CVE-2020-24932
📋 TL;DR
This SQL injection vulnerability in Sourcecodester Complaint Management System 1.0 allows attackers to execute arbitrary SQL commands via the cid parameter in complaint-details.php. This can lead to data theft, modification, or deletion. Organizations using this specific version of the software are affected.
💻 Affected Systems
- Sourcecodester Complaint Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the database including data exfiltration, data destruction, privilege escalation to administrative access, and potential server takeover.
Likely Case
Unauthorized access to sensitive complaint data, personal information disclosure, and potential manipulation of system records.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection execution.
🎯 Exploit Status
Public exploit code is available on Exploit-DB. The vulnerability requires no authentication and has simple exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds and code fixes.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement proper input validation and parameterized queries for the cid parameter in complaint-details.php
Modify PHP code to use prepared statements: $stmt = $conn->prepare('SELECT * FROM complaints WHERE id = ?'); $stmt->bind_param('i', $cid); $stmt->execute();
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests
Configure WAF rules to detect and block SQL injection patterns in URL parameters
🧯 If You Can't Patch
- Isolate the system from the internet and restrict access to authorized users only
- Implement network segmentation to limit database server access from the web application only
🔍 How to Verify
Check if Vulnerable:
Test the complaint-details.php endpoint with SQL injection payloads in the cid parameter (e.g., complaint-details.php?cid=1' OR '1'='1)Check Version:
Check the application version in the admin panel or by examining the source code filesVerify Fix Applied:
Test with the same SQL injection payloads and verify they are rejected or properly handled without database errors📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts or unusual parameter values in access logs
Network Indicators:
- HTTP requests with SQL keywords in URL parameters
- Unusual database query patterns from the web server
SIEM Query:
source="web_access_logs" AND (uri="*complaint-details.php*" AND (param="*cid=*'*" OR param="*cid=*%27*" OR param="*cid=*UNION*" OR param="*cid=*SELECT*"))