#VU60081 Server-Side Request Forgery (SSRF) in Jupyter Server Proxy - CVE-2022-21697

Vulnerability identifier: #VU60081

Vulnerability risk: Medium

CVSSv4.0: 4.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-21697

CWE-ID: CWE-918

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Jupyter Server Proxy
Server applications / Other server solutions

Vendor: jupyterhub

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input. A remote authenticated attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Jupyter Server Proxy: 0.2.0 - 3.2.0

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External links
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://github.com/jupyterhub/jupyter-server-proxy/commit/fd31930bacd12188c448c886e0783529436b99eb

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.