CVE-2019-25457
📋 TL;DR
Web Ofisi Firma v13 contains an unauthenticated SQL injection vulnerability in the 'oz' parameter. Attackers can inject malicious SQL payloads via GET requests to extract sensitive database information. All organizations using this software version are affected.
💻 Affected Systems
- Web Ofisi Firma
📦 What is this software?
Firma by Web Ofisi
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including extraction of sensitive customer data, financial records, and administrative credentials leading to data breach and potential system takeover.
Likely Case
Data exfiltration of sensitive information from the database, potentially including user credentials, personal data, and business information.
If Mitigated
Limited information disclosure if database permissions are properly restricted and input validation is implemented.
🎯 Exploit Status
Exploit code is publicly available and requires minimal technical skill to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.web-ofisi.com/detay/kurumsal-firma-v13-sinirsiz-dil.html
Restart Required: No
Instructions:
1. Check vendor website for updated version. 2. If no patch available, implement workarounds. 3. Consider upgrading to a supported version if available.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests.
Input Validation Filter
allImplement server-side input validation to sanitize the 'oz' parameter before processing.
🧯 If You Can't Patch
- Implement network segmentation to restrict access to the vulnerable application
- Deploy intrusion detection systems to monitor for SQL injection attempts
🔍 How to Verify
Check if Vulnerable:
Send a GET request with a time-based SQL injection payload in the 'oz[]' parameter and measure response time.Check Version:
Check application version in admin panel or configuration filesVerify Fix Applied:
Test with the same payload after implementing fixes; successful fix should return normal response times and error messages.📡 Detection & Monitoring
Log Indicators:
- Unusual GET requests containing 'oz[]' parameter with SQL keywords
- Multiple failed database queries from single IP
Network Indicators:
- HTTP requests with SQL injection patterns in URL parameters
- Unusual database query patterns from web server
SIEM Query:
source="web_logs" AND (url="*oz[]=*" AND (url="*SLEEP(*" OR url="*WAITFOR(*" OR url="*BENCHMARK(*"))