CVE-2024-37300

Globus `identity_provider` restriction ignored when used with `allow_all` in JupyterHub 5.0

Description

OAuthenticator is software that allows OAuth2 identity providers to be plugged in and used with JupyterHub. JupyterHub < 5.0, when used with `GlobusOAuthenticator`, could be configured to allow all users from a particular institution only. This worked fine prior to JupyterHub 5.0, because `allow_all` did not take precedence over `identity_provider`. Since JupyterHub 5.0, `allow_all` does take precedence over `identity_provider`. On a hub with the same config, now all users will be allowed to login, regardless of `identity_provider`. `identity_provider` will basically be ignored. This is a documented change in JupyterHub 5.0, but is likely to catch many users by surprise. OAuthenticator 16.3.1 fixes the issue with JupyterHub 5.0, and does not affect previous versions. As a workaround, do not upgrade to JupyterHub 5.0 when using `GlobusOAuthenticator` in the prior configuration.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.17%
Affected: jupyterhub oauthenticator
Published at:
Updated at:

References

Link Tags
https://github.com/jupyterhub/oauthenticator/security/advisories/GHSA-gprj-3p75-f996
https://github.com/jupyterhub/oauthenticator/commit/d1aea05fa89f2beae15ab0fa0b0d071030f79654
https://jupyterhub.readthedocs.io/en/stable/howto/upgrading-v5.html#authenticator-allow-all-and-allow-existing-users

Frequently Asked Questions

What is the severity of CVE-2024-37300?
CVE-2024-37300 has been scored as a high severity vulnerability.
How to fix CVE-2024-37300?
To fix CVE-2024-37300, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-37300 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-37300 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-37300?
CVE-2024-37300 affects jupyterhub oauthenticator.
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