CVE-2022-21697: SSRF vulnerability (requires authentication)
First published: Tue Jan 25 2022(Updated: )
### Impact **What kind of vulnerability is it?** Server-Side Request Forgery ( SSRF ) **Who is impacted?** Any user deploying Jupyter Server or Notebook with jupyter-proxy-server extension enabled. A lack of input validation allowed authenticated clients to proxy requests to other hosts, bypassing the `allowed_hosts` check. Because authentication is required, which already grants permissions to make the same requests via kernel or terminal execution, this is considered low to moderate severity. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Upgrade to 3.2.1, or apply the patch https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch ### For more information If you have any questions or comments about this advisory: * Open a topic [on our forum](https://discourse.jupyter.org) * Email the Jupyter security team at [security@ipython.org](mailto:security@ipython.org)
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Jupyter Jupyter Server Proxy | <3.2.1 | |
| pip/jupyter-server-proxy | <=3.2.0 | 3.2.1 |
Remedy
https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99eb
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Reference Links
- https://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99eb
- https://github.com/jupyterhub/jupyter-server-proxy/compare/v3.2.0...v3.2.1.patch
- https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-gcv9-6737-pjqw
- https://nvd.nist.gov/vuln/detail/CVE-2022-21697
- https://github.com/pypa/advisory-database/tree/main/vulns/jupyter-server-proxy/PYSEC-2022-16.yaml
- https://github.com/advisories/GHSA-gcv9-6737-pjqw (Advisory)
Frequently Asked Questions
What is CVE-2022-21697?
CVE-2022-21697 is a vulnerability in Jupyter Server Proxy, a Jupyter notebook server extension, that allows for Server-Side Request Forgery (SSRF).
How does CVE-2022-21697 affect Jupyter Server Proxy?
CVE-2022-21697 affects Jupyter Server Proxy version up to 3.2.1.
What is Server-Side Request Forgery (SSRF)?
Server-Side Request Forgery (SSRF) is a vulnerability that allows an attacker to send crafted requests from a vulnerable server, potentially leading to unauthorized access or data exfiltration from internal systems.
What is the severity of CVE-2022-21697?
The severity of CVE-2022-21697 is high, with a CVSS score of 7.1.
How can I fix CVE-2022-21697 in Jupyter Server Proxy?
To fix CVE-2022-21697, update Jupyter Server Proxy to version 3.2.1 or higher.
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