CVE-2025-4486
📋 TL;DR
This critical SQL injection vulnerability in itsourcecode Gym Management System 1.0 allows remote attackers to execute arbitrary SQL commands via the ID parameter in the /ajax.php?action=delete_plan endpoint. Attackers can potentially read, modify, or delete database contents, including sensitive member information. All deployments of version 1.0 are affected.
💻 Affected Systems
- itsourcecode Gym Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, and potential remote code execution via database functions.
Likely Case
Unauthorized access to sensitive gym member data (personal information, payment details, health records) and potential privilege escalation.
If Mitigated
Limited impact with proper input validation and database permissions, though SQL injection attempts would still be logged.
🎯 Exploit Status
Exploit details are publicly disclosed on GitHub. The vulnerability requires minimal technical skill to exploit due to simple SQL injection vector.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://itsourcecode.com/
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Parameterized Queries
allModify the delete_plan functionality to use prepared statements with parameterized queries instead of concatenating user input.
Replace vulnerable SQL code with: $stmt = $conn->prepare('DELETE FROM plans WHERE id = ?'); $stmt->bind_param('i', $_POST['ID']); $stmt->execute();
Web Application Firewall (WAF) Rules
allDeploy WAF rules to block SQL injection patterns targeting the /ajax.php endpoint.
ModSecurity rule: SecRule ARGS:ID "@rx (?i)(union|select|insert|update|delete|drop|create|alter|exec|xp_)" "id:1001,phase:2,deny,status:403,msg:'SQLi attempt detected'"
🧯 If You Can't Patch
- Isolate the system behind a reverse proxy with strict input validation and rate limiting
- Implement network segmentation to restrict database access from the application server
🔍 How to Verify
Check if Vulnerable:
Test the /ajax.php?action=delete_plan endpoint with SQL injection payloads like: ID=1' OR '1'='1Check Version:
Check the application's version in admin panel or source code commentsVerify Fix Applied:
Verify that parameterized queries are implemented and SQL injection attempts return proper error messages without executing.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple DELETE requests to /ajax.php with varying ID parameters
- Requests containing SQL keywords (UNION, SELECT, etc.)
Network Indicators:
- Unusual database connection patterns from application server
- Large volume of requests to /ajax.php endpoint
SIEM Query:
source="web_logs" AND uri="/ajax.php" AND (query_string="*delete_plan*" AND (query_string="*UNION*" OR query_string="*SELECT*" OR query_string="*' OR '*"))