CVE-2021-46743
Key/algorithm type confusion
Einstufung nach Quelle
Trivys eigenes Label ist CRITICAL. Kritisch laut NVD, GHSA.
Beschreibung
In Firebase PHP-JWT before 6.0.0, an algorithm-confusion issue (e.g., RS256 / HS256) exists via the kid (aka Key ID) header, when multiple types of keys are loaded in a key ring. This allows an attacker to forge tokens that validate under the incorrect key. NOTE: this provides a straightforward way to use the PHP-JWT library unsafely, but might not be considered a vulnerability in the library itself.
Betroffene Pakete und behobene Versionen
| Quelle | Paket | Behoben in |
|---|---|---|
| composer::GitHub Security Advisory Composer | firebase/php-jwt | 6.0.0 |
| composer::PHP Security Advisories Database | firebase/php-jwt | kein Fix angegeben |
Referenzen
- https://github.com/FriendsOfPHP/security-advisories/blob/master/firebase/php-jwt/CVE-2021-46743.yaml
- https://github.com/advisories/GHSA-8xf4-w7qw-pjjw
- https://github.com/firebase/php-jwt
- https://github.com/firebase/php-jwt/issues/351
- https://github.com/firebase/php-jwt/releases/tag/v6.0.0
- https://nvd.nist.gov/vuln/detail/CVE-2021-46743