CVE-2025-41020
📋 TL;DR
This CVE describes an Insecure Direct Object Reference (IDOR) vulnerability in Sergestec's Exito v8.0 that allows attackers to access other customers' data by manipulating the 'id' parameter in the '/admin/ticket_a4.php' endpoint. This affects all organizations using the vulnerable version of Exito software. Attackers can exploit this without authentication to view sensitive ticket information belonging to other users.
💻 Affected Systems
- Sergestec Exito
📦 What is this software?
Exito by Sergestec
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all customer data in the system, including sensitive ticket details, customer information, and potentially other confidential business data, leading to data breach, regulatory fines, and reputational damage.
Likely Case
Unauthorized access to other customers' ticket data, potentially exposing sensitive communications, customer details, and internal business information.
If Mitigated
Limited or no data exposure if proper access controls, input validation, and authorization checks are implemented.
🎯 Exploit Status
IDOR vulnerabilities are typically easy to exploit with basic web testing tools. The vulnerability allows parameter manipulation without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-sergestec-products
Restart Required: No
Instructions:
1. Check vendor advisory for patch availability. 2. If patch is released, download from official vendor source. 3. Apply patch following vendor instructions. 4. Test functionality after patching.
🔧 Temporary Workarounds
Web Application Firewall (WAF) Rules
allImplement WAF rules to block or monitor suspicious parameter manipulation in the '/admin/ticket_a4.php' endpoint
Access Control Enhancement
allImplement server-side authorization checks to verify users can only access their own ticket data
🧯 If You Can't Patch
- Implement strict access controls and authorization checks at the application layer
- Deploy network segmentation and restrict access to the vulnerable endpoint
🔍 How to Verify
Check if Vulnerable:
Test by accessing '/admin/ticket_a4.php' with different 'id' parameter values to see if unauthorized data access is possibleCheck Version:
Check Exito version in application interface or configuration filesVerify Fix Applied:
Attempt the same unauthorized access tests after implementing fixes to confirm proper authorization checks are in place📡 Detection & Monitoring
Log Indicators:
- Multiple failed authorization attempts
- Unusual access patterns to ticket endpoints
- Requests with manipulated 'id' parameters
Network Indicators:
- Unusual traffic to '/admin/ticket_a4.php'
- Parameter tampering in HTTP requests
SIEM Query:
source="web_logs" AND uri="/admin/ticket_a4.php" AND (id_parameter_changes OR unauthorized_access_attempts)