CVE-2025-13556
📋 TL;DR
CVE-2025-13556 is an SQL injection vulnerability in Campcodes Online Polling System 1.0 that allows remote attackers to execute arbitrary SQL commands via the 'myusername' parameter in /admin/checklogin.php. This affects all installations of Campcodes Online Polling System 1.0, potentially allowing attackers to bypass authentication, access sensitive data, or compromise the database.
💻 Affected Systems
- Campcodes Online Polling System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, authentication bypass, privilege escalation, and potential remote code execution if database functions allow it.
Likely Case
Authentication bypass allowing unauthorized admin access, data exfiltration from polling database, and potential system compromise.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing successful exploitation.
🎯 Exploit Status
Exploit code is publicly available on GitHub. The vulnerability requires no authentication and has simple exploitation vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.campcodes.com/
Restart Required: No
Instructions:
No official patch available. Consider migrating to alternative polling systems or implementing custom fixes with parameterized queries.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for the myusername parameter in checklogin.php
Modify /admin/checklogin.php to use prepared statements with parameterized queries
Web Application Firewall Rules
allDeploy WAF rules to block SQL injection patterns in login requests
Add WAF rule: Detect and block SQL injection patterns in POST parameters
🧯 If You Can't Patch
- Isolate the polling system in a separate network segment with restricted access
- Implement strong authentication requirements and monitor for suspicious login attempts
🔍 How to Verify
Check if Vulnerable:
Test the /admin/checklogin.php endpoint with SQL injection payloads in the myusername parameterCheck Version:
Check system documentation or configuration files for version informationVerify Fix Applied:
Verify that parameterized queries are implemented and SQL injection attempts are properly rejected📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed login attempts with SQL patterns
- Successful admin logins from unexpected IPs
Network Indicators:
- HTTP POST requests to /admin/checklogin.php containing SQL keywords
- Unusual database query patterns from web server
SIEM Query:
source="web_logs" AND uri="/admin/checklogin.php" AND (payload CONTAINS "' OR" OR payload CONTAINS "UNION" OR payload CONTAINS "SELECT")