Bug 1789556 (CVE-2019-16254)

Summary:	CVE-2019-16254 ruby: HTTP response splitting in WEBrick
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	amasferr, chazlett, hhorak, jorton, mo, mtasaka, pvalena, ruby-maint, ruby-packagers-sig, s, strzibny, vanmeeuwen+fedora, vondruch
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ruby 2.4.8, ruby 2.5.7, ruby 2.6.5, ruby 2.7.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-26 11:32:10 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1789557, 1791293, 1791294, 1791295, 1791296, 1791297, 1791298, 1954947, 1955050, 1957124, 2055231, 2055240
Bug Blocks:	1789559

Description Guilherme de Almeida Suckevicz 2020-01-09 19:38:18 UTC

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.

Reference:
https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254/

Comment 1 Guilherme de Almeida Suckevicz 2020-01-09 19:39:44 UTC

Created ruby tracking bugs for this issue:

Affects: fedora-all [bug 1789557]

Comment 2 Marco Benatto 2020-01-15 13:16:24 UTC

Upstream commit for this issue:

https://github.com/ruby/ruby/commit/3ce238b5f9795581eb84114dcfbdf4aa086bfecc

Comment 4 errata-xmlrpc 2021-05-25 13:14:03 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS

Via RHSA-2021:2104 https://access.redhat.com/errata/RHSA-2021:2104

Comment 5 Product Security DevOps Team 2021-05-26 11:32:10 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-16254

Comment 6 errata-xmlrpc 2021-06-03 11:25:53 UTC

This issue has been addressed in the following products:

  Red Hat Software Collections for Red Hat Enterprise Linux 7
  Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS

Via RHSA-2021:2230 https://access.redhat.com/errata/RHSA-2021:2230

Comment 7 errata-xmlrpc 2021-06-29 16:03:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:2587 https://access.redhat.com/errata/RHSA-2021:2587

Comment 8 errata-xmlrpc 2021-06-29 16:04:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:2588 https://access.redhat.com/errata/RHSA-2021:2588

Comment 9 errata-xmlrpc 2022-02-21 10:11:02 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions

Via RHSA-2022:0581 https://access.redhat.com/errata/RHSA-2022:0581

Comment 10 errata-xmlrpc 2022-02-21 10:11:57 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2022:0582 https://access.redhat.com/errata/RHSA-2022:0582