Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Zowe Api Mediation Layer | >= 1.16.0, < 1.19.0 |
Related Weaknesses (CWE)
References
FAQ
What is CVE-2021-4314?
CVE-2021-4314 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...
How severe is CVE-2021-4314?
CVE-2021-4314 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-4314?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Zowe Api Mediation Layer.