CVE-2017-15539
📋 TL;DR
This CVE describes a SQL injection vulnerability in the zorovavi/blog software through 2017-10-17. Attackers can exploit the 'id' parameter in recept.php to execute arbitrary SQL commands, potentially compromising the database. Anyone running vulnerable versions of this blog software is affected.
💻 Affected Systems
- zorovavi/blog
📦 What is this software?
Zorovavi\/blog by Zorovavi\/blog Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, authentication bypass, and potential remote code execution if database functions allow it.
Likely Case
Database information disclosure, data manipulation, and potential privilege escalation within the application.
If Mitigated
No impact if proper input validation and parameterized queries are implemented.
🎯 Exploit Status
SQL injection via GET/POST parameters is well-understood and easily automated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider migrating to maintained software or implementing security fixes manually.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation for the 'id' parameter in recept.php
Modify recept.php to validate 'id' parameter as integer: if(!is_numeric($_GET['id'])) { die('Invalid input'); }
Parameterized Queries
allReplace raw SQL queries with prepared statements using PDO or mysqli
Replace: $query = "SELECT * FROM table WHERE id = " . $_GET['id'];
With: $stmt = $pdo->prepare("SELECT * FROM table WHERE id = ?"); $stmt->execute([$_GET['id']]);
🧯 If You Can't Patch
- Block access to recept.php via web application firewall or .htaccess rules
- Implement network segmentation to isolate the vulnerable system from sensitive data
🔍 How to Verify
Check if Vulnerable:
Test recept.php with SQL injection payloads like: recept.php?id=1' OR '1'='1Check Version:
Check file dates or version information in the blog software filesVerify Fix Applied:
Test with SQL injection payloads after implementing fixes - should return error or no data📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple requests to recept.php with SQL keywords in parameters
Network Indicators:
- HTTP requests to recept.php containing SQL injection patterns
- Unusual database query patterns from web server
SIEM Query:
web.url:*recept.php* AND (web.param.id:*OR* OR web.param.id:*UNION* OR web.param.id:*SELECT*)