Bug 1567228 (CVE-2018-3737)

Summary:	CVE-2018-3737 nodejs-sshpk: ReDoS when parsing crafted invalid public keys in lib/formats/ssh.js
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:	bdettelb, dblechte, dfediuck, dffrench, drusso, eedri, hhorak, jmadigan, jorton, jshepherd, jupittma, lgriffin, mgoldboi, michal.skrivanek, ngough, omachace, pwright, rrajasek, sbonazzo, sgratch, sherold, tomckay, trepel, yturgema, zsvetlik
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	sshpk 1.14.1, sshpk 1.3.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-06-19 05:20:25 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:	1591080, 1711730
Bug Blocks:	1567230

Description Laura Pardo 2018-04-13 15:31:34 UTC

A flaw was found in sshpk versions before 1.14.1. The regular expressions used for parsing OpenSSH-format public keys in sshpk are resulting in exponential increases in runtime when parsing maliciously constructed inputs.


References:
https://github.com/joyent/node-sshpk/issues/44

Pacth:
https://github.com/joyent/node-sshpk/commit/46065d38a5e6d1bccf86d3efb2fb83c14e3f9957

Comment 2 Sam Fowler 2018-06-08 05:02:01 UTC

Reference:

https://hackerone.com/reports/319593

Comment 7 errata-xmlrpc 2020-06-19 03:44:11 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-2020:2625 https://access.redhat.com/errata/RHSA-2020:2625

Comment 8 Product Security DevOps Team 2020-06-19 05:20:25 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-2018-3737

Comment 9 Jason Shepherd 2021-03-22 02:18:50 UTC

Statement:

Red Hat Quay includes sshpk as a dependency of protractor which is only used during a build. The sshpk dependency is not used at runtime therefore this vulnerability has a low impact for Red Hat Quay.