CVE-2021-4314

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.

Categories

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.06%
Affected: Open Mainframe Project Zowe
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-4314?
CVE-2021-4314 has been scored as a medium severity vulnerability.
How to fix CVE-2021-4314?
To fix CVE-2021-4314, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4314 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-4314 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4314?
CVE-2021-4314 affects Open Mainframe Project Zowe.
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