CVE-2024-44400
📋 TL;DR
This critical vulnerability in D-Link DI-8400 firmware version 16.07.26A1 allows remote attackers to execute arbitrary commands on affected devices. The command injection occurs via manipulation of the path parameter in the upgrade_filter_asp function. Organizations using this specific firmware version are at risk.
💻 Affected Systems
- D-Link DI-8400
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attacker to install malware, pivot to internal networks, steal sensitive data, or render device inoperable.
Likely Case
Remote code execution leading to device takeover, credential theft, and use as attack platform against internal networks.
If Mitigated
Limited impact if device is isolated, patched, or has strict input validation in place.
🎯 Exploit Status
Public proof-of-concept available on GitHub; exploitation requires network access to device.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Check D-Link security advisories for updated firmware. If available, download from official vendor site and follow firmware upgrade procedures.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to DI-8400 devices using firewall rules
Disable Remote Management
allTurn off remote administration features if not required
🧯 If You Can't Patch
- Segment network to isolate DI-8400 devices from critical systems
- Implement strict firewall rules to limit inbound connections to necessary services only
🔍 How to Verify
Check if Vulnerable:
Check firmware version in device web interface or via SSH: show versionCheck Version:
show versionVerify Fix Applied:
Verify firmware version has been updated from 16.07.26A1📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed upgrade attempts
- Suspicious network connections from device
Network Indicators:
- Unexpected outbound connections from DI-8400
- Traffic to known malicious IPs
SIEM Query:
source="DI-8400" AND (event="command_execution" OR event="upgrade_failure")