Bug 1567228 – CVE-2018-3737 nodejs-sshpk: ReDoS when parsing crafted invalid public keys in lib/formats/ssh.js

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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...

Status:	NEW

Aliases:	CVE-2018-3737

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=moderate,public=20180312,repor...
Keywords:	Security

Depends On:	1591080
Blocks:	1567230
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Reported:	2018-04-13 11:31 EDT by Laura Pardo
Modified:	2018-06-13 22:46 EDT (History)
CC List:	13 users (show)

See Also:
Fixed In Version:	sshpk 1.14.1, sshpk 1.4.0, sshpk 1.3.2
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Description Laura Pardo 2018-04-13 11:31:34 EDT

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 01:02:01 EDT

Reference:

https://hackerone.com/reports/319593

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