CVE-2023-30246
📋 TL;DR
A critical SQL injection vulnerability in Judging Management System v1.0 allows remote attackers to execute arbitrary SQL commands via the contestant_id parameter. This can lead to complete database compromise, data theft, or system takeover. Any organization using this vulnerable software version is affected.
💻 Affected Systems
- Judging Management System
📦 What is this software?
Judging Management System by Judging Management System Project
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining administrative access, exfiltrating all sensitive data, and potentially using the system as a foothold for lateral movement.
Likely Case
Database compromise leading to theft of sensitive judging data, contestant information, and potential manipulation of competition results.
If Mitigated
Limited impact with proper input validation and WAF rules blocking malicious SQL patterns.
🎯 Exploit Status
SQL injection via contestant_id parameter is straightforward to exploit. Public proof-of-concept exists in GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider implementing input validation and parameterized queries as workaround.
🔧 Temporary Workarounds
Implement Input Validation
allAdd server-side validation to ensure contestant_id parameter contains only expected characters (numbers).
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns targeting contestant_id parameter.
🧯 If You Can't Patch
- Isolate the system from internet access and restrict to internal network only.
- Implement strict network segmentation and monitor all database queries for suspicious patterns.
🔍 How to Verify
Check if Vulnerable:
Test contestant_id parameter with SQL injection payloads like ' OR '1'='1 and observe if database errors or unexpected behavior occurs.Check Version:
Check application version in admin panel or configuration files.Verify Fix Applied:
Verify that SQL injection payloads no longer execute and return appropriate error messages or are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts or parameter manipulation
Network Indicators:
- Unusual database queries from web application server
- SQL keywords in HTTP parameters
SIEM Query:
source="web_logs" AND (contestant_id CONTAINS "UNION" OR contestant_id CONTAINS "SELECT" OR contestant_id CONTAINS "OR 1=1")