CVE-2023-41339

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

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.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.13%
Vendor Advisory github.com
Affected: geoserver geoserver
Published at:
Updated at:

References

Link Tags
https://github.com/geoserver/geoserver/security/advisories/GHSA-cqpc-x2c6-2gmf mitigation vendor advisory
https://github.com/geoserver/geoserver/releases/tag/2.22.5 release notes
https://github.com/geoserver/geoserver/releases/tag/2.23.2 release notes

Frequently Asked Questions

What is the severity of CVE-2023-41339?
CVE-2023-41339 has been scored as a high severity vulnerability.
How to fix CVE-2023-41339?
To fix CVE-2023-41339, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-41339 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-41339 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-41339?
CVE-2023-41339 affects geoserver geoserver.
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