CVE-2017-15991
📋 TL;DR
This CVE describes a SQL injection vulnerability in Vastal I-Tech Agent Zone (The Real Estate Script) that allows attackers to execute arbitrary SQL commands through search parameters. It affects users of this real estate management software who haven't applied proper input validation. The vulnerability is particularly dangerous because it can be exploited without authentication.
💻 Affected Systems
- Vastal I-Tech Agent Zone
- The Real Estate Script
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, and potential remote code execution through database functions.
Likely Case
Database information disclosure, including sensitive user data, property listings, and potentially administrative credentials.
If Mitigated
Limited impact with proper input validation and parameterized queries in place.
🎯 Exploit Status
Public exploit code is available on Exploit-DB. The SQL injection is straightforward and doesn't require authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown specific version - check vendor for updates
Vendor Advisory: Unknown - vendor appears to be defunct
Restart Required: No
Instructions:
1. Contact vendor for patched version 2. Apply input validation and parameterized queries 3. Sanitize all user inputs 4. Update to latest version if available
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to filter malicious SQL characters
// PHP example: filter input parameters
$property_type = mysqli_real_escape_string($conn, $_GET['property_type']);
// Or use prepared statements
Web Application Firewall Rules
linuxImplement WAF rules to block SQL injection patterns
# Example mod_security rule
SecRule ARGS "@detectSQLi" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Implement a Web Application Firewall (WAF) with SQL injection protection rules
- Disable or restrict access to searchCommercial.php and searchResidential.php scripts
🔍 How to Verify
Check if Vulnerable:
Test search parameters with SQL injection payloads like: searchCommercial.php?property_type=1' OR '1'='1Check Version:
Check script headers or contact vendor - no standard version command availableVerify Fix Applied:
Test with same payloads after fix - should return error or no data instead of executing SQL📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in application logs
- Multiple failed login attempts following SQL errors
- Long parameter values in search requests
Network Indicators:
- HTTP requests with SQL keywords in parameters
- Unusual database query patterns from web server
SIEM Query:
source="web_logs" AND (uri="*searchCommercial.php*" OR uri="*searchResidential.php*") AND (param="*' OR*" OR param="*UNION*" OR param="*SELECT*" OR param="*--*" OR param="*/*")