Bug 1584880 – CVE-2015-9235 nodejs-jsonwebtoken: verification step bypass with an altered token

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Bug 1584880 - (CVE-2015-9235) CVE-2015-9235 nodejs-jsonwebtoken: verification step bypass with an altered token

Summary:	CVE-2015-9235 nodejs-jsonwebtoken: verification step bypass with an altered t...

Status:	NEW

Aliases:	CVE-2015-9235

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

Priority	high Severity high
Target Milestone:	---
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Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=important,public=20180331,repo...
Keywords:	Security

Depends On:
Blocks:	1584881
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Reported:	2018-05-31 16:53 EDT by Laura Pardo
Modified:	2018-06-03 19:21 EDT (History)
CC List:	10 users (show)

See Also:
Fixed In Version:	nodejs-jsonwebtoken 4.2.2
Doc Type:	If docs needed, set a value
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Description Laura Pardo 2018-05-31 16:53:31 EDT

A flaw was found in jsonwebtoken node module before 4.2.2, it is possible for an attacker to bypass verification when a token digitally signed with an asymetric key (RS/ES family) of algorithms but instead the attacker send a token digitally signed with a symmetric algorithm (HS* family)


References:
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/ 	
https://nodesecurity.io/advisories/17 	
https://www.timmclean.net/2015/02/25/jwt-alg-none.html

Patch:
https://github.com/auth0/node-jsonwebtoken/commit/1bb584bc382295eeb7ee8c4452a673a77a68b687

Comment 1 Jason Shepherd 2018-06-03 19:21:08 EDT

The fh-supercore component of Red Hat Mobile Application Platform uses nodejs-jsonwebtoken version 7.2.1 which is not affected by this vulnerablity, see:

https://github.com/auth0/node-jsonwebtoken/blob/8da893ae31e0266cb9277c4b931f79375841e545/verify.js#L62

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