CVE-2021-41247

Summary

JupyterHub is an open source multi-user server for Jupyter notebooks. In affected versions users 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. 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. The only workaround is to make sure that only one JupyterLab tab is open when you log out.

Affected Software

VendorProductVersion RangeStatus
jupyterhubjupyterhub>= 1.0.0, < 1.5.0 - jupyterhub (pip)affected
jupyterhubjupyterhub< 1.2.0 - jupyterhub (helm)affected

Weaknesses

  • CWE-613: CWE-613: Insufficient Session Expiration

ADP Enrichment

CVE Program Container

Additional References

References