CVE-2025-6451
📋 TL;DR
This critical SQL injection vulnerability in Simple Online Hotel Reservation System 1.0 allows remote attackers to execute arbitrary SQL commands via the transaction_id parameter in /admin/delete_pending.php. All systems running this software without patching are affected, potentially leading to complete database compromise.
💻 Affected Systems
- Simple Online Hotel Reservation System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, privilege escalation to admin, and potential remote code execution via database functions.
Likely Case
Unauthorized data access, modification or deletion of reservation records, and potential extraction of sensitive customer information.
If Mitigated
Limited impact with proper input validation, parameterized queries, and web application firewall rules blocking SQL injection patterns.
🎯 Exploit Status
Exploit requires access to admin interface but SQL injection is straightforward once authenticated. Public exploit code is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://code-projects.org/
Restart Required: No
Instructions:
1. Check vendor website for patches or updated version. 2. If no patch available, implement parameterized queries in /admin/delete_pending.php. 3. Validate and sanitize transaction_id parameter input. 4. Apply web application firewall rules.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock SQL injection patterns targeting the transaction_id parameter
ModSecurity rule: SecRule ARGS:transaction_id "@detectSQLi" "id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt'"
nginx: location ~* /admin/delete_pending\.php { if ($args ~* "transaction_id.*[';\-]+") { return 403; } }
Access Restriction
allRestrict access to admin interface to trusted IP addresses only
.htaccess: Order Deny,Allow
Deny from all
Allow from 192.168.1.0/24
nginx: location /admin/ { allow 192.168.1.0/24; deny all; }
🧯 If You Can't Patch
- Implement network segmentation to isolate the reservation system from other critical systems
- Deploy a web application firewall with SQL injection detection rules
🔍 How to Verify
Check if Vulnerable:
Test the /admin/delete_pending.php endpoint with SQL injection payloads like: transaction_id=1' OR '1'='1Check Version:
Check the software version in the admin panel or readme filesVerify Fix Applied:
Verify that SQL injection payloads no longer work and that parameterized queries are implemented in the PHP code📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple failed login attempts followed by SQL injection patterns
- Requests to /admin/delete_pending.php with unusual transaction_id values
Network Indicators:
- HTTP POST requests to /admin/delete_pending.php containing SQL keywords in parameters
- Unusual database query patterns from web server IP
SIEM Query:
source="web_logs" AND uri_path="/admin/delete_pending.php" AND (transaction_id="*'*" OR transaction_id="*;*" OR transaction_id="*--*" OR transaction_id="*UNION*" OR transaction_id="*SELECT*" OR transaction_id="*INSERT*" OR transaction_id="*UPDATE*" OR transaction_id="*DELETE*")