CVE-2020-26215: Open redirect in Jupyter Notebook
First published: Wed Nov 18 2020(Updated: )
### Impact _What kind of vulnerability is it? Who is impacted?_ Open redirect vulnerability - a maliciously crafted link to a notebook server could redirect the browser to a different website. All notebook servers are technically affected, however, these maliciously crafted links can only be reasonably made for known notebook server hosts. A link to your notebook server may *appear* safe, but ultimately redirect to a spoofed server on the public internet. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Patched in notebook 6.1.5 ### 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: zhuonan li of Alibaba Application Security Team
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Jupyter Notebook | <6.1.5 | |
| Debian Debian Linux | =9.0 | |
| pip/notebook | <=6.1.4 | 6.1.5 |
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Reference Links
- https://github.com/jupyter/notebook/commit/3cec4bbe21756de9f0c4bccf18cf61d840314d74
- https://github.com/jupyter/notebook/security/advisories/GHSA-c7vm-f5p4-8fqh
- https://lists.debian.org/debian-lts-announce/2020/12/msg00004.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/192135
- https://www.ibm.com/support/pages/node/6520510 (Advisory)
- https://nvd.nist.gov/vuln/detail/CVE-2020-26215
- https://github.com/pypa/advisory-database/tree/main/vulns/notebook/PYSEC-2020-215.yaml
- https://github.com/advisories/GHSA-c7vm-f5p4-8fqh (Advisory)
Frequently Asked Questions
What is the vulnerability ID for this Jupyter Notebook vulnerability?
The vulnerability ID for this Jupyter Notebook vulnerability is CVE-2020-26215.
What is the impact of CVE-2020-26215?
CVE-2020-26215 could allow a remote attacker to conduct phishing attacks by exploiting an open redirect vulnerability, potentially redirecting victims to arbitrary websites.
How severe is CVE-2020-26215?
CVE-2020-26215 has a severity rating of 7.4, which is considered high.
How can an attacker exploit CVE-2020-26215?
An attacker can exploit CVE-2020-26215 by using a specially-crafted URL to redirect a victim to arbitrary websites.
Is there a fix available for CVE-2020-26215?
At the moment, there is no official fix available for CVE-2020-26215, so it is recommended to stay updated with the latest security patches and follow best practices to mitigate the risk.
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