Bug 1661002 (CVE-2018-12121)

Summary:	CVE-2018-12121 nodejs: Denial of Service with large HTTP headers
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	avibelli, bgeorges, cbuissar, dbeveniu, fidencio, hesilva, hhorak, jbalunas, jhrozek, jorton, jpallich, krathod, lthon, mszynkie, pgallagh, rruss, tjaros, trogers, zsvetlik
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nodejs 6.15.0, nodejs 8.14.0, nodejs 10.14.0, nodejs 11.3.0	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-07-22 15:06:57 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:	1661004, 1661003, 1665986, 1665987, 1665988, 1666381, 1666382, 1720105, 1720106, 1720107, 1720108
Bug Blocks:	1661014

Description Laura Pardo 2018-12-19 19:45:15 UTC

A flaw was found in Node.js versions before 6.15.0, 8.14.0, 10.14.0 and 11.3.0. A Denial of Service with large HTTP headers. By using a combination of many requests with maximum sized headers (almost 80 KB per connection), and carefully timed completion of the headers, it is possible to cause the HTTP server to abort from heap allocation failure. Attack potential is mitigated by the use of a load balancer or other proxy layer. 


References:
https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/

Comment 1 Laura Pardo 2018-12-19 19:45:33 UTC

Created nodejs tracking bugs for this issue:

Affects: epel-all [bug 1661004]
Affects: fedora-all [bug 1661003]

Comment 2 Cedric Buissart 2019-01-10 14:22:10 UTC

Upstream fix:
(master)    https://github.com/nodejs/node/commit/18603524
(node.js 6) https://github.com/nodejs/node/commit/92231a56

Comment 4 Cedric Buissart 2019-01-14 13:58:24 UTC

Note:
The original fix, reducing the maximum header length down to 8K (instead of 80K) has been found to lead to regressions. A 2nd commit added the ability to modify the maximum header size on the fly :

Upstream fixes:
For node.js : 
    + https://github.com/nodejs/node/commit/cdcb1b77
    + https://github.com/nodejs/node/commit/632f2633

For http-parser: 
    + https://github.com/nodejs/http-parser/commit/0ae8d93f

Comment 8 Sam Fowler 2019-06-13 06:25:17 UTC

Statement:

The nodejs RPMs shipped in Red Hat OpenShift Container Platform (OCP) versions 3.6 through 3.10 are vulnerable to this flaw because they contain the affected code. Later versions of OCP used nodejs RPMs delivered from Red Hat Software Collections and Red Hat Enterprise Linux channels.

Comment 12 errata-xmlrpc 2019-07-22 13:37:52 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 7.4 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS
  Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS

Via RHSA-2019:1821 https://access.redhat.com/errata/RHSA-2019:1821

Comment 13 Product Security DevOps Team 2019-07-22 15:06:57 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-2018-12121

Comment 14 errata-xmlrpc 2019-08-06 12:33:10 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2258 https://access.redhat.com/errata/RHSA-2019:2258

Comment 17 errata-xmlrpc 2019-11-05 21:02:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3497 https://access.redhat.com/errata/RHSA-2019:3497