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HTTP Request Smuggling Affecting puma package, versions <3.12.5 >=4.0.0, <4.3.4

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

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

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  • Snyk ID SNYK-RUBY-PUMA-570205
  • published 22 May 2020
  • disclosed 22 May 2020
  • credit Zeddy Yu
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Introduced: 22 May 2020

CVE-2020-11076 Open this link in a new tab
CWE-444 Open this link in a new tab

How to fix?

Upgrade puma to version 3.12.5, 4.3.4 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. An attacker could smuggle an HTTP response, by using an invalid transfer-encoding header.