Protect Your GeoNode Data: SSRF Vulnerability Allows Access to Internal Network

CVECVE-2023-42439
CVSScvssV3_1: 7.5
SourceCVE-2023-42439

GeoNode, an open source platform for sharing geospatial data, is affected by a vulnerability that allows unauthorized access to internal networks.

A Server-Side Request Forgery (SSRF) flaw exists starting in version 3.2.0 that bypasses the application’s controls. This vulnerability can be exploited to make requests to internal services and read any accessible data on the private network.

While GeoNode implements a whitelist of allowed external domains, attackers can trick the application into thinking the request is coming from a trusted host. By using the `@` symbol, a malicious actor can direct the response to the GeoServer port on that host and retrieve private information.

This SSRF vulnerability essentially opens a window into the internal network for an attacker. Any data accessible to the server running GeoNode could potentially be exposed.

If you use GeoNode, update to version 4.1.3.post1 or later which contains a fix for this issue. Also review your server’s configuration and firewall rules to ensure only necessary inbound access is permitted. Monitoring networks for unusual outbound traffic can help detect exploitation attempts.

Staying up-to-date with software patches is the best way to protect against vulnerabilities like this. Regularly reviewing configurations and access controls also helps limit exposure and reduce risk to sensitive information and systems.

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