CVE-2025-6905
📋 TL;DR
A critical SQL injection vulnerability exists in code-projects Car Rental System 1.0 through the /signup.php file's fname parameter. Attackers can remotely execute arbitrary SQL commands to potentially access, modify, or delete database contents. All deployments of this specific software version are affected.
💻 Affected Systems
- code-projects Car Rental System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data destruction, authentication bypass, and potential remote code execution via database functions.
Likely Case
Unauthorized data access, user credential theft, and potential privilege escalation within the application.
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 available on GitHub and vuldb. SQL injection via fname parameter is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://code-projects.org/
Restart Required: No
Instructions:
No official patch available. Consider implementing input validation and parameterized queries manually, or replace with alternative software.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection rules to block malicious requests to /signup.php
Input Validation Filter
allAdd server-side input validation to reject SQL special characters in fname parameter
🧯 If You Can't Patch
- Disable or restrict access to /signup.php if user registration is not required
- Implement network segmentation to isolate the vulnerable system from sensitive data
🔍 How to Verify
Check if Vulnerable:
Test /signup.php endpoint with SQL injection payloads in fname parameter and observe database errors or unexpected behavior.Check Version:
Check software documentation or configuration files for version information.Verify Fix Applied:
Verify that SQL injection attempts no longer succeed and that proper input validation is implemented.📡 Detection & Monitoring
Log Indicators:
- SQL syntax errors in application logs
- Unusual database queries from web server
- Multiple failed signup attempts with special characters
Network Indicators:
- HTTP POST requests to /signup.php containing SQL keywords in parameters
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND uri="/signup.php" AND (payload CONTAINS "UNION" OR payload CONTAINS "SELECT" OR payload CONTAINS "' OR '")