CVE-2020-26275 – jupyter-server

Package

Manager: pip
Name: jupyter-server
Vulnerable Version: >=0 <1.1.1

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

EPSS: 0.00344 pctl0.56347

Details

Jupyter Server open redirect vulnerability ### Impact _What kind of vulnerability is it? Who is impacted?_ Open redirect vulnerability - a maliciously crafted link to a jupyter server could redirect the browser to a different website. All jupyter servers running without a base_url prefix are technically affected, however, these maliciously crafted links can only be reasonably made for known jupyter server hosts. A link to your jupyter server may *appear* safe, but ultimately redirect to a spoofed server on the public internet. This same vulnerability was patched in upstream notebook v5.7.8. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Patched in jupyter_server 1.1.1. If upgrade is not available, a workaround can be to run your server on a url prefix: ``` jupyter server --ServerApp.base_url=/jupyter/ ``` ### References [OWASP page on open redirects](https://cheatsheetseries.owasp.org/cheatsheets/Unvalidated_Redirects_and_Forwards_Cheat_Sheet.html) ### For more information If you have any questions or comments about this advisory, or vulnerabilities to report, please email our security list [security@ipython.org](mailto:security@ipython.org). Credit: Yaniv Nizry from CxSCA group at Checkmarx

Metadata

Created: 2020-12-21T18:01:41Z
Modified: 2024-09-24T20:55:38Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/12/GHSA-9f66-54xg-pc2c/GHSA-9f66-54xg-pc2c.json
CWE IDs: ["CWE-601"]
Alternative ID: GHSA-9f66-54xg-pc2c
Finding: F156
Auto approve: 1