Homepage

Arbitrary Code Injection The advisory has been revoked - it doesn't affect any version of package puma  (opens in a new tab)

Threat Intelligence

EPSS
1.57% (73rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-DEBIAN9-PUMA-559117
  • published3 Mar 2020
  • disclosed2 Mar 2020
Report a new vulnerability Found a mistake?

Introduced: 2 Mar 2020

CVE-2020-5249  (opens in a new tab)
CWE-74  (opens in a new tab)

Amendment

The Debian security team deemed this advisory irrelevant for Debian:9.

NVD Description

Note: Versions mentioned in the description apply only to the upstream puma package and not the puma package as distributed by Debian.

In Puma (RubyGem) before 4.3.3 and 3.12.4, if an application using Puma allows untrusted input in an early-hints header, an attacker can use a carriage return character 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-2020-5247, which fixed this vulnerability but only for regular responses. This has been fixed in 4.3.3 and 3.12.4.

References