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CVE-2023-41339— Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF in GeoServer

Quick assessment

Affected
geoserver geoserver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GeoServer是一个用 Java 编写的开源软件服务器。允许用户共享和编辑地理空间数据。 GeoServer 2.22.5之前的2.22.x版本和2.23.2之前的2.23.x版本存在安全漏洞，该漏洞源于允许用户共享和编辑地理空间数据。

CVSS 8.6 · High EPSS 0.51% · P42
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I. Basic Information for CVE-2023-41339

Vulnerability Information
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Vulnerability Title
Unsecured WMS dynamic styling sld=<url> parameter affords blind unauthenticated SSRF in GeoServer
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
GeoServer 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GeoServer是一个用 Java 编写的开源软件服务器。允许用户共享和编辑地理空间数据。 GeoServer 2.22.5之前的2.22.x版本和2.23.2之前的2.23.x版本存在安全漏洞，该漏洞源于允许用户共享和编辑地理空间数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
geoserver geoserver < 2.22.5 -

II. Public POCs for CVE-2023-41339

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III. Intelligence Information for CVE-2023-41339

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Vendor Advisories for CVE-2023-41339 (1)

Other References for CVE-2023-41339 (2)

IV. Related Vulnerabilities

Same product: geoserver
Same vendor: geoserver
Same weakness: CWE-918

V. Comments for CVE-2023-41339

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