CVE-2023-30018
📋 TL;DR
Judging Management System v1.0 contains a SQL injection vulnerability in the review_se_result.php endpoint that allows attackers to execute arbitrary SQL commands via the mainevent_id parameter. This affects all deployments of this specific software version. Attackers can potentially access, modify, or delete database content.
💻 Affected Systems
- Judging Management System
📦 What is this software?
Judging Management System by Judging Management System Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, authentication bypass, or remote code execution if database functions allow it.
Likely Case
Database information disclosure, unauthorized data access, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper input validation, parameterized queries, and network segmentation in place.
🎯 Exploit Status
Public proof-of-concept available on GitHub. Exploitation requires no authentication and uses simple SQL injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Implement workarounds or migrate to a secure alternative system.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to only accept numeric values for mainevent_id parameter
In review_se_result.php, add: if(!is_numeric($_GET['mainevent_id'])) { die('Invalid input'); }
Web Application Firewall Rule
allBlock SQL injection patterns in the mainevent_id parameter
WAF rule: SecRule ARGS:mainevent_id "@detectSQLi" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Block access to /php-jms/review_se_result.php at network perimeter
- Implement strict network segmentation to isolate the vulnerable system
🔍 How to Verify
Check if Vulnerable:
Test with payload: /php-jms/review_se_result.php?mainevent_id=1' OR '1'='1Check Version:
Check software version in application interface or configuration filesVerify Fix Applied:
Test with same payload - should return error or no SQL injection behavior📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple requests to review_se_result.php with SQL-like parameters
Network Indicators:
- HTTP requests containing SQL keywords in mainevent_id parameter
- Unusual database query patterns from application server
SIEM Query:
source="web_logs" AND uri="/php-jms/review_se_result.php" AND (query_string CONTAINS "' OR" OR query_string CONTAINS "UNION" OR query_string CONTAINS "SELECT")