CVE-2023-40170

Description

jupyter-server is the backend for Jupyter web applications. Improper cross-site credential checks on `/files/` URLs could allow exposure of certain file contents, or accessing files when opening untrusted files via "Open image in new tab". This issue has been addressed in commit `87a49272728` which has been included in release `2.7.2`. Users are advised to upgrade. Users unable to upgrade may use the lower performance `--ContentsManager.files_handler_class=jupyter_server.files.handlers.FilesHandler`, which implements the correct checks.

How to fix CVE-2023-40170

To remediate CVE-2023-40170, upgrade the affected package to a fixed version below.

• —no fix listed
• —upgrade to 2.7.2 or later
• —upgrade to 87a4927272819f0b1cae1afa4c8c86ee2da002fd or later

Is CVE-2023-40170 being exploited?

Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0
• from 0, < 2.7.2
• from 0, < 87a4927272819f0b1cae1afa4c8c86ee2da002fd | from 0, < 2.7.2

CVSS scores

References (8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-40170
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2023-40170
• PATCHgithub.com/jupyter-server/jupyter_server
• WEBgithub.com/jupyter-server/jupyter_server/commit/87a4927272819f0b1cae1afa4c8c86ee2da002fd