GHSA-h533-5v22-8vcp: firebase/php-jwt "None" Algorithm Treated As Valid Vulnerability

CRITICAL
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Advisory Summary

GHSA-h533-5v22-8vcp is a CRITICAL "none" algorithm treated as valid vulnerability (General Security Weakness) affecting firebase/php-jwt libraries in the Packagist ecosystem. The issue involves "none" algorithm treated as valid on tokens. Remediation is available by upgrading affected packages to version 2.0.0.

GHSA-h533-5v22-8vcp at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-h533-5v22-8vcp
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product firebase/php-jwt
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix GHSA-h533-5v22-8vcp

To remediate this vulnerability, upgrade all affected firebase/php-jwt dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

firebase/php-jwt fixed: 2.0.0 
Upgrade firebase/php-jwt to 2.0.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for firebase/php-jwt

How to Check if You Are Affected

To determine whether your application is affected by GHSA-h533-5v22-8vcp, inspect your project dependencies for firebase/php-jwt:

inspect dependencies for firebase/php-jwt

Analyze the terminal output to locate any version of firebase/php-jwt in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In firebase/php-jwt, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Several widely-used JSON Web Token (JWT) libraries, including node-jsonwebtoken, pyjwt, namshi/jose, php-jwt, and jsjwt, are affected by critical vulnerabilities that could allow attackers to bypass the verification step when using asymmetric keys (RS256, RS384, RS512, ES256, ES384, ES512).

GHSA-h533-5v22-8vcp Affected firebase/php-jwt Versions

1 component(s)
Fixed Versions:
2.0.0
Product / Package Ecosystem Affected Versions Fixed Version
firebase/php-jwt
 Packagist
< 2.0.0
2.0.0

References

Security Fix Commit FIX COMMIT
https://github.com/firebase/php-jwt/commit/b2c2be6a45fda769c8c2ffe5ec4259a9d1e46e5b
auth0.com/blog/2015/03/31/cri... WEB
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries
auth0.com/blog/critical-vulne... WEB
https://auth0.com/blog/critical-vulnerabilities-in-json-web-token-libraries
firebase/php-jwt Source Repository REPOSITORY
https://github.com/FriendsOfPHP/security-advisories/blob/master/firebase/php-jwt/2015-04-02.yaml
firebase/php-jwt Source Repository REPOSITORY
https://github.com/firebase/php-jwt

Frequently Asked Questions

What is GHSA-h533-5v22-8vcp?
GHSA-h533-5v22-8vcp is a security vulnerability in firebase/php-jwt involving "None" Algorithm treated as valid on tokens under General Security Weakness.
Which firebase/php-jwt versions are affected?
Affected versions include releases prior to 2.0.0 across affected packages: firebase/php-jwt.
What version fixes GHSA-h533-5v22-8vcp?
Upgrading to 2.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is firebase/php-jwt affected?
Yes, firebase/php-jwt is affected in releases prior to 2.0.0. Upgrade your dependency to 2.0.0 or later.
What CWE is associated with GHSA-h533-5v22-8vcp?
GHSA-h533-5v22-8vcp is classified under General Security Weakness.
How can I check Packagist dependencies for GHSA-h533-5v22-8vcp?
Run the dependency tree command: 'inspect dependencies for firebase/php-jwt'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-h533-5v22-8vcp",
  "modified" : "2024-05-15T21:38:49Z",
  "published" : "2024-05-15T21:38:49Z",
  "aliases" : [ ],
  "summary" : "firebase/php-jwt: \"None\" Algorithm treated as valid on tokens",
  "details" : "Several widely-used JSON Web Token (JWT) libraries, including node-jsonwebtoken, pyjwt, namshi/jose, php-jwt, and jsjwt, are affected by critical vulnerabilities that could allow attackers to bypass the verification step when using asymmetric keys (RS256, RS384, RS512, ES256, ES384, ES512).",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "firebase/php-jwt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/firebase/php-jwt/commit/b2c2be6a45fda769c8c2ffe5ec4259a9d1e46e5b"
  }, {
    "type" : "WEB",
    "url" : "https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries"
  }, {
    "type" : "WEB",
    "url" : "https://auth0.com/blog/critical-vulnerabilities-in-json-web-token-libraries"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FriendsOfPHP/security-advisories/blob/master/firebase/php-jwt/2015-04-02.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/firebase/php-jwt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-15T21:38:49Z",
    "nvd_published_at" : null
  }
}