CVE-2017-11414
📋 TL;DR
CVE-2017-11414 is a critical SQL injection vulnerability in Fiyo CMS 2.0.7 that allows attackers to execute arbitrary SQL commands through multiple user input fields. This affects all installations of Fiyo CMS 2.0.7, potentially compromising the entire database and application.
💻 Affected Systems
- Fiyo CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, privilege escalation, and full system takeover via SQL injection to RCE chaining.
Likely Case
Database content extraction, user credential theft, and potential administrative access to the CMS.
If Mitigated
Limited impact with proper input validation and WAF protection, though SQL injection attempts may still be logged.
🎯 Exploit Status
Simple SQL injection through POST parameters with public proof-of-concept available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.8 or later
Vendor Advisory: https://github.com/FiyoCMS/FiyoCMS/issues/5
Restart Required: No
Instructions:
1. Backup your current installation. 2. Download Fiyo CMS 2.0.8 or later from official repository. 3. Replace vulnerable files with patched versions. 4. Verify the fix by testing input validation.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize user inputs before processing.
Modify dapur/apps/app_comment/sys_comment.php to add parameterized queries or input sanitization
WAF Protection
allDeploy web application firewall to block SQL injection patterns.
Configure WAF rules to block SQL injection patterns in POST parameters
🧯 If You Can't Patch
- Isolate the vulnerable system behind a reverse proxy with strict input filtering
- Disable or restrict access to the comment functionality if not essential
🔍 How to Verify
Check if Vulnerable:
Check if running Fiyo CMS version 2.0.7 by examining version files or admin panel.Check Version:
Check version.txt file or admin panel for version informationVerify Fix Applied:
Test SQL injection attempts on comment fields; successful exploitation indicates still vulnerable.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed login attempts after comment submission
- Suspicious POST parameters containing SQL keywords
Network Indicators:
- HTTP POST requests with SQL injection payloads to comment endpoints
- Unusual database connection patterns
SIEM Query:
source="web_logs" AND (method="POST" AND uri="*sys_comment.php*" AND (param="*' OR *" OR param="*UNION*" OR param="*SELECT*"))