CVE-2023-44694
📋 TL;DR
This vulnerability allows attackers to execute arbitrary SQL commands on D-Link DAR-7000 Online Behavior Audit Gateway devices via the /log/mailrecvview.php endpoint. Successful exploitation could lead to data theft, authentication bypass, or remote code execution. Organizations using D-Link DAR-7000 gateways are affected.
💻 Affected Systems
- D-Link Online Behavior Audit Gateway DAR-7000
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise including remote code execution, data exfiltration, and persistent backdoor installation
Likely Case
Database compromise leading to sensitive information disclosure and potential lateral movement within the network
If Mitigated
Limited impact due to network segmentation and proper input validation controls
🎯 Exploit Status
The GitHub reference contains exploit details and proof-of-concept code
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Check D-Link security advisories for firmware updates. If available, download and install the latest firmware from the official D-Link support portal.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection protection rules to block malicious requests
Network Access Control
linuxRestrict access to the DAR-7000 web interface to trusted IP addresses only
iptables -A INPUT -p tcp --dport 80 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Isolate the DAR-7000 device in a separate network segment with strict firewall rules
- Disable the mailrecvview.php endpoint if not required for business operations
🔍 How to Verify
Check if Vulnerable:
Test the /log/mailrecvview.php endpoint with SQL injection payloads or check current firmware version against known vulnerable versionsCheck Version:
Check web interface System Status page or use SNMP queries to determine firmware versionVerify Fix Applied:
Verify firmware version is updated beyond V31R02B1413C and test the endpoint with SQL injection payloads to confirm they are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple failed login attempts followed by SQL injection patterns
- Unexpected database queries from web application
Network Indicators:
- HTTP requests to /log/mailrecvview.php containing SQL keywords (UNION, SELECT, INSERT, etc.)
- Unusual outbound database connections from the gateway
SIEM Query:
source="web_logs" AND uri="/log/mailrecvview.php" AND (query="*UNION*" OR query="*SELECT*" OR query="*INSERT*")