Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXZncngtdzZyZy04ZnFm

Forgeable Public/Private Tokens in jwt-simple

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().

Permalink: https://github.com/advisories/GHSA-vgrx-w6rg-8fqf
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXZncngtdzZyZy04ZnFm
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 5 years ago
Updated: over 1 year ago

Identifiers: GHSA-vgrx-w6rg-8fqf, CVE-2016-10555
References:

• https://nvd.nist.gov/vuln/detail/CVE-2016-10555
• https://github.com/hokaccha/node-jwt-simple/pull/16
• https://github.com/hokaccha/node-jwt-simple/commit/957957cfa44474049b4603b293569588ee9ffd97
• https://www.npmjs.com/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/advisories/GHSA-vgrx-w6rg-8fqf

Repository: https://github.com/hokaccha/node-jwt-simple
Blast Radius: 0.0

Affected Packages