CVE-2025-41348
📋 TL;DR
A critical SQL injection vulnerability in WinPlus v24.11.27 allows attackers to execute arbitrary SQL commands via specially crafted POST requests. This enables complete database manipulation including data theft, modification, and deletion. All organizations using the vulnerable WinPlus version are affected.
💻 Affected Systems
- WinPlus by Informática del Este
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data destruction, sensitive information exfiltration, and potential lateral movement to other systems.
Likely Case
Data theft, unauthorized data modification, and potential privilege escalation within the database.
If Mitigated
Limited impact if proper input validation and WAF rules block malicious requests.
🎯 Exploit Status
SQL injection via POST parameters is well-understood and easily weaponized. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/stored-cross-site-scripting-xss-winplus-informatica-del-este
Restart Required: No
Instructions:
Contact Informática del Este for patch information. Monitor their official channels for security updates.
🔧 Temporary Workarounds
Web Application Firewall Rules
allImplement WAF rules to block SQL injection patterns in POST requests to the vulnerable endpoint
Input Validation Filter
allAdd server-side input validation to sanitize 'val1' and 'cont' parameters before processing
🧯 If You Can't Patch
- Block external access to /WinplusPortal/ws/sWinplus.svc/json/getacumper_post endpoint at network perimeter
- Implement strict database user permissions and monitor for unusual SQL queries
🔍 How to Verify
Check if Vulnerable:
Test by sending a POST request with SQL injection payloads in 'val1' or 'cont' parameters to the vulnerable endpointCheck Version:
Check WinPlus version in application interface or configuration filesVerify Fix Applied:
Verify that SQL injection payloads no longer execute and return appropriate error messages📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple POST requests to the vulnerable endpoint with suspicious parameters
Network Indicators:
- POST requests to /WinplusPortal/ws/sWinplus.svc/json/getacumper_post containing SQL keywords in parameters
SIEM Query:
source="web_logs" AND uri="/WinplusPortal/ws/sWinplus.svc/json/getacumper_post" AND (param="val1" OR param="cont") AND (value CONTAINS "UNION" OR value CONTAINS "SELECT" OR value CONTAINS "DROP" OR value CONTAINS "INSERT")