Vulnerability · Published Jan 18, 2023 · Assigned by Zowe
CVE-2021-4314
Medium 5.3
In plain English
A medium-severity privilege mismanagement in Zowe from Open Mainframe Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Open Mainframe Project | Zowe | 1.16.0 – before 1.19.0 |
Weakness: CWE-269, CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N