CVE-2023-48311 Any image allowed by default
Default configuration allows users to launch arbitrary Docker images, potentially leading to code execution or privilege escalation in JupyterHub deployments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-48311?
CVE-2023-48311 is a high-severity vulnerability in jupyterhub dockerspawner, published on 8 Dec 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-20
Which versions are affected by CVE-2023-48311?
3 open source packages ship an affected version, including dockerspawner. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
dockerspawner PyPI | From 0.11.0 | 13.0.0 |
dockerspawner PyPI | From 0.11.0 | 13.0.0 |
dockerspawner PyPI | From 0.11.0 | 13.0.0 |
Products include Jupyter Dockerspawner.
How do I fix CVE-2023-48311?
Upgrade dockerspawner to 13.0.0 or later.
Is CVE-2023-48311 being exploited?
There is no known exploitation of CVE-2023-48311 in the wild and no public exploit code.
Sources
Also known as GHSA-hfgr-h3vc-p6c2, PYSEC-2026-1312.