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CVE-2021-46743

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 29-03-2022 09:15
Last modified: - 08-04-2022 05:14
Total changes: - 2

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Low
Attack complexity
Network
Attack vector
None
Availability
High
Confidentiality
High
Integrity
None
Privileges required
Unchanged
Scope
None
User interaction
9.1
Base score
3.9
5.2
Exploitability score
Impact score
 

Verification logic

OR
vendor=google AND product=firebase_php-jwt AND versionEndExcluding=6.0.0
 

Reference

 


Keywords

NVD

 

CVE-2021-46743

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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