CVE-2020-20189
📋 TL;DR
This CVE describes a SQL injection vulnerability in NewPK 1.1 that allows attackers to execute arbitrary SQL commands via the title parameter in admin/newpost.php. This affects all users running NewPK 1.1 with the vulnerable admin interface accessible. Attackers can potentially read, modify, or delete database content.
💻 Affected Systems
- NewPK
📦 What is this software?
Newpk by Newpk Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, or remote code execution if database functions allow it.
Likely Case
Unauthorized data access, privilege escalation, or database manipulation leading to application compromise.
If Mitigated
Limited impact with proper input validation and parameterized queries in place.
🎯 Exploit Status
SQL injection via title parameter is straightforward to exploit with common SQLi techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://github.com/ornose15/NewPK/issues/1
Restart Required: No
Instructions:
No official patch available. Apply workarounds or migrate to alternative software.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries for the title parameter in admin/newpost.php
Modify admin/newpost.php to use prepared statements: $stmt = $conn->prepare('INSERT INTO posts (title) VALUES (?)'); $stmt->bind_param('s', $title);
Access Restriction
allRestrict access to admin interface using IP whitelisting or authentication
Add .htaccess to admin directory with: Order Deny,Allow
Deny from all
Allow from 192.168.1.0/24
🧯 If You Can't Patch
- Disable or remove the admin/newpost.php file if not needed
- Implement a web application firewall (WAF) with SQL injection rules
🔍 How to Verify
Check if Vulnerable:
Test the title parameter in admin/newpost.php with SQL injection payloads like ' OR '1'='1Check Version:
Check NewPK version in configuration files or admin interfaceVerify Fix Applied:
Test with SQL injection payloads after applying fixes to ensure they are rejected📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts to admin interface
- Requests to admin/newpost.php with SQL keywords
Network Indicators:
- HTTP requests containing SQL injection patterns to admin/newpost.php
SIEM Query:
source="web_logs" AND uri="/admin/newpost.php" AND (title CONTAINS "' OR" OR title CONTAINS "UNION" OR title CONTAINS "SELECT")