CVE-2024-37300: Oauthenticator Globus `identity_provider` Restriction Ignored When Vulnerability

HIGH
Advisory Identifier: GHSA-gprj-3p75-f996
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CVSS 8.1
CWE-863
Published
Advisory Summary

CVE-2024-37300 is a HIGH (CVSS 8.1) globus `identity_provider` restriction ignored when vulnerability (CWE-863: Incorrect Authorization) affecting Oauthenticator libraries in the PyPI ecosystem. The issue involves globus `identity_provider` restriction ignored when used with `allow_all` in jupyterhub 5.0. Remediation is available by upgrading affected packages to version 16.3.1.

CVE-2024-37300 at a Glance

CVE Identifier CVE-2024-37300
GHSA Identifier GHSA-gprj-3p75-f996
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-863: Incorrect Authorization
Affected Product Oauthenticator
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2024-37300

To remediate this vulnerability, upgrade all affected Oauthenticator dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

oauthenticator fixed: 16.3.1 
pip install oauthenticator>=16.3.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show oauthenticator

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-37300, inspect your installed packages using pip:

pip show oauthenticator

Analyze the terminal output to locate any version of Oauthenticator in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 16.3.1), your application is affected.

Note: The pip show oauthenticator command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Oauthenticator, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact JupyterHub < 5.0, when used with `GlobusOAuthenticator`, could be configured to allow all users from a particular institution only. The configuration for this would look like: ```python # Require users to be using the "foo.horse" identity provider, often an institution or university c.GlobusAuthenticator.identity_provider = "foo.horse" # Allow everyone who has that identity provider to log in c.GlobusAuthenticator.allow_all = True ``` 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](https://jupyterhub.readthedocs.io/en/stable/howto/upgrading-v5.html#authenticator-allow-all-and-allow-existing-users) in JupyterHub 5.0, but is likely to catch many users by surprise. ### Patches OAuthenticator 16.3.1 fixes the issue with JupyterHub 5.0, and does not affect previous versions. ### Workarounds Do not upgrade to JupyterHub 5.0 when using `GlobusOAuthenticator` in the prior configuration.

CVE-2024-37300 Affected Oauthenticator Versions

1 component(s)
Fixed Versions:
16.3.1
Product / Package Ecosystem Affected Versions Fixed Version
oauthenticator
pypi/oauthenticator
PyPI
< 16.3.1
16.3.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/jupyterhub/oauthenticator/security/advisories/GHSA-gprj-3p75-f996
NVD — CVE-2024-37300 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-37300
Security Fix Commit FIX COMMIT
https://github.com/jupyterhub/oauthenticator/commit/d1aea05fa89f2beae15ab0fa0b0d071030f79654
Oauthenticator Source Repository REPOSITORY
https://github.com/jupyterhub/oauthenticator
jupyterhub.readthedocs.io/en/stable/howto/upg... WEB
https://jupyterhub.readthedocs.io/en/stable/howto/upgrading-v5.html#authenticator-allow-all-and-allow-existing-users

Frequently Asked Questions

What is CVE-2024-37300?
CVE-2024-37300 is a security vulnerability in Oauthenticator involving Globus `identity_provider` restriction ignored when used with `allow_all` in JupyterHub 5.0 under CWE-863: Incorrect Authorization.
Which Oauthenticator versions are affected?
Affected versions include releases prior to 16.3.1 across affected packages: oauthenticator.
What version fixes CVE-2024-37300?
Upgrading to 16.3.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is oauthenticator affected?
Yes, oauthenticator is affected in releases prior to 16.3.1. Upgrade your dependency to 16.3.1 or later.
What is the CVSS score of CVE-2024-37300?
CVE-2024-37300 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2024-37300?
CVE-2024-37300 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check PyPI dependencies for CVE-2024-37300?
Run the dependency tree command: 'pip show oauthenticator'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gprj-3p75-f996",
  "modified" : "2024-06-12T19:24:05Z",
  "published" : "2024-06-12T17:13:07Z",
  "aliases" : [ "CVE-2024-37300" ],
  "summary" : "Globus `identity_provider` restriction ignored when used with `allow_all` in JupyterHub 5.0",
  "details" : "### Impact\n\nJupyterHub < 5.0, when used with `GlobusOAuthenticator`, could be configured to allow all users from a particular institution only. The configuration for this would look like:\n\n```python\n# Require users to be using the \"foo.horse\" identity provider, often an institution or university\nc.GlobusAuthenticator.identity_provider = \"foo.horse\"\n# Allow everyone who has that identity provider to log in\nc.GlobusAuthenticator.allow_all = True\n```\n\nThis worked fine prior to JupyterHub 5.0, because `allow_all` *did not* take precedence over `identity_provider`.\n\nSince 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.\n\nThis is a [documented change](https://jupyterhub.readthedocs.io/en/stable/howto/upgrading-v5.html#authenticator-allow-all-and-allow-existing-users) in JupyterHub 5.0,\nbut is likely to catch many users by surprise.\n\n### Patches\n\nOAuthenticator 16.3.1 fixes the issue with JupyterHub 5.0, and does not affect previous versions.\n\n### Workarounds\n\nDo not upgrade to JupyterHub 5.0 when using `GlobusOAuthenticator` in the prior configuration.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "oauthenticator"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "16.3.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/jupyterhub/oauthenticator/security/advisories/GHSA-gprj-3p75-f996"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-37300"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jupyterhub/oauthenticator/commit/d1aea05fa89f2beae15ab0fa0b0d071030f79654"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jupyterhub/oauthenticator"
  }, {
    "type" : "WEB",
    "url" : "https://jupyterhub.readthedocs.io/en/stable/howto/upgrading-v5.html#authenticator-allow-all-and-allow-existing-users"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-06-12T17:13:07Z",
    "nvd_published_at" : "2024-06-12T16:15:12Z"
  }
}