CVE-2024-9039
📋 TL;DR
This critical SQL injection vulnerability in SourceCodester Best House Rental Management System 1.0 allows attackers to execute arbitrary SQL commands through the signup form. Remote attackers can potentially access, modify, or delete database contents. All installations of version 1.0 with the vulnerable /ajax.php endpoint exposed are affected.
💻 Affected Systems
- SourceCodester Best House Rental Management 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 if database functions allow it.
Likely Case
Unauthorized data access, user account compromise, and potential privilege escalation within the application.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only error messages or minor data exposure.
🎯 Exploit Status
Exploit code is publicly available on GitHub. Time-based SQL injection technique is documented. No authentication required to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
No official patch available. Check vendor website for updates. Consider implementing workarounds or replacing the software.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries for all user inputs in the signup functionality.
Modify /ajax.php to use prepared statements with bound parameters for firstname, lastname, and email fields
Web Application Firewall (WAF) Rules
allDeploy WAF rules to block SQL injection patterns targeting the /ajax.php endpoint.
Add WAF rule: Block requests to /ajax.php?action=signup containing SQL keywords in firstname, lastname, or email parameters
🧯 If You Can't Patch
- Block external access to the system using network firewalls or move it behind VPN
- Implement strict database permissions limiting application user to only necessary operations
🔍 How to Verify
Check if Vulnerable:
Test the /ajax.php?action=signup endpoint with SQL injection payloads in firstname, lastname, or email parameters and observe time delays or error responses.Check Version:
Check application version in admin panel or review source code for version markers (typically in config files or footer)Verify Fix Applied:
Test with same SQL injection payloads and verify they are properly sanitized or rejected without executing SQL commands.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed signup attempts with special characters
- Long response times from /ajax.php endpoint
Network Indicators:
- HTTP POST requests to /ajax.php?action=signup containing SQL keywords (UNION, SELECT, SLEEP, etc.)
- Abnormal traffic patterns to signup functionality
SIEM Query:
source="web_logs" AND uri_path="/ajax.php" AND query_string="*action=signup*" AND (request_body="*UNION*" OR request_body="*SELECT*" OR request_body="*SLEEP*")🔗 References
- https://github.com/para-paradise/webray.com.cn/blob/main/Best%20house%20rental%20management%20system%20project%20in%20php/Best%20house%20rental%20management%20system%20signup%20time-based%20SQL%20Injection%20Vulnerability.md
- https://vuldb.com/?ctiid.278210
- https://vuldb.com/?id.278210
- https://vuldb.com/?submit.411471
- https://www.sourcecodester.com/
