HTTP Response Splitting Affecting rubygem-puma-doc package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
1.03% (84th percentile)

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  • Snyk IDSNYK-RHEL7-RUBYGEMPUMADOC-3374699
  • published26 Mar 2023
  • disclosed2 Mar 2020

Introduced: 2 Mar 2020

CVE-2020-5247  (opens in a new tab)
CWE-113  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 rubygem-puma-doc.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rubygem-puma-doc package and not the rubygem-puma-doc package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. CR, LF or/r, /n) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.

CVSS Scores

version 3.1