GeoServer < 2.22.5 / 2.23.2: ServerSide Request Forgery via WPS GET/POST
CVE-2023-43795 Published on October 25, 2023

WPS Server Side Request Forgery in GeoServer
GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests. This presents the opportunity for Server Side Request Forgery. This vulnerability has been patched in version 2.22.5 and 2.23.2.

Github Repository NVD

Vulnerability Analysis

CVE-2023-43795 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
LOW
Availability Impact:
LOW

Weakness Type

What is a SSRF Vulnerability?

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.

CVE-2023-43795 has been classified to as a SSRF vulnerability or weakness.


Products Associated with CVE-2023-43795

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Osgeo Geoserver
 

Affected Versions

geoserver:

Vulnerable Packages

The following package name and versions may be associated with CVE-2023-43795

Package Manager Vulnerable Package Versions Fixed In
maven org.geoserver.extension:gs-wps-core < 2.22.5 2.22.5
maven org.geoserver.extension:gs-wps-core >= 2.23.0, < 2.23.2 2.23.2

Exploit Probability

EPSS
89.49%
Percentile
99.57%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.