CVE-2021-4314 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00076.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Linuxfoundation	Zowe Api Mediation Layer

Configuration 1 [-]

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

No data.

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Advisories

Source	ID	Title
EUVD	EUVD-2021-34144	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.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/zowe/api-layer/

History

Thu, 03 Apr 2025 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Zowe

Published: 2023-01-18T15:23:42.797Z

Updated: 2025-04-03T19:48:49.004Z

Reserved: 2023-01-18T15:23:09.523Z

Link: CVE-2021-4314

Vulnrichment

Updated: 2024-08-03T17:23:10.517Z

NVD

Status : Modified

Published: 2023-01-18T16:15:11.130

Modified: 2025-04-03T20:15:16.207

Link: CVE-2021-4314

Redhat

No data.

OpenCVE Enrichment

No data.

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