CVE-2025-40660
📋 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 URL parameters. This affects all organizations using vulnerable versions of DM Corporative CMS, potentially exposing sensitive administrative functions and data.
💻 Affected Systems
- DM Corporative CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of administrative functions, unauthorized access to sensitive data, privilege escalation, and potential lateral movement within the system.
Likely Case
Unauthorized access to administrative interfaces, exposure of sensitive configuration data, and potential manipulation of CMS content.
If Mitigated
Limited impact with proper authentication controls, but still represents an authentication bypass vulnerability.
🎯 Exploit Status
Exploitation requires simple URL parameter manipulation without authentication. The vulnerability is publicly documented with specific exploitation details.
🛠️ 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 patch details. 2. Apply the latest security update from DM Corporative. 3. Restart the web application service. 4. Verify the fix by testing the vulnerable endpoint.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock requests to the vulnerable endpoint with specific parameter patterns
WAF specific - configure rule to block: /administer/select node/data.asp?mode=catalogue&id1=1&id2=1session=&cod=1&networks=0 with option parameter values 0,1,2
Access Restriction
allRestrict access to the vulnerable endpoint using network controls
iptables -A INPUT -p tcp --dport 80 -m string --string "/administer/select" --algo bm -j DROP
netsh advfirewall firewall add rule name="Block DM CMS Vuln" dir=in action=block program="%SystemRoot%\System32\inetsrv\w3wp.exe" remoteip=any
🧯 If You Can't Patch
- Implement strict authentication and authorization checks for all administrative endpoints
- Deploy a web application firewall with rules specifically blocking exploitation patterns for this vulnerability
🔍 How to Verify
Check if Vulnerable:
Attempt to access /administer/select node/data.asp?mode=catalogue&id1=1&id2=1session=&cod=1&networks=0 with option=0,1,2 parameters. If access is granted without proper authentication, the system is vulnerable.Check Version:
Check CMS version in administrative interface or consult vendor documentation for version identification methods.Verify Fix Applied:
Repeat the vulnerable URL access attempts. Proper authentication should now be required, and unauthorized access attempts should be blocked or redirected to login.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful access to /administer/select node/data.asp
- Access to administrative endpoints from unexpected IP addresses
- URL parameters containing option=0, option=1, or option=2 in requests to the vulnerable endpoint
Network Indicators:
- Unusual traffic patterns to administrative endpoints
- HTTP requests with manipulated parameter values bypassing authentication
SIEM Query:
source="web_server" AND (url="/administer/select node/data.asp" AND (param="option=0" OR param="option=1" OR param="option=2"))