CVE-2018-17428
📋 TL;DR
This vulnerability allows attackers to execute arbitrary SQL commands through the 'scelta=campi biblio' parameter in OPAC EasyWeb Five's w2001/index.php. It affects all users of OPAC EasyWeb Five 5.7 who have the vulnerable component exposed. Successful exploitation could lead to complete database compromise.
💻 Affected Systems
- OPAC EasyWeb Five
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full database compromise allowing data theft, modification, or deletion, and potential remote code execution through database functions.
Likely Case
Unauthorized data extraction from the database, including sensitive user information or system credentials.
If Mitigated
Limited impact with proper input validation and database permissions restricting query execution.
🎯 Exploit Status
Exploit code is publicly available and requires no authentication. Simple SQL injection techniques work.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation for the 'scelta' parameter to only allow expected values.
Modify w2001/index.php to validate and sanitize the 'scelta' parameter before processing
Web Application Firewall Rule
allBlock SQL injection patterns targeting the vulnerable parameter.
WAF rule: Block requests containing SQL keywords in the 'scelta' parameter
🧯 If You Can't Patch
- Restrict network access to the vulnerable endpoint using firewall rules or access controls.
- Implement database-level protections: use least privilege accounts, enable query logging, and restrict dangerous SQL functions.
🔍 How to Verify
Check if Vulnerable:
Test the endpoint with SQL injection payloads: w2001/index.php?scelta=campi biblio' OR '1'='1Check Version:
Check application version in admin interface or configuration files.Verify Fix Applied:
Attempt SQL injection tests after implementing fixes; verify no database errors or unexpected results.📡 Detection & Monitoring
Log Indicators:
- SQL syntax errors in web server logs
- Unusual database queries from the application
- Multiple failed login attempts via SQL injection
Network Indicators:
- HTTP requests with SQL keywords in the 'scelta' parameter
- Unusual traffic patterns to the vulnerable endpoint
SIEM Query:
source="web_logs" AND (uri="*w2001/index.php*" AND (param="*scelta=*sql*" OR param="*scelta=*union*" OR param="*scelta=*select*"))