Bug 1567228 (CVE-2018-3737) - CVE-2018-3737 nodejs-sshpk: ReDoS when parsing crafted invalid public keys in lib/formats/ssh.js
Summary: CVE-2018-3737 nodejs-sshpk: ReDoS when parsing crafted invalid public keys in...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-3737
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: 1591080 1711730
Blocks: 1567230
TreeView+ depends on / blocked
 
Reported: 2018-04-13 15:31 UTC by Laura Pardo
Modified: 2021-03-22 04:24 UTC (History)
25 users (show)

Fixed In Version: sshpk 1.14.1, sshpk 1.3.2
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Clone Of:
Environment:
Last Closed: 2020-06-19 05:20:25 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:2625 0 None None None 2020-06-19 03:44:15 UTC

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.
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