CVE-2025-11103
📋 TL;DR
This vulnerability allows remote attackers to upload arbitrary files to the Projectworlds Online Tours and Travels 1.0 system via the /admin/change-image.php endpoint. Attackers can exploit this to upload malicious files like webshells, potentially gaining unauthorized access or control. Organizations using this specific software version are affected.
💻 Affected Systems
- Projectworlds Online Tours and Travels
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via webshell upload leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Unauthorized file upload leading to defacement, data exfiltration, or limited server compromise.
If Mitigated
File upload attempts are blocked or logged, preventing successful exploitation while maintaining system integrity.
🎯 Exploit Status
Exploit details are publicly available on GitHub, making this easily exploitable by attackers with basic skills.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or apply workarounds.
🔧 Temporary Workarounds
Restrict file uploads
allImplement server-side validation to only allow specific image file types (e.g., .jpg, .png) and check file signatures.
Disable vulnerable endpoint
allBlock or remove access to /admin/change-image.php via web server configuration or file deletion.
# Apache: Add to .htaccess
RewriteRule ^admin/change-image\.php$ - [F,L]
# Nginx: Add to server block
location ~ /admin/change-image\.php$ { deny all; }
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious file uploads.
- Restrict network access to the admin interface using IP whitelisting or VPN.
🔍 How to Verify
Check if Vulnerable:
Attempt to upload a non-image file (e.g., .php, .txt) to /admin/change-image.php and check if it's accepted.Check Version:
Check software documentation or configuration files for version information.Verify Fix Applied:
Test that file uploads are properly validated or the endpoint is inaccessible.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /admin/change-image.php
- Uploads of non-image file types
- Multiple failed upload attempts
Network Indicators:
- HTTP POST requests to /admin/change-image.php with suspicious file content
SIEM Query:
source="web_server" AND uri="/admin/change-image.php" AND method="POST"