jupyter-scheduler's endpoint is missing authentication
Date: 2024-05
Affected: pip/jupyter-scheduler, pip/jupyter-scheduler, pip/jupyter-scheduler
Attack vector: auth-bypass
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2024-28188
CWE: CWE-200
CWE-287
CVSS: 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

### Impact `jupyter_scheduler` is missing an authentication check in Jupyter Server on an API endpoint (`GET /scheduler/runtime_environments`) which lists the names of the Conda environments on the server. In affected versions, `jupyter_scheduler` allows an unauthenticated user to obtain the list of Conda environment names on the server. This reveals any information that may be present in a Conda environment name. This issue does **not** allow an unauthenticated third party to read, modify, or enter the Conda environments present on the server where `jupyter_scheduler` is running. This issue only reveals the list of Conda environment names. Impacted versions: `>=1.0.0,<=1.1.5 ; ==1.2.0 ; >=1.3.0,<=1.8.1 ; >=2.0.0,<=2.5.1` ### Patches * `jupyter-scheduler==1.1.6` * `jupyter-scheduler==1.2.1` * `jupyter-scheduler==1.8.2` * `jupyter-scheduler==2.5.2` ### Workarounds Server operators who are unable to upgrade can disable the `jupyter-scheduler` extension with: ``` jupyter server extension disable jupyter-scheduler ``` ### References If you have any questions or comments about this advisory we ask that you contact AWS/Amazon Security via our vulnerability reporting page [1] or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue. [1] Vulnerability reporting page: https://aws.amazon.com/security/vulnerability-reporting


Mitigations:

Architectural layers (MAESTRO):