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Bug 711336 (CVE-2020-5249)

Summary: <www-servers/puma-{3.12.4,4.3.3}: HTTP response splitting (CVE-2020-5249)
Product: Gentoo Security Reporter: Sam James <sam>
Component: VulnerabilitiesAssignee: Gentoo Security <security>
Status: RESOLVED FIXED    
Severity: normal CC: ruby
Priority: Normal    
Version: unspecified   
Hardware: All   
OS: Linux   
URL: https://github.com/puma/puma/security/advisories/GHSA-33vf-4xgg-9r58
Whiteboard: B4 [noglsa cve]
Package list:
Runtime testing required: ---

Description Sam James archtester Gentoo Infrastructure gentoo-dev Security 2020-03-02 17:24:15 UTC
Description:
"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."

Patch: https://github.com/puma/puma/commit/c22712fc93284a45a93f9ad7023888f3a65524f3
Comment 2 Thomas Deutschmann gentoo-dev 2020-03-15 02:08:01 UTC
GLSA Vote: No!

Repository is clean, all done!