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CVE-2016-10555

UNKNOWN
Published 2018-05-31T20:00:00Z
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No CVSS data available

Description

Since "algorithm" isn't enforced in jwt.decode()in jwt-simple 0.3.0 and earlier, a malicious user could choose what algorithm is sent sent to the server. If the server is expecting RSA but is sent HMAC-SHA with RSA's public key, the server will think the public key is actually an HMAC private key. This could be used to forge any data an attacker wants.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

HackerOne

jwt-simple node module

Affected Versions:

<=0.3.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed CRITICAL

Forgeable Public/Private Tokens in jwt-simple

GHSA-vgrx-w6rg-8fqf

Advisory Details

Affected versions of the `jwt-simple` package allow users to select what algorithm the server will use to verify a provided JWT. A malicious actor can use this behaviour to arbitrarily modify the contents of a JWT while still passing verification. For the common use case of the JWT, the end result is a complete authentication bypass with minimal effort. ## Recommendation Update to version 0.3.1 or later. Additionally, be sure to always specify an algorithm in calls to `.decode()`.

Affected Packages

npm jwt-simple
ECOSYSTEM: ≥0 <0.3.1

CVSS Scoring

CVSS Score

9.0

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2016-10555
WEB https://github.com/hokaccha/node-jwt-simple/pull/14
WEB https://github.com/hokaccha/node-jwt-simple/pull/16
WEB https://github.com/hokaccha/node-jwt-simple/commit/957957cfa44474049b4603b293569588ee9ffd97
WEB https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries
WEB https://www.npmjs.com/advisories/87

Advisory provided by GitHub Security Advisory Database. Published: November 6, 2018, Modified: August 31, 2020

References

https://nodesecurity.io/advisories/87
https://github.com/hokaccha/node-jwt-simple/pull/14
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries/
https://github.com/hokaccha/node-jwt-simple/pull/16
Published: 2018-05-31T20:00:00Z
Last Modified: 2024-09-16T16:38:09.923Z
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