CVE-2015-3934
📋 TL;DR
CVE-2015-3934 is a critical SQL injection vulnerability in Fiyo CMS that allows remote attackers to execute arbitrary SQL commands through the id parameter in rating.php or the user parameter in login.php. This affects all installations of Fiyo CMS 2.0_1.9.1, potentially compromising the entire database and system.
💻 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 remote code execution.
Likely Case
Database extraction of sensitive information including user credentials, content, and configuration data, potentially leading to website defacement or administrative access.
If Mitigated
Limited information disclosure if proper input validation and parameterized queries are implemented.
🎯 Exploit Status
Public exploit code available on Packet Storm. Exploitation requires minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
1. Upgrade to a newer version of Fiyo CMS if available. 2. If no patch exists, implement input validation and parameterized queries in the affected files. 3. Replace vulnerable code with secure alternatives.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to filter malicious SQL characters in affected parameters
Edit apps/app_article/controller/rating.php and user/login.php to add input sanitization
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns
Configure WAF to block requests containing SQL keywords in id and user parameters
🧯 If You Can't Patch
- Isolate the vulnerable system behind a reverse proxy with strict input filtering
- Implement network segmentation to limit database access from web servers
🔍 How to Verify
Check if Vulnerable:
Test the id parameter in /apps/app_article/controller/rating.php and user parameter in /user/login.php with SQL injection payloads like ' OR '1'='1Check Version:
Check Fiyo CMS version in configuration files or admin panelVerify Fix Applied:
Verify that SQL injection payloads no longer execute and return error messages or are properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple failed login attempts with SQL payloads
- Requests to rating.php or login.php with suspicious parameters
Network Indicators:
- HTTP requests containing SQL keywords (SELECT, UNION, etc.) in id or user parameters
- Abnormal database query patterns from web server
SIEM Query:
source="web_logs" AND (uri="*rating.php*" OR uri="*login.php*") AND (param="*id=*" OR param="*user=*") AND (payload="*' OR*" OR payload="*UNION*" OR payload="*SELECT*" OR payload="*--*" OR payload="*/*")