Bug 1584880 (CVE-2015-9235)

Summary:	CVE-2015-9235 nodejs-jsonwebtoken: verification step bypass with an altered token
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	dffrench, drusso, jmadigan, jshepherd, lgriffin, ngough, pwright, rrajasek, trepel
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	nodejs-jsonwebtoken 4.2.2	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:27:09 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:
Bug Blocks:	1584881

Description Laura Pardo 2018-05-31 20:53:31 UTC

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 23:21:08 UTC

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