CVE-2021-46743

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.

CVSS v3 9.1 CRITICAL
CVSS v2.0 5.8 MEDIUM

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/firebase/php-jwt/issues/351	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:google:firebase_php-jwt:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2022-03-29 07:15

Updated : 2024-02-28 19:09

NVD link : CVE-2021-46743

Mitre link : CVE-2021-46743

CVE.ORG link : CVE-2021-46743

JSON object : View

Products Affected

google

firebase_php-jwt

CWE

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')

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