CVE-2017-11416
📋 TL;DR
CVE-2017-11416 is a critical SQL injection vulnerability in Fiyo CMS 2.0.7 that allows attackers to execute arbitrary SQL commands through the name parameter in the comment insertion functionality. This affects all installations running the vulnerable version, potentially compromising the entire database and application. Attackers can exploit this without authentication to steal, modify, or delete sensitive data.
💻 Affected Systems
- Fiyo CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, privilege escalation to admin access, and potential remote code execution through database functions.
Likely Case
Unauthenticated attackers extracting sensitive user data, modifying content, or gaining administrative access to the CMS.
If Mitigated
Limited impact with proper input validation, parameterized queries, and web application firewall rules blocking SQL injection patterns.
🎯 Exploit Status
The vulnerability is well-documented in public repositories with proof-of-concept examples. SQL injection through HTTP parameters is a common attack vector with many automated tools available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
1. Upgrade to a newer version of Fiyo CMS if available
2. Manually patch the vulnerable file (/apps/app_comment/controller/insert.php) by implementing parameterized queries
3. Replace raw SQL queries with prepared statements using PDO or mysqli with bound parameters
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd server-side validation to sanitize the name parameter before processing
Edit /apps/app_comment/controller/insert.php and add: $name = mysqli_real_escape_string($connection, $_POST['name']);
Disable Comment Functionality
linuxTemporarily disable the vulnerable comment insertion endpoint
Rename or remove /apps/app_comment/controller/insert.php
Add .htaccess rule: RewriteRule ^apps/app_comment/controller/insert\.php$ - [F,L]
🧯 If You Can't Patch
- Implement a Web Application Firewall (WAF) with SQL injection protection rules
- Restrict access to the vulnerable endpoint using network ACLs or authentication requirements
🔍 How to Verify
Check if Vulnerable:
Check if file /apps/app_comment/controller/insert.php exists and contains unsanitized $_POST['name'] usage in SQL queriesCheck Version:
Check Fiyo CMS version in configuration files or admin panelVerify Fix Applied:
Test the comment functionality with SQL injection payloads like ' OR '1'='1 in the name parameter and verify no database errors or unexpected behavior occurs📡 Detection & Monitoring
Log Indicators:
- SQL syntax errors in application logs
- Unusual database queries from web server IP
- Multiple failed comment submissions with special characters
Network Indicators:
- HTTP POST requests to /apps/app_comment/controller/insert.php containing SQL keywords in parameters
- Unusual traffic patterns to comment functionality
SIEM Query:
source="web_logs" AND uri="/apps/app_comment/controller/insert.php" AND (param="name" AND value MATCH "[';]|UNION|SELECT|INSERT|UPDATE|DELETE|DROP|OR.*=.*")