CVE-2021-4314
It is possible to manipulate the JWT token without the knowledge of the JWT secret and authenticate without valid JWT token as any user.
Does this matter?
Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.44% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269, CWE-287
- Affected
- linuxfoundation/zowe api mediation layer
- Source
- zowe-security@lists.openmainframeproject.org
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.