CVE-2025-3151
📋 TL;DR
This critical SQL injection vulnerability in SourceCodester Gym Management System 1.0 allows attackers to manipulate database queries through the user_name parameter in /signup.php. Attackers can potentially access, modify, or delete sensitive data including user credentials and gym member information. Any organization using this software with internet exposure is at risk.
💻 Affected Systems
- SourceCodester Gym Management System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, credential harvesting, system takeover, and potential lateral movement to other systems.
Likely Case
Unauthorized data access and extraction of sensitive information including user credentials, personal data, and payment information.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only error messages or limited data exposure.
🎯 Exploit Status
Exploit code is publicly available on GitHub. Attack requires no authentication and uses simple SQL injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
No official patch available. Consider replacing with alternative software or implementing custom fixes.
🔧 Temporary Workarounds
Input Validation Filter
allAdd parameterized queries and input validation to /signup.php
Modify signup.php to use prepared statements: $stmt = $conn->prepare('INSERT INTO users (username) VALUES (?)'); $stmt->bind_param('s', $user_name);
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns
Add WAF rule: SecRule ARGS:user_name "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt'"
🧯 If You Can't Patch
- Isolate the system behind a reverse proxy with strict input filtering
- Implement network segmentation to limit database access from the vulnerable application
🔍 How to Verify
Check if Vulnerable:
Test /signup.php endpoint with SQL injection payloads like: user_name=admin' OR '1'='1Check Version:
Check application version in admin panel or readme filesVerify Fix Applied:
Attempt SQL injection tests and verify they are blocked or sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed signup attempts with special characters
- Database queries with unexpected UNION or SELECT statements
Network Indicators:
- HTTP POST requests to /signup.php containing SQL keywords
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND url="/signup.php" AND (user_name CONTAINS "'" OR user_name CONTAINS "UNION" OR user_name CONTAINS "SELECT")