GHSA-fcr8-4r9f-r66m

Source

https://github.com/advisories/GHSA-fcr8-4r9f-r66m

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/01/GHSA-fcr8-4r9f-r66m/GHSA-fcr8-4r9f-r66m.json

JSON Data

https://api.test.osv.dev/v1/vulns/GHSA-fcr8-4r9f-r66m

Aliases

CVE-2025-23205

Published

2025-01-17T16:29:16Z

Modified

2025-01-17T21:56:51Z

Severity

8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

nbgrader's `frame-ancestors: self` grants all users access to formgrader

Details

Impact

Enabling frame-ancestors: 'self' grants any JupyterHub user the ability to extract formgrader content by sending malicious links to users with access to formgrader, at least when using the default JupyterHub configuration of enable_subdomains = False.

1915 disables a protection which would allow user Alice to craft a page embedding formgrader in an IFrame. If Bob visits that page, his credentials will be sent and the formgrader page loaded. Because Alice's page is on the same Origin as the formgrader iframe, Javasript on Alice's page has full access to the contents of the page served by formgrader using Bob's credentials.

Workarounds

Disable frame-ancestors: self, or
enable per-user and per-service subdomains with JupyterHub.enable_subdomains = True (then even if embedding in an IFrame is allowed, the host page does not have access to the contents of the frame).

References

JupyterHub documentation on why and when frame-ancestors: self is insecure, and why it was disabled by default: https://jupyterhub.readthedocs.io/en/stable/explanation/websecurity.html#:~:text=frame-ancestors

Database specific

{
    "nvd_published_at": "2025-01-17T21:15:11Z",
    "cwe_ids": [
        "CWE-1021",
        "CWE-668"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2025-01-17T16:29:16Z"
}

GHSA-fcr8-4r9f-r66m

Impact

Workarounds

References

Affected packages

PyPI / nbgrader

Package

Affected ranges

Affected versions

0.*