Kurz gesagt
- CVE-2023-48311 ist eine Schwachstelle (MITTEL (CVSS 4.3)) in dockerspawner, dockerspawner (jupyter).
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.64%, höher als bei 50.6% aller Schwachstellen.
- Abhilfe: auf 13.0.0, 13.0 oder neuer aktualisieren.
Description
Impact
Users of JupyterHub deployments running DockerSpawner starting with 0.11.0 without specifying DockerSpawner.allowed_images configuration allow users to launch any pullable image, instead of restricting to only the single configured image, as intended.
Patches
Upgrade to DockerSpawner 13.
Workarounds
Explicitly setting DockerSpawner.allowed_images to a non-empty list containing only the default image will result in the intended default behavior:
c.DockerSpawner.image = "your-image"
c.DockerSpawner.allowed_images = ["your-image"]
NVD 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.
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