CVE-2021-4314

It is possible to manipulate the JWT token without the knowledge of the JWT secret and authenticate without valid JWT token as any user. This is happening only in the situation when zOSMF doesn’t have the APAR PH12143 applied. This issue affects: 1.16 versions to 1.19. What happens is that the services using the ZAAS client or the API ML API to query will be deceived into believing the information in the JWT token is valid when it isn’t. It’s possible to use this to persuade the southbound service that different user is authenticated.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/zowe/api-layer/	Third Party Advisory
https://github.com/zowe/api-layer/	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:linuxfoundation:zowe_api_mediation_layer:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:37

Type	Values Removed	Values Added
Summary		(es) Es posible manipular el token JWT sin conocer el secreto de JWT y autenticarse sin un token JWT válido como cualquier usuario. Esto sucede sólo en la situación en la que zOSMF no tiene aplicado el APAR PH12143. Este problema afecta: versiones 1.16 a 1.19. Lo que sucede es que los servicios que utilizan el cliente ZAAS o la API API ML para realizar consultas serán engañados haciéndoles creer que la información en el token JWT es válida cuando no lo es. Es posible utilizar esto para persuadir al servicio en dirección sur de que un usuario diferente está autenticado.
References	~~() https://github.com/zowe/api-layer/ - Third Party Advisory~~	() https://github.com/zowe/api-layer/ - Third Party Advisory

Information

Published : 2023-01-18 16:15

Updated : 2024-11-21 06:37

NVD link : CVE-2021-4314

Mitre link : CVE-2021-4314

CVE.ORG link : CVE-2021-4314

JSON object : View

Products Affected

linuxfoundation

zowe_api_mediation_layer

CWE

CWE-269

Improper Privilege Management

CWE-287

Improper Authentication

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