Bug 1390494

Summary: nodejs-jwt-simple: Forgeable public/private tokens
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: tchollingsworth
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: nodejs-jwt-simple 0.3.0 Doc Type: If docs needed, set a value
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Clone Of: Environment:
Last Closed: 2019-06-08 03:01:45 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1390496, 1390497    
Bug Blocks:    

Description Andrej Nemec 2016-11-01 09:01:00 UTC 
'jwt-simple' is a JSON Web Token encode and decode module. Affected versions of this package are vulnerable to an Authentication Bypass attack, due to the "algorithm" not being enforced. Attackers are given the opportunity to choose the algorithm sent to the server and generate signatures with arbitrary contents. The server expects an asymmetric key (RSA) but is sent a symmetric key (HMAC-SHA) with RSA's public key, so instead of going through a key validation process, the server will think the public key is actually an HMAC private key.

References:

https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/
https://github.com/hokaccha/node-jwt-simple/pull/14
https://github.com/hokaccha/node-jwt-simple/pull/16
https://github.com/hokaccha/node-jwt-simple/commit/957957cfa44474049b4603b293569588ee9ffd97
Comment 1 Andrej Nemec 2016-11-01 09:02:29 UTC 
Created nodejs-jwt-simple tracking bugs for this issue:

Affects: fedora-all [bug 1390496]
Affects: epel-all [bug 1390497]
Comment 2 Product Security DevOps Team 2019-06-08 03:01:45 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.