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[email protected]CVE-2021-41247

HistoryNov 04, 2021 - 6:15 p.m.

CVE-2021-41247

2021-11-0418:15:08

CWE-613

[email protected]

web.nvd.nist.gov

jupyterhub

cve-2021-41247

jupyter notebooks

jupyterlab

security vulnerability

upgrade

patching

multi-user server

logout issue

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

7.4 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

26.7%

JSON

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 configurations

Vulners

NVD

Node

jupyterhubkubespawnerRange1.0.0–1.5.0

jupyterhubkubespawnerRange<1.2.0

VendorProductVersionCPE
jupyterhubkubespawner*cpe:2.3:a:jupyterhub:kubespawner:*:*:*:*:*:*:*:*
jupyterhubkubespawner*cpe:2.3:a:jupyterhub:kubespawner:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
jupyterhub	kubespawner	*	cpe:2.3:a:jupyterhub:kubespawner::::::::
jupyterhub	kubespawner	*	cpe:2.3:a:jupyterhub:kubespawner::::::::

CNA Affected

[
  {
    "product": "jupyterhub",
    "vendor": "jupyterhub",
    "versions": [
      {
        "status": "affected",
        "version": ">= 1.0.0, < 1.5.0 -  jupyterhub (pip)"
      },
      {
        "status": "affected",
        "version": "< 1.2.0 -  jupyterhub (helm) "
      }
    ]
  }
]