credit Zhang Zeyu
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Introduced: 30 Mar 2022

CVE-2022-24790 Open this link in a new tab
CWE-444 Open this link in a new tab

How to fix?

Upgrade puma to version 4.3.12, 5.6.4 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 HTTP Request Smuggling via the front-end proxy, due to improper validation of the incoming HTTP request which should match the RFC7230 standard. This can lead to a disagreement on where a request starts and ends between Puma and the frontend proxy.

Note: When deploying a proxy in front of Puma, the user should turn on all functionality to make sure that the request matches the RFC7230 standard.