CVE-2021-33948
📋 TL;DR
This SQL injection vulnerability in FantasticLBP Hotels Server v1.0 allows attackers to execute arbitrary SQL commands via the username parameter. Attackers can potentially read, modify, or delete database contents, and in some cases execute arbitrary code on the server. All deployments of FantasticLBP Hotels Server v1.0 are affected.
💻 Affected Systems
- FantasticLBP Hotels Server
📦 What is this software?
Hotels Server by Hotels Server Project
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution, data exfiltration, and potential lateral movement to other systems.
Likely Case
Database compromise leading to data theft, data manipulation, or denial of service.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing exploitation.
🎯 Exploit Status
SQL injection via username parameter is straightforward to exploit with common SQL injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and parameterized queries for all user inputs, especially the username parameter.
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests.
🧯 If You Can't Patch
- Isolate the server from the internet and restrict access to trusted networks only.
- Implement network segmentation and monitor for suspicious database queries.
🔍 How to Verify
Check if Vulnerable:
Test the username parameter with SQL injection payloads like ' OR '1'='1 and observe if database behavior changes.Check Version:
Check application version in configuration files or via application interface.Verify Fix Applied:
Verify that parameterized queries are implemented and test with SQL injection payloads to confirm they are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in application logs
- Multiple failed login attempts with SQL-like patterns
Network Indicators:
- HTTP requests containing SQL keywords in username parameter
SIEM Query:
source="application_logs" AND ("SELECT" OR "UNION" OR "OR '1'='1") AND username=*