CVE-2025-11221
📋 TL;DR
This vulnerability in GTONE ChangeFlow allows attackers to upload malicious files and traverse directory paths to access restricted areas. It affects all versions through v9.0.1.1, potentially compromising the entire application and underlying system.
💻 Affected Systems
- GTONE ChangeFlow
⚠️ 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 system compromise allowing remote code execution, data exfiltration, and lateral movement within the network.
Likely Case
Unauthorized file upload leading to web shell deployment, sensitive data access, and potential privilege escalation.
If Mitigated
Limited impact with proper file upload restrictions and directory access controls in place.
🎯 Exploit Status
Path traversal combined with file upload vulnerabilities are commonly exploited with simple tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://www.gtone.co.kr/kr/application-lifecycle-management.php
Restart Required: No
Instructions:
Contact GTONE for patch availability and upgrade instructions. Monitor vendor advisory for updates.
🔧 Temporary Workarounds
Restrict File Upload Types
allConfigure web server to block upload of executable file types (.php, .jsp, .asp, .exe, etc.)
# Configure in web server (Apache example):
<FilesMatch "\.(php|jsp|asp|exe|dll|sh|py)$">
Order Allow,Deny
Deny from all
</FilesMatch>
Implement Path Validation
allAdd server-side validation to restrict file paths to allowed directories only
# Example input validation pseudocode:
# Validate uploaded file path doesn't contain ../ or absolute paths
🧯 If You Can't Patch
- Isolate ChangeFlow server in restricted network segment with strict firewall rules
- Implement web application firewall (WAF) with path traversal and file upload protection rules
🔍 How to Verify
Check if Vulnerable:
Check ChangeFlow version in admin interface or configuration files. If version is ≤9.0.1.1, system is vulnerable.Check Version:
# Check version in ChangeFlow web interface or configuration filesVerify Fix Applied:
Verify upgrade to version >9.0.1.1 and test file upload functionality with malicious payloads.📡 Detection & Monitoring
Log Indicators:
- Multiple failed file upload attempts
- Unusual file paths in upload requests
- Requests containing ../ patterns
- Upload of executable file types
Network Indicators:
- HTTP POST requests to upload endpoints with suspicious filenames
- Traffic patterns indicating file upload exploitation
SIEM Query:
source="web_server" AND (uri="*upload*" OR uri="*file*" OR uri="*save*") AND (filename="*.php" OR filename="*.jsp" OR filename="*.asp" OR filename="*.exe" OR request="*../*")