CVE-2024-4300
📋 TL;DR
CVE-2024-4300 is a critical information disclosure vulnerability in E-WEBInformationCo. FS-EZViewer(Web) that exposes database configuration files containing credentials and connection details. Remote attackers can access these files without authentication, potentially gaining full database control. Organizations using this software are affected.
💻 Affected Systems
- E-WEBInformationCo. FS-EZViewer(Web)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise allowing data theft, destruction, or ransomware deployment across connected systems.
Likely Case
Attackers exfiltrate sensitive data, modify records, or establish persistence for future attacks.
If Mitigated
Limited impact if database is isolated, credentials are rotated, and access is restricted.
🎯 Exploit Status
Simple path traversal or direct URL access to configuration files; no special tools required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.twcert.org.tw/tw/cp-132-7774-fbd01-1.html
Restart Required: Yes
Instructions:
1. Contact vendor for patched version. 2. Apply update following vendor instructions. 3. Restart affected services. 4. Rotate database credentials.
🔧 Temporary Workarounds
Restrict web directory access
allBlock access to configuration file paths via web server configuration
For Apache: <LocationMatch "\.(config|ini|xml)$">
Require all denied
</LocationMatch>
For Nginx: location ~*\.(config|ini|xml)$ {
deny all;
}
Move configuration files
linuxRelocate sensitive configuration files outside web-accessible directories
mv /var/www/html/config/database.conf /etc/fs-ezviewer/
Update application configuration to reference new path
🧯 If You Can't Patch
- Implement network segmentation to isolate FS-EZViewer from critical databases
- Deploy web application firewall (WAF) rules to block access to configuration file patterns
🔍 How to Verify
Check if Vulnerable:
Attempt to access /config/database.conf or similar configuration files via web browser or curl without authenticationCheck Version:
Check application interface or documentation for version informationVerify Fix Applied:
Verify configuration files are no longer accessible via web interface and test application functionality📡 Detection & Monitoring
Log Indicators:
- HTTP 200 responses for configuration file requests
- Unusual database connection attempts from web server IP
Network Indicators:
- GET requests for .conf, .ini, or .xml files in web paths
- Sudden database traffic spikes from application server
SIEM Query:
source="web_logs" AND (uri="*.conf" OR uri="*.ini" OR uri="*.xml") AND response="200"