CVE-2021-41194

FirstUseAuthenticator is a JupyterHub authenticator that helps new users set their password on their first login to JupyterHub. When JupyterHub is used with FirstUseAuthenticator, a vulnerability in versions prior to 1.0.0 allows unauthorized access to any user's account if `create_users=True` and the username is known or guessed. One may upgrade to version 1.0.0 or apply a patch manually to mitigate the vulnerability. For those who cannot upgrade, there is no complete workaround, but a partial mitigation exists. One can disable user creation with `c.FirstUseAuthenticator.create_users = False`, which will only allow login with fully normalized usernames for already existing users prior to jupyterhub-firstuserauthenticator 1.0.0. If any users have never logged in with their normalized username (i.e. lowercase), they will still be vulnerable until a patch or upgrade occurs.
Configurations

Configuration 1 (hide)

cpe:2.3:a:jupyterhub:first_use_authenticator:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-10-28 20:15

Updated : 2024-02-28 18:48


NVD link : CVE-2021-41194

Mitre link : CVE-2021-41194

CVE.ORG link : CVE-2021-41194


JSON object : View

Products Affected

jupyterhub

  • first_use_authenticator
CWE
NVD-CWE-noinfo CWE-284

Improper Access Control