Vulnerability · Published Mar 20, 2024 · Assigned by GitHub_M
CVE-2024-29033GoogleOAuthenticator.hosted_domain incorrectly verifies membership of an Google organization/workspace
High 7.5
In plain English
A high-severity security flaw in oauthenticator from jupyterhub. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
OAuthenticator provides plugins for JupyterHub to use common OAuth providers, as well as base classes for writing one's own Authenticators with any OAuth 2.0 provider. `GoogleOAuthenticator.hosted_domain` is used to restrict what Google accounts can be authorized access to a JupyterHub. The restriction is intented to be to Google accounts part of one or more Google organization verified to control specified domain(s). Prior to version 16.3.0, the actual restriction has been to Google accounts with emails ending with the domain. Such accounts could have been created by anyone which at one time was able to read an email associated with the domain. This was described by Dylan Ayrey (@dxa4481) in this [blog post] from 15th December 2023). OAuthenticator 16.3.0 contains a patch for this issue. As a workaround, restrict who can login another way, such as `allowed_users` or `allowed_google_groups`.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | oauthenticator | 16.3.0 | GHSA-55m3-44xf-hg4h |
| PyPI | oauthenticator | 16.3.0 | PYSEC-2026-1710 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jupyterhub | oauthenticator | < 16.3.0 |
Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N