CVE-2019-25459
📋 TL;DR
CVE-2019-25459 is an unauthenticated SQL injection vulnerability in Web Ofisi Emlak V2 real estate software. Attackers can inject SQL code through multiple GET parameters to extract sensitive database information or perform blind SQL injection attacks. This affects all deployments of Web Ofisi Emlak V2 that are exposed to untrusted networks.
💻 Affected Systems
- Web Ofisi Emlak V2
📦 What is this software?
Emlak by Web Ofisi
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including sensitive customer data, financial records, and administrative credentials leading to data theft, system takeover, or ransomware deployment.
Likely Case
Extraction of sensitive information like user credentials, personal data, and business records through SQL injection attacks.
If Mitigated
Limited impact with proper input validation and WAF protection, potentially only causing service disruption.
🎯 Exploit Status
Exploit code is publicly available on Exploit-DB (ID 47142) and requires no authentication. Attackers can use automated tools like sqlmap for exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Web Ofisi Emlak V3
Vendor Advisory: https://www.web-ofisi.com/detay/emlak-scripti-v3.html
Restart Required: Yes
Instructions:
1. Upgrade to Web Ofisi Emlak V3. 2. Replace all V2 files with V3 version. 3. Test functionality. 4. Restart web server.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation for all GET parameters in emlak-ara.html endpoint
Modify PHP code to sanitize: $_GET['emlak_durumu'], $_GET['emlak_tipi'], $_GET['il'], $_GET['ilce'], $_GET['kelime'], $_GET['semt'] using mysqli_real_escape_string() or parameterized queries
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns
Add WAF rule: deny requests containing SQL keywords like UNION, SELECT, INSERT, UPDATE, DELETE, DROP in GET parameters
🧯 If You Can't Patch
- Implement network segmentation to isolate the vulnerable system from sensitive databases
- Deploy a reverse proxy with strict input validation and rate limiting
🔍 How to Verify
Check if Vulnerable:
Test emlak-ara.html endpoint with SQL injection payloads like: /emlak-ara.html?emlak_durumu=1' OR '1'='1Check Version:
Check application version in admin panel or footer of Web Ofisi Emlak interfaceVerify Fix Applied:
Test same payloads after fix - should return error or no data leakage. Verify parameterized queries are implemented.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple requests to emlak-ara.html with special characters in parameters
- Requests containing SQL keywords in GET parameters
Network Indicators:
- Unusual database query patterns from web server
- Multiple failed login attempts following SQL injection attempts
SIEM Query:
source="web_server.log" AND uri="/emlak-ara.html" AND (param="emlak_durumu" OR param="emlak_tipi" OR param="il" OR param="ilce" OR param="kelime" OR param="semt") AND (value="*'*" OR value="*;*" OR value="*--*" OR value="*UNION*" OR value="*SELECT*")