CVE-2017-11412
📋 TL;DR
CVE-2017-11412 is a critical SQL injection vulnerability in Fiyo CMS 2.0.7 that allows attackers to execute arbitrary SQL commands through the comment_status.php component. This affects all websites running the vulnerable version of Fiyo CMS, potentially compromising the entire database. Attackers can exploit this without authentication via the $_GET['id'] parameter.
💻 Affected Systems
- Fiyo CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, privilege escalation, remote code execution, and full system takeover.
Likely Case
Database information disclosure, data manipulation, and potential administrative access to the CMS.
If Mitigated
Limited impact with proper input validation and parameterized queries in place.
🎯 Exploit Status
The exploit is straightforward as it involves simple SQL injection through a GET parameter. Public proof-of-concept code is available in the GitHub issue.
🛠️ 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. Upgrade Fiyo CMS to version 2.0.8 or later. 2. Replace the vulnerable file dapur/apps/app_comment/controller/comment_status.php with the patched version. 3. Verify that $_GET['id'] parameter is properly sanitized or uses prepared statements.
🔧 Temporary Workarounds
Input Validation Workaround
allAdd input validation to sanitize the 'id' parameter before processing
Edit dapur/apps/app_comment/controller/comment_status.php and add: $id = intval($_GET['id']); before any database operations
WAF Rule
allImplement web application firewall rules to block SQL injection patterns
Add WAF rule: deny requests containing SQL keywords in GET parameters
🧯 If You Can't Patch
- Disable or restrict access to the comment_status.php component
- Implement strict input validation and parameterized queries in the affected file
🔍 How to Verify
Check if Vulnerable:
Check if running Fiyo CMS version 2.0.7 and examine dapur/apps/app_comment/controller/comment_status.php for lack of input validation on $_GET['id']Check Version:
Check Fiyo CMS version in configuration files or admin panelVerify Fix Applied:
Verify version is 2.0.8+ and check that comment_status.php uses prepared statements or proper input sanitization📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple requests to comment_status.php with SQL-like parameters
- Error logs showing SQL syntax errors
Network Indicators:
- HTTP GET requests to comment_status.php with SQL injection payloads in parameters
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND uri="*comment_status.php*" AND (param="*UNION*" OR param="*SELECT*" OR param="*INSERT*" OR param="*DELETE*")