CVE-2020-20469
📋 TL;DR
White Shark System (WSS) 1.3.2 contains a SQL injection vulnerability in log_edit.php that allows remote attackers to execute arbitrary SQL commands via the csa_to_user parameter. This can lead to unauthorized access to sensitive database information. Organizations using WSS 1.3.2 are affected.
💻 Affected Systems
- White Shark System (WSS)
📦 What is this software?
White Shark Systems by White Shark Systems Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including credential theft, data exfiltration, and potential system takeover via SQL injection leading to remote code execution.
Likely Case
Unauthorized access to sensitive database information, potential data modification or deletion, and privilege escalation.
If Mitigated
Limited impact with proper input validation, parameterized queries, and network segmentation in place.
🎯 Exploit Status
SQL injection vulnerabilities are commonly exploited with readily available tools. The specific parameter (csa_to_user) is documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: No
Instructions:
1. Check for official patches from White Shark System developers
2. If no patch available, implement workarounds
3. Consider upgrading to a newer version if available
4. Apply input validation and parameterized queries to log_edit.php
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to filter the csa_to_user parameter in log_edit.php
Edit log_edit.php to add: $csa_to_user = filter_var($_POST['csa_to_user'], FILTER_SANITIZE_STRING);
Web Application Firewall (WAF)
allDeploy WAF rules to block SQL injection attempts
Add WAF rule: Detect and block SQL injection patterns in POST parameters
🧯 If You Can't Patch
- Isolate the WSS system in a segmented network with strict access controls
- Implement network monitoring and IDS/IPS rules to detect SQL injection attempts
🔍 How to Verify
Check if Vulnerable:
Test log_edit.php with SQL injection payloads in csa_to_user parameter (e.g., ' OR '1'='1)Check Version:
Check WSS version in admin panel or configuration filesVerify Fix Applied:
Verify that SQL injection attempts no longer succeed and proper input validation is in place📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts with SQL patterns
- Unexpected database errors in application logs
Network Indicators:
- HTTP POST requests to log_edit.php with SQL keywords in parameters
- Unusual outbound database connections
SIEM Query:
source="web_logs" AND uri="/log_edit.php" AND (param="csa_to_user" AND value MATCH "(?i)(union|select|insert|update|delete|drop|exec|or|and)")