Description
GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The GeoServer security mechanism can perform an unchecked JNDI lookup, which in turn can be used to perform class deserialization and result in arbitrary code execution. The same can happen while configuring data stores with data sources located in JNDI, or while setting up the disk quota mechanism. In order to perform any of the above changes, the attack needs to have obtained admin rights and use either the GeoServer GUI, or its REST API. The lookups are going to be restricted in GeoServer 2.21.0, 2.20.4, 1.19.6. Users unable to upgrade should restrict access to the `geoserver/web` and `geoserver/rest` via a firewall and ensure that the GeoWebCache is not remotely accessible.
Remediation
References
https://github.com/geoserver/geoserver/security/advisories/GHSA-4pm3-f52j-8ggh
Related Vulnerabilities
CVE-2019-16775 Vulnerability in npm package npm
CVE-2018-11040 Vulnerability in maven package org.springframework:spring-web
CVE-2023-43123 Vulnerability in maven package org.apache.storm:storm-pmml-examples
CVE-2022-37724 Vulnerability in maven package wonder.utilities:utilities
CVE-2021-32622 Vulnerability in npm package matrix-react-sdk