CVE-2023-40170
cross-site inclusion (XSSI) of files in jupyter-server
Impact
### Impact 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". ### Patches Jupyter Server 2.7.2 ### Workarounds Use lower performance `--ContentsManager.files_handler_class=jupyter_server.files.handlers.FilesHandler`, which implements the correct checks. ### References Upstream patch for CVE-2019-9644 was not applied completely, leaving part of the vulnerability open. Vulnerability reported by Tim Coen via the [bug bounty program](https://app.intigriti.com/programs/jupyter/jupyter/detail) [sponsored by the European Commission](https://commission.europa.eu/news/european-commissions-open-source-programme-office-starts-bug-bounties-2022-01-19_en) and hosted on the [Intigriti platform](https://www.intigriti.com/).
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | jupyter-server | < 2.7.2 | 2.7.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jupyter | Jupyter Server | before 2.7.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/jupyter-server/jupyter_server/commit/87a4927272819f0b1cae1afa4c8c86ee2da002fd
- https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-64x5-55rw-9974
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF/
- https://github.com/advisories/GHSA-64x5-55rw-9974
- https://nvd.nist.gov/vuln/detail/CVE-2023-40170
- https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server/PYSEC-2023-157.yaml