CVE-2021-41247 incomplete logout in JupyterHub

2021-11-0417:15:11

CWE-613

GitHub_M

www.cve.org

3.5 Low

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

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.

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) "
      }
    ]
  }
]