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| Rule General Information |
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| Release Date: | 2025-04-02 | |
| Rule Name: | Jupyter Server proxy Server Side Request Forgery Vulnerability (CVE-2022-21697) | |
| Severity: | ||
| CVE ID: | ||
| Rule Protection Details |
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| Description: | Jupyter Server Proxy is a Jupyter notebook server extension to proxy web services. Versions of Jupyter Server Proxy prior to 3.2.1 are vulnerable to Server-Side Request Forgery (SSRF). Any user deploying Jupyter Server or Notebook with jupyter-proxy-server extension enabled is affected. A lack of input validation allows 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. Users may upgrade to version 3.2.1 to receive a patch or, as a workaround, install the patch manually. | |
| Impact: | SSRF is a security vulnerability constructed by an attacker to form a request initiated by a server. By exploiting this vulnerability, an attacker can bypass access restrictions such as firewalls, thereby using an infected or vulnerable server as a proxy for port scanning and even accessing internal system data. | |
| Affected OS: | Windows, Linux, Others | |
| Reference: | 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 |
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| Solutions |
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| Please refer to announcements or patches release by the vendor: https://github.com/jupyterhub/jupyter-server-proxy/security/advisories/GHSA-gcv9-6737-pjqw |