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CVE-2021-41247

incomplete logout in JupyterHub

Published: Nov 4, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-613
NVD MITRE
3.5CVSSLOW
EPSS Score
0.8%
Top 49.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-613

Affected Products

jupyterhubjupyterhub
On-prem
AI / ML / notebook-mlops
jupyterhubjupyter
Mixed
AI / ML / notebook-mlops
jupyterhubPyPIOSS Libraries
jupyterhuboss-projectAI / MLaka oauthenticator, jupyter-server-proxy
jupyteross-projectAI / MLaka notebook, jupyter server, jupyterlab
pypipackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Defense Evasion
Initial Access
View detailed technique mapping

References

https://github.com/jupyterhub/jupyterhub/security/advisories/GHSA-cw7p-q79f-m2v7
github.com
https://github.com/jupyterhub/jupyterhub/commit/5ac9e7f73a6e1020ffddc40321fc53336829fe27
github.com
https://nvd.nist.gov/vuln/detail/CVE-2021-41247
nvd.nist.gov
and 2 more references View all →

Timeline

Published
Nov 4, 2021
Last Updated
Nov 21, 2024

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