CVE-2021-4314
5.3 · MEDIUMOverview
CVE-2021-4314 is a medium-severity vulnerability affecting linuxfoundation zowe_api_mediation_layer. It was published on January 18, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from linuxfoundation. Update zowe_api_mediation_layer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linuxfoundation | zowe_api_mediation_layer | >= 1.16.0, < 1.19.0 | Affected |
Frequently Asked Questions
What is CVE-2021-4314?
CVE-2021-4314 is a medium-severity vulnerability affecting linuxfoundation zowe_api_mediation_layer. It was published on January 18, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2021-4314?
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-4314?
Check the references section for vendor advisories and patches from linuxfoundation. Update zowe_api_mediation_layer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-4314?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-4314 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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