CVE-2025-40656
📋 TL;DR
A critical SQL injection vulnerability in DM Corporative CMS allows attackers to manipulate database queries through the 'cod' parameter in /administer/node-selection/data.asp. This enables unauthorized database access, data theft, modification, or deletion. All organizations using vulnerable versions of DM Corporative CMS are affected.
💻 Affected Systems
- DM Corporative CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data destruction, credential theft, and potential lateral movement to other systems.
Likely Case
Data exfiltration, unauthorized data modification, and potential privilege escalation within the CMS.
If Mitigated
Limited impact if proper input validation and WAF rules are in place, though risk remains elevated.
🎯 Exploit Status
SQL injection vulnerabilities are commonly weaponized, and this one requires no authentication, making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched version
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-dm-corporative-cms-dmacroweb
Restart Required: Yes
Instructions:
1. Review vendor advisory for patched version
2. Backup database and application files
3. Apply vendor-provided patch or upgrade to fixed version
4. Restart web server and application services
5. Verify fix implementation
🔧 Temporary Workarounds
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns targeting the vulnerable endpoint
# Example ModSecurity rule: SecRule ARGS:cod "@detectSQLi" "id:1001,phase:2,deny,status:403"
Input Validation Filter
windowsImplement server-side input validation to sanitize the 'cod' parameter
# Example ASP sanitization: cod = Replace(Replace(Request("cod"), "'", "''"), "--", "")
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the CMS from critical databases
- Deploy database activity monitoring to detect unauthorized SQL queries
🔍 How to Verify
Check if Vulnerable:
Test the /administer/node-selection/data.asp endpoint with SQL injection payloads in the 'cod' parameterCheck Version:
Check CMS version in admin panel or application filesVerify Fix Applied:
Attempt SQL injection tests after patching; successful attacks should be blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple failed login attempts followed by SQL injection patterns
- Unexpected database queries from web application user
Network Indicators:
- SQL keywords in HTTP POST/GET parameters to vulnerable endpoint
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND (uri="/administer/node-selection/data.asp") AND (param="cod") AND (keywords="UNION", "SELECT", "INSERT", "DELETE", "UPDATE", "OR", "AND", "--", "'")