CVE-2023-41339 - CVE House

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Status published High CVE-2023-41339

Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF in GeoServer

8.6 CVSS

Vulnerability Description

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The WMS specification defines an ``sld=<url>`` parameter for GetMap, GetLegendGraphic and GetFeatureInfo operations for user supplied "dynamic styling". Enabling the use of dynamic styles, without also configuring URL checks, provides the opportunity for Service Side Request Forgery. This vulnerability can be used to steal user NetNTLMv2 hashes which could be relayed or cracked externally to gain further access. This vulnerability has been patched in versions 2.22.5 and 2.23.2.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from geoserver

View All →

GeoServer is vulnerable to an Unauthenticated XML External Entities (XXE) attack via WMS GetMap feature

GeoServer has a Server-Side Request Forgery (SSRF) Vulnerability in its XML Entity Resolution

GeoServer has an arbitrary file write vulnerability in its Master Password Dump Page

GeoTools, GeoServer, and GeoNetwork XML External Entity (XXE) Processing Vulnerability in XSD schema handling

GeoServer has an Infinite Loop Vulnerability in Jiffle process

Affected Vendor

geoserver

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Affected Software

geoserver

Vulnerable Versions:

< 2.22.5, >= 2.23.0, < 2.23.2

Timeline

Official Publish: October 24th, 2023

Last Modified: September 11th, 2024

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1213 Data from Information Repositories

T1005 Data from Local System

T1046 Network Service Discovery