CVE-2024-23818: GeoServer Stored Cross-Site Scripting (XSS) vulnerability in WMS OpenLayers Format
Summary A stored cross-site scripting (XSS) vulnerability exists that enables an authenticated administrator with workspace-level privileges to store a JavaScript payload in the GeoServer catalog that will execute in the context of another user's browser when viewed in the WMS GetMap OpenLayers Output Format. Access to the WMS OpenLayers Format is available to all users by default although data and service security may limit users' ability to trigger the XSS.
Impact If an attacker can control a script that is executed in the victim's browser, then they can typically fully compromise that user. Amongst other things, the attacker can:
1 .Perform any action within the application that the user can perform. 2. View any information that the user is able to view. 3. Modify any information that the user is able to modify. 4. Initiate interactions with other application users, including malicious attacks, that will appear to originate from the initial victim user.
References https://osgeo-org.atlassian.net/browse/GEOS-11153 https://github.com/geoserver/geoserver/pull/7174
Other sources
GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 2.23.3 and 2.24.1 that enables an authenticated administrator with workspace-level privileges to store a JavaScript payload in the GeoServer catalog that will execute in the context of another user's browser when viewed in the WMS GetMap OpenLayers Output Format. Access to the WMS OpenLayers Format is available to all users by default although data and service security may limit users' ability to trigger the XSS. Versions 2.23.3 and 2.24.1 contain a patch for this issue.
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Frequently Asked Questions
What is the severity of CVE-2024-23818?
The severity of CVE-2024-23818 is classified as high due to the potential for stored cross-site scripting (XSS) attacks.
How do I fix CVE-2024-23818?
To fix CVE-2024-23818, upgrade to GeoServer versions 2.24.1 or 2.23.3 or later.
Who is affected by CVE-2024-23818?
CVE-2024-23818 affects users of GeoServer versions prior to 2.24.1 and 2.23.3, specifically those with workspace-level privileges.
What type of vulnerability is CVE-2024-23818?
CVE-2024-23818 is a stored cross-site scripting (XSS) vulnerability that allows execution of malicious JavaScript payloads.
What are the consequences of exploiting CVE-2024-23818?
Exploiting CVE-2024-23818 could allow an attacker to execute malicious scripts in the context of another user's browser.