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:	Vulnerabilities	Assignee:	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

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 1 Sam James archtester

2020-03-13 21:00:09 UTC

This has been fixed by maintainer:

Fixed version: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=cc4baf2d7281a98d9016e598b7784766da4529ea

Removing some old (also for bug 711076): https://gitweb.gentoo.org/repo/gentoo.git/commit/www-servers/puma?id=78d16ec499eaaf69025d7ce840b2ce3c68bba140

Changing to [glsa?]

Comment 2 Thomas Deutschmann (RETIRED) gentoo-dev

2020-03-15 02:08:01 UTC

GLSA Vote: No!

Repository is clean, all done!