What is CVE-2023-48311?

CVE-2023-48311 is a high-severity vulnerability in Jupyter Dockerspawner, classified under Improper Input Validation. CVSS score: 8.0/10. Published 2023-12-08.

How severe is CVE-2023-48311?

High severity. CVSS v3 base score is 8.0 out of 10.

Improper input validation in Jupyter Dockerspawner

CVE-2023-48311

dockerspawner is a tool to spawn JupyterHub single user servers in Docker containers. Users of JupyterHub deployments running DockerSpawner starting with 0.11.0 without specifying `DockerSpawner.allowed_images` configuration allow users to launch _any_ pullable docker image, instead of restricting to only the single configured image, as intended. This issue has been addressed in commit `3ba4b665b` which has been included in dockerspawner release version 13. Users are advised to upgrade. Users unable to upgrade should explicitly set `DockerSpawner.allowed_images` to a non-empty list containing only the default image will result in the intended default behavior.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.006 (46.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Jupyter Dockerspawner
Jupyterhub Dockerspawner — versions >= 0.11.0, < 13.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2023-48311?: CVE-2023-48311 is a high-severity vulnerability in Jupyter Dockerspawner, classified under Improper Input Validation. CVSS score: 8.0/10. Published 2023-12-08.
How severe is CVE-2023-48311?: High severity. CVSS v3 base score is 8.0 out of 10.