CVE-2023-40170

cross-site inclusion (XSSI) of files in jupyter-server

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.

Categories

4.6
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.83% Top 30%
Vendor Advisory github.com
Affected: jupyter-server jupyter_server
Published at:
Updated at:

References

Link Tags
https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-64x5-55rw-9974 vendor advisory
https://github.com/jupyter-server/jupyter_server/commit/87a4927272819f0b1cae1afa4c8c86ee2da002fd patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ/

Frequently Asked Questions

What is the severity of CVE-2023-40170?
CVE-2023-40170 has been scored as a medium severity vulnerability.
How to fix CVE-2023-40170?
To fix CVE-2023-40170, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-40170 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-40170 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-40170?
CVE-2023-40170 affects jupyter-server jupyter_server.
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