Home/CVE/GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The WMS
CVE

CVE-2023-41339

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The WMS

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.

HIGH · CVSS 8.6 EPSS 0.00218
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-918Server-Side Request Forgery (SSRF)
CWE-918Server-Side Request Forgery (SSRF)
▤

Affected Products & Versions

2
osgeo geoserver< 2.22.5
osgeo geoserver>= 2.23.0 and < 2.23.2
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.geoserver.web:gs-web-app MODERATE fixed in 2.22.5
Maven org.geoserver:gs-wms MODERATE fixed in 2.22.5
▣

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD25 Oct 2023 · 06:17 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/geoserver/geoserver/releases/tag/2.22.5Release Notes
https://github.com/geoserver/geoserver/releases/tag/2.23.2Release Notes
https://github.com/geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmfMitigationVendor Advisory
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