CVE-2025-25247
📋 TL;DR
This CVE describes a cross-site scripting (XSS) vulnerability in Apache Felix Webconsole that allows attackers to inject malicious scripts into web pages. The vulnerability affects versions 4.x up to 4.9.8 and 5.x up to 5.0.8. Successful exploitation could lead to session hijacking, credential theft, or unauthorized actions.
💻 Affected Systems
- Apache Felix Webconsole
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, hijack sessions, perform unauthorized administrative actions, or deploy malware to users accessing the webconsole.
Likely Case
Session hijacking or credential theft leading to unauthorized access to the Felix Webconsole management interface.
If Mitigated
Limited impact if proper input validation and output encoding are implemented at application layer, though the underlying vulnerability remains.
🎯 Exploit Status
XSS vulnerabilities typically have low exploitation complexity, but successful exploitation requires user interaction with the malicious payload.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.9.10 or 5.0.10 or higher
Vendor Advisory: https://lists.apache.org/thread/z47jbf0rbylzd0ktfzdw9c8b5fpyl24m
Restart Required: Yes
Instructions:
1. Download Apache Felix Webconsole version 4.9.10 or 5.0.10 or higher from official Apache repositories. 2. Replace the existing webconsole bundle with the patched version. 3. Restart the OSGi framework to load the updated bundle.
🔧 Temporary Workarounds
Input Validation Filter
allImplement a servlet filter to sanitize user input before processing by the webconsole
Implement custom servlet filter with input validation logic
Content Security Policy
allImplement strict CSP headers to mitigate XSS impact
Add 'Content-Security-Policy: default-src 'self'; script-src 'self'' to HTTP headers
🧯 If You Can't Patch
- Restrict network access to the Felix Webconsole to trusted IP addresses only
- Implement web application firewall (WAF) rules to detect and block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check the Felix Webconsole version via the web interface or by examining the bundle version in the OSGi consoleCheck Version:
Access Felix Webconsole interface and check version in footer or use OSGi console command: 'lb | grep org.apache.felix.webconsole'Verify Fix Applied:
Verify the installed version is 4.9.10+ or 5.0.10+ and test XSS payloads are properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript payloads in HTTP requests
- Multiple failed XSS attempts in access logs
Network Indicators:
- HTTP requests containing script tags or JavaScript payloads to webconsole endpoints
SIEM Query:
source="webconsole_access.log" AND ("<script>" OR "javascript:" OR "onload=" OR "onerror=")