CVE-2021-46743
First published: Tue Mar 29 2022(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/firebase/php-jwt | <6.0.0 | |
| composer/firebase/php-jwt | <6.0.0 | 6.0.0 |
| Google Firebase Php-jwt | <6.0.0 |
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Reference Links
- https://github.com/advisories/GHSA-8xf4-w7qw-pjjw (Advisory)
- https://nvd.nist.gov/vuln/detail/CVE-2021-46743
- https://github.com/firebase/php-jwt/issues/351
- https://github.com/firebase/php-jwt/releases/tag/v6.0.0
- https://github.com/FriendsOfPHP/security-advisories/blob/master/firebase/php-jwt/CVE-2021-46743.yaml
- collector/friends-of-php
- collector/github-advisory
- alias/GHSA-8xf4-w7qw-pjjw
- alias/CVE-2021-46743
- collector/nvd-index
- collector/nvd-cve
- agent/severity
- agent/references
- agent/author
- agent/type
- agent/event
- agent/weakness
- agent/description
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/tags
- collector/mitre-cve
- source/MITRE
- package-manager/composer
- vendor/google
- canonical/google firebase php-jwt