CVE-2020-21012
📋 TL;DR
This vulnerability allows unauthenticated attackers to execute arbitrary SQL commands via the email parameter in Hotel and Lodge Management System 2.0. Attackers can potentially access, modify, or delete database content, including sensitive customer and financial data. All systems running the vulnerable version are affected.
💻 Affected Systems
- Sourcecodester Hotel and Lodge Management System
📦 What is this software?
Hotel And Lodge Booking Management System by Hotel And Lodge Booking Management System Project
View all CVEs affecting Hotel And Lodge Booking Management System →
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, system takeover, and potential lateral movement to other systems.
Likely Case
Data exfiltration of customer information, financial records, and system credentials.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to non-critical data.
🎯 Exploit Status
SQL injection via email parameter requires minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation and parameterized queries for all email parameters
Implement prepared statements in PHP: $stmt = $pdo->prepare('SELECT * FROM users WHERE email = ?'); $stmt->execute([$email]);
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection patterns in email parameters
ModSecurity rule: SecRule ARGS:email "@detectSQLi" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Isolate the system behind a firewall with strict access controls
- Implement network segmentation to limit database server exposure
🔍 How to Verify
Check if Vulnerable:
Test email parameter with SQL injection payloads: ' OR '1'='1 on edit pagesCheck Version:
Check application version in admin panel or configuration filesVerify Fix Applied:
Verify parameterized queries are implemented and test with SQL injection payloads📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web logs
- Multiple failed login attempts with SQL patterns
Network Indicators:
- HTTP requests with SQL keywords in email parameter
- Unusual database query patterns
SIEM Query:
source="web_logs" AND ("' OR" OR "UNION SELECT" OR "--" OR ";--") AND uri="*edit*"