Bug 1661002 (CVE-2018-12121) - CVE-2018-12121 nodejs: Denial of Service with large HTTP headers
Summary: CVE-2018-12121 nodejs: Denial of Service with large HTTP headers
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-12121
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1661004 1661003 Engineering1665986 Engineering1665987 Engineering1665988 Engineering1666381 Engineering1666382 Red Hat1720105 Red Hat1720106 Red Hat1720107 Red Hat1720108
Blocks: Embargoed1661014
TreeView+ depends on / blocked
 
Reported: 2018-12-19 19:45 UTC by Laura Pardo
Modified: 2021-02-16 22:38 UTC (History)
19 users (show)

Fixed In Version: nodejs 6.15.0, nodejs 8.14.0, nodejs 10.14.0, nodejs 11.3.0
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Clone Of:
Environment:
Last Closed: 2019-07-22 15:06:57 UTC

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2019:1844 0 None None None 2019-07-24 14:56:04 UTC
Red Hat Product Errata RHBA-2019:1869 0 None None None 2019-07-26 18:08:48 UTC
Red Hat Product Errata RHSA-2019:1821 0 None None None 2019-07-22 13:37:54 UTC
Red Hat Product Errata RHSA-2019:2258 0 None None None 2019-08-06 12:33:11 UTC
Red Hat Product Errata RHSA-2019:3497 0 None None None 2019-11-05 21:02:19 UTC

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
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