CVE-2025-1644
📋 TL;DR
This CSRF vulnerability in Benner ModernaNet allows attackers to trick authenticated users into performing unintended actions by manipulating the 'idItAg' parameter in the /DadosPessoais/SG_Gravar endpoint. It affects ModernaNet versions up to 1.2.0. Attackers can exploit this remotely without direct access to the target system.
💻 Affected Systems
- Benner ModernaNet
📦 What is this software?
Modernanet by Modernasistemas
⚠️ Risk & Real-World Impact
Worst Case
Attackers could manipulate personal data records, modify user permissions, or perform unauthorized administrative actions through authenticated user sessions.
Likely Case
Data integrity compromise where attackers modify or delete personal data records through CSRF attacks against authenticated users.
If Mitigated
Limited impact with proper CSRF protections, session management, and network segmentation in place.
🎯 Exploit Status
CSRF attacks typically require user interaction but are straightforward to implement once endpoint details are known.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.1
Vendor Advisory: Not provided in references
Restart Required: Yes
Instructions:
1. Backup current installation and data. 2. Download ModernaNet version 1.2.1 from official vendor source. 3. Follow vendor upgrade procedures. 4. Restart application services. 5. Verify functionality.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd anti-CSRF tokens to forms and validate them server-side
SameSite Cookie Attribute
allSet SameSite=Strict or Lax attributes on session cookies
Set-Cookie: session=value; SameSite=Strict; Secure; HttpOnly
🧯 If You Can't Patch
- Implement WAF rules to detect and block CSRF attempts on /DadosPessoais/SG_Gravar endpoint
- Use network segmentation to restrict access to ModernaNet from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Check application version in admin panel or configuration files. If version is ≤1.2.0, system is vulnerable.Check Version:
Check application configuration or admin interface for version informationVerify Fix Applied:
After upgrading to 1.2.1, test CSRF protection by attempting to submit requests without proper tokens to /DadosPessoais/SG_Gravar.📡 Detection & Monitoring
Log Indicators:
- Multiple failed POST requests to /DadosPessoais/SG_Gravar without referrer headers
- Unusual parameter manipulation in idItAg field
Network Indicators:
- Cross-origin requests to /DadosPessoais/SG_Gravar endpoint
- Requests lacking CSRF tokens or proper referrer validation
SIEM Query:
source="modernanet.log" AND uri="/DadosPessoais/SG_Gravar" AND (NOT referrer CONTAINS "expected-domain.com" OR csrf_token IS NULL)