CVE-2023-41339
published 2023-10-25CVE-2023-41339: 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=``…
PriorityP429medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
0.51%
39.8th percentile
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=`` 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.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| geoserver | geoserver | < 2.22.5 | 2.22.5 |
| geoserver | geoserver | — | — |
| osgeo | geoserver | < 2.22.5 | 2.22.5 |
| osgeo | geoserver | >= 2.23.0 < 2.23.2 | 2.23.2 |
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OSV
Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF
osv·2023-10-24
CVE-2023-41339 [MEDIUM] Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF
Unsecured WMS dynamic styling sld= parameter affords blind unauthenticated SSRF
### Summary
The WMS specification defines an ``sld=`` 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.
It is possible to use this for "Blind SSRF" on the WMS endpoint to steal NetNTLMv2 hashes via file requests to malicious servers.
### Details
This vulnerability requires:
* WMS Settings dynamic styling being enabled
* Security URL checks to be disabled, or to be enabled and allowing ``file:\\*`` access
### Impact
This vulnerability can be used to steal user NetNTLMv2 hashes which could be relayed or cracked externall
GHSA
Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF
ghsa·2023-10-24
CVE-2023-41339 [MEDIUM] CWE-918 Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF
Unsecured WMS dynamic styling sld= parameter affords blind unauthenticated SSRF
### Summary
The WMS specification defines an ``sld=`` 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.
It is possible to use this for "Blind SSRF" on the WMS endpoint to steal NetNTLMv2 hashes via file requests to malicious servers.
### Details
This vulnerability requires:
* WMS Settings dynamic styling being enabled
* Security URL checks to be disabled, or to be enabled and allowing ``file:\\*`` access
### Impact
This vulnerability can be used to steal user NetNTLMv2 hashes which could be relayed or cracked externall
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/geoserver/geoserver/releases/tag/2.22.5https://github.com/geoserver/geoserver/releases/tag/2.23.2https://github.com/geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmfhttps://github.com/geoserver/geoserver/releases/tag/2.22.5https://github.com/geoserver/geoserver/releases/tag/2.23.2https://github.com/geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmf
2023-10-25
Published