CVE-2025-25759
📋 TL;DR
This vulnerability in SUCMS v1.0 allows attackers to perform directory traversal and delete arbitrary files via crafted GET requests to admin_template.php. Attackers can delete critical system files, potentially causing service disruption or complete system compromise. All SUCMS v1.0 installations with the vulnerable component are affected.
💻 Affected Systems
- SUCMS
📦 What is this software?
Sucms by Sucms Project
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through deletion of critical OS files, leading to permanent data loss, system instability, or complete service outage requiring full system restoration.
Likely Case
Deletion of web application files causing service disruption, loss of website functionality, or deletion of configuration files leading to authentication bypass or privilege escalation.
If Mitigated
Limited impact to non-critical files if proper file permissions and web server configurations are in place, with potential for minor service disruption.
🎯 Exploit Status
Exploitation requires crafting specific GET requests with directory traversal sequences. No public exploit code identified in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - check vendor for updated version
Vendor Advisory: Not provided in references
Restart Required: No
Instructions:
1. Contact SUCMS vendor for patched version. 2. Replace admin_template.php with patched version. 3. Validate fix by testing directory traversal attempts. 4. Monitor logs for exploitation attempts.
🔧 Temporary Workarounds
Restrict access to admin_template.php
allImplement access controls to limit who can access the vulnerable component
# Add to .htaccess for Apache:
<Files "admin_template.php">
Order Deny,Allow
Deny from all
Allow from 192.168.1.0/24
</Files>
# For Nginx:
location ~ /admin_template\.php$ {
allow 192.168.1.0/24;
deny all;
}
Implement input validation
allAdd input sanitization to prevent directory traversal sequences
# In PHP, add to admin_template.php:
$input = $_GET['parameter'];
if (strpos($input, '../') !== false || strpos($input, '..\\') !== false) {
die('Invalid input');
}
🧯 If You Can't Patch
- Implement strict file permissions (chmod 644 for files, 755 for directories) to limit deletion capabilities
- Deploy web application firewall (WAF) with directory traversal protection rules
🔍 How to Verify
Check if Vulnerable:
Test by attempting to access admin_template.php with directory traversal parameters like ?file=../../../etc/passwd and observing if file operations occurCheck Version:
Check SUCMS version in configuration files or admin interfaceVerify Fix Applied:
Attempt same directory traversal tests after applying fixes - should receive error messages or be blocked from accessing files outside web root📡 Detection & Monitoring
Log Indicators:
- GET requests to admin_template.php containing '../' or '..\\' sequences
- File deletion operations in web server logs
- 404 errors for system files that shouldn't be accessed via web
Network Indicators:
- Unusual patterns of requests to admin_template.php with long parameter values
- Multiple failed file access attempts followed by successful deletions
SIEM Query:
source="web_server_logs" AND uri="*admin_template.php*" AND (query="*../*" OR query="*..\\*")