CVE-2025-40658
📋 TL;DR
An Insecure Direct Object Reference (IDOR) vulnerability in DM Corporative CMS allows attackers to bypass authentication and access private admin areas by manipulating the 'option' parameter in /administer/selectionnode/framesSelection.asp. This affects all organizations using vulnerable versions of DM Corporative CMS.
💻 Affected Systems
- DM Corporative CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the CMS admin interface leading to data theft, content manipulation, or further system exploitation.
Likely Case
Unauthorized access to administrative functions, potentially allowing content modification, user data exposure, or configuration changes.
If Mitigated
Limited impact if proper authentication and authorization controls are implemented alongside the vulnerable endpoint.
🎯 Exploit Status
Exploitation requires simple HTTP requests with parameter manipulation; no authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Latest security update from vendor
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-dm-corporative-cms-dmacroweb
Restart Required: Yes
Instructions:
1. Download the latest security patch from the vendor. 2. Apply the patch according to vendor instructions. 3. Restart the CMS service. 4. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock or sanitize requests to /administer/selectionnode/framesSelection.asp with option parameter values 0, 1, or 2.
Access Restriction
allRestrict access to the /administer/ directory to trusted IP addresses only.
🧯 If You Can't Patch
- Implement strict authentication and authorization checks for all admin endpoints
- Monitor and alert on unauthorized access attempts to /administer/selectionnode/framesSelection.asp
🔍 How to Verify
Check if Vulnerable:
Send HTTP requests to /administer/selectionnode/framesSelection.asp with option=0, option=1, and option=2 parameters. If you can access admin functions without proper authentication, the system is vulnerable.Check Version:
Check CMS version through admin interface or configuration files as per vendor documentation.Verify Fix Applied:
After patching, repeat the vulnerability check. Access should be denied or properly authenticated for the same requests.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /administer/selectionnode/framesSelection.asp with option parameter values 0, 1, or 2 from unauthorized sources
- Failed authentication attempts followed by successful admin access
Network Indicators:
- Unusual traffic patterns to admin endpoints
- Requests with manipulated parameter values
SIEM Query:
source_ip NOT IN trusted_ips AND url_path CONTAINS '/administer/selectionnode/framesSelection.asp' AND (query_string CONTAINS 'option=0' OR query_string CONTAINS 'option=1' OR query_string CONTAINS 'option=2')