Bug 1789556 (CVE-2019-16254) - CVE-2019-16254 ruby: HTTP response splitting in WEBrick
Summary: CVE-2019-16254 ruby: HTTP response splitting in WEBrick
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-16254
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1789557 1791293 1791294 1791295 1791296 1791297 1791298 1954947 1955050 1957124 2055231 2055240
Blocks: 1789559
TreeView+ depends on / blocked
 
Reported: 2020-01-09 19:38 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-02-21 10:12 UTC (History)
13 users (show)

Fixed In Version: ruby 2.4.8, ruby 2.5.7, ruby 2.6.5, ruby 2.7.0
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Clone Of:
Environment:
Last Closed: 2021-05-26 11:32:10 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:2587 0 None None None 2021-06-29 16:03:25 UTC
Red Hat Product Errata RHSA-2021:2588 0 None None None 2021-06-29 16:04:08 UTC
Red Hat Product Errata RHSA-2022:0581 0 None None None 2022-02-21 10:11:04 UTC
Red Hat Product Errata RHSA-2022:0582 0 None None None 2022-02-21 10:11:59 UTC

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
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