#VU80845 Server-Side Request Forgery (SSRF) in GeoNode - CVE-2023-42439

Vulnerability identifier: #VU80845

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2023-42439

CWE-ID: CWE-918

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GeoNode
Web applications / CMS

Vendor: GeoNode Development Team

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when processing the "@" character or it encoded value (e.g. %40). A remote 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.

Example:

GET /proxy/?url=http://development.demo.geonode.org%40geoserver:8080/geoserver/web

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

GeoNode: 3.2.0 - 4.1.2

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External links
https://github.com/GeoNode/geonode/security/advisories/GHSA-pxg5-h34r-7q8p

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.