CVE-2024-44410
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on D-Link DI-8300 routers via command injection in the upgrade_filter_asp function. Attackers can gain full control of affected devices, potentially compromising network security. Organizations using D-Link DI-8300 routers with vulnerable firmware are affected.
💻 Affected Systems
- D-Link DI-8300
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device takeover leading to network compromise, data exfiltration, lateral movement to other systems, and persistent backdoor installation.
Likely Case
Router compromise allowing traffic interception, credential theft, and use as pivot point for further attacks.
If Mitigated
Limited impact if device is isolated, properly segmented, and monitored with intrusion detection.
🎯 Exploit Status
Public proof-of-concept available on GitHub; command injection vulnerabilities are typically easy to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: Yes
Instructions:
1. Check D-Link security bulletin for firmware updates. 2. Download latest firmware from official D-Link website. 3. Log into router admin interface. 4. Navigate to firmware upgrade section. 5. Upload and apply new firmware. 6. Reboot router after update completes.
🔧 Temporary Workarounds
Network Segmentation
allIsolate vulnerable routers from critical network segments
Access Control
linuxRestrict administrative access to trusted IP addresses only
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Replace vulnerable devices with updated models or different vendors
- Implement strict network monitoring and intrusion detection for suspicious router activity
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface; if version is v16.07.26A1, device is vulnerable.Check Version:
curl -s http://router-ip/status.html | grep -i firmwareVerify Fix Applied:
Verify firmware version has been updated to a version later than v16.07.26A1.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in router logs
- Multiple failed upgrade attempts
- Suspicious POST requests to upgrade_filter_asp
Network Indicators:
- Unexpected outbound connections from router
- Traffic patterns indicating command-and-control communication
SIEM Query:
source="router.log" AND ("upgrade_filter_asp" OR "command injection" OR suspicious shell commands)