GitHub Advisoryadvisory · PyPI
GHSA-cw7p-q79f-m2v7 incomplete JupyterHub logout with simultaneous JupyterLab sessions
MEDIUM
Official page ↗
- Aliases
- CVE-2021-41247
- Ecosystem
- PyPI
- Packages
- jupyterhub
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-613
- Reviewed
- 2021-11-04
Affected packages
• PyPI jupyterhub: >= 1.0.0, < 1.5.0 → fixed in 1.5.0
Description
Impact
Users of JupyterLab with JupyterHub who have multiple JupyterLab tabs open in the same browser session, may see incomplete logout from the single-user server, as fresh credentials (for the single-user server only, not the Hub) reinstated after logout, if another active JupyterLab session is open while the logout takes place.
Patches
Upgrade to JupyterHub 1.5. For distributed deployments, it is jupyterhub in the _user_ environment that needs patching. There are no patches necessary in the Hub environment.
Workarounds
The only workaround is to make sure that only one JupyterLab tab is open when you log out.
Related
Weakness · not in database (1)
Alias · CVE (1)
- CVE-2021-41247 JupyterHub is an open source multi-user server for Jupyter notebooks. vulnerability
References
- https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7 web
- https://nvd.nist.gov/vuln/detail/CVE-2021-41247 advisory
- https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27 web
- https://github.com/jupyterhub/jupyterhub package
- https://github.com/pypa/advisory-database/tree/main/vulns/jupyterhub/PYSEC-2021-386.yaml web