要点
- CVE-2023-48311 は dockerspawner, dockerspawner (jupyter) に影響する深刻度「中」 (CVSS 4.3) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.64%（全脆弱性の 50.6% より高い）。
- 対処：13.0.0, 13.0 以降に更新してください。
概要
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 の説明
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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