CVE-2024-38524 Overview
CVE-2024-38524 is an information disclosure vulnerability in GeoServer, an open source server for sharing and editing geospatial data. The flaw resides in org.geowebcache.GeoWebCacheDispatcher.handleFrontPage(HttpServletRequest, HttpServletResponse), which lacks checks to hide potentially sensitive information from unauthenticated users. By default, the front page exposes internal storage locations unless an administrator sets a hidden system property to suppress them. Remote attackers can query the dispatcher over the network without authentication to harvest infrastructure details. The issue is tracked under [CWE-200] (Exposure of Sensitive Information to an Unauthorized Actor) and is fixed in GeoServer versions 2.26.2 and 2.25.6.
Critical Impact
Unauthenticated network attackers can retrieve internal GeoWebCache storage paths and configuration data, enabling reconnaissance for follow-on attacks against GeoServer deployments.
Affected Products
- OSGeo GeoServer versions prior to 2.25.6
- OSGeo GeoServer 2.26.x versions prior to 2.26.2
- GeoWebCache component bundled within affected GeoServer releases
Discovery Timeline
- 2025-06-10 - CVE-2024-38524 published to NVD
- 2025-08-26 - Last updated in NVD database
Technical Details for CVE-2024-38524
Vulnerability Analysis
The vulnerability resides in the GeoWebCache dispatcher servlet that renders the front page of the caching subsystem. The handleFrontPage method composes HTML output that includes runtime configuration details, including the on-disk storage location used by GeoWebCache. The method does not enforce authentication or role-based checks before rendering this information. An attacker reaching the dispatcher endpoint over HTTP receives the full response without credentials.
GeoServer ships with a system property intended to mask the storage location, but this property defaults to showing the paths. Operators who deploy default configurations therefore expose internal file system layout to any client that can reach the web interface. Disclosed paths often reveal operating system, deployment directory structure, and tenant naming conventions. Attackers can use this data to craft targeted path traversal, deserialization, or supply chain attacks against the same host.
Root Cause
The root cause is missing access control combined with an insecure default configuration. The handleFrontPage method emits storage location strings without consulting authorization context, and the toggle that hides this data is opt-in rather than opt-out.
Attack Vector
Exploitation requires only network reach to the GeoServer HTTP interface. The attacker issues an unauthenticated GET request to the GeoWebCache front page route and parses the returned HTML for storage paths and configuration metadata. No user interaction or privileges are required.
No verified public exploit code is available for CVE-2024-38524. Refer to the GitHub Security Advisory GHSA-jm79-7xhw-6f6f and the GeoWebCache pull request #1345 for the fix details.
Detection Methods for CVE-2024-38524
Indicators of Compromise
- Unauthenticated HTTP GET requests to the GeoWebCache dispatcher front page from external IP ranges
- HTTP responses from /geoserver/gwc or equivalent paths containing absolute file system paths in the HTML body
- Repeated access patterns to GeoWebCache endpoints from scanning infrastructure or known reconnaissance tools
Detection Strategies
- Inspect web access logs for anonymous requests to GeoWebCache dispatcher URLs and correlate with user-agent strings associated with scanners
- Deploy web application firewall rules that flag outbound responses containing local path patterns such as /var/, C:\\, or deployment-specific directory names
- Compare installed GeoServer version against fixed releases 2.26.2 and 2.25.6 using software inventory tooling
Monitoring Recommendations
- Monitor egress traffic from GeoServer hosts for unusual response sizes on GeoWebCache endpoints
- Alert on configuration drift when the storage-location hiding system property is unset on production instances
- Track subsequent reconnaissance activity such as path traversal attempts targeting disclosed directories
How to Mitigate CVE-2024-38524
Immediate Actions Required
- Upgrade GeoServer to version 2.26.2 or 2.25.6 or later as published in the vendor advisory
- Set the hidden system property that suppresses storage location display on all GeoWebCache instances until patching is complete
- Restrict network access to the GeoServer administrative and GeoWebCache endpoints to trusted management networks
Patch Information
GeoServer releases 2.26.2 and 2.25.6 remove sensitive storage information from the GeoWebCache front page. The upstream fixes are tracked in GeoWebCache Pull Request #1345, GeoServer Pull Request #8189, and OSGeo Jira ticket GEOS-11677.
Workarounds
- Enable the GeoWebCache system property that hides storage locations on the front page rendering path
- Place a reverse proxy in front of GeoServer to require authentication for /gwc routes and strip sensitive response content
- Block external access to the GeoWebCache dispatcher endpoints at the network firewall until upgrade is complete
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
