CVE-2024-44341
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on D-Link DIR-846W routers by sending a specially crafted POST request to the lan(0)_dhcps_staticlist parameter. Attackers can gain full control of affected devices without authentication. All users of DIR-846W A1 routers with firmware version 100A43 are affected.
💻 Affected Systems
- D-Link DIR-846W A1
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of router allowing attackers to intercept all network traffic, install persistent malware, pivot to internal network devices, and use the router as part of a botnet.
Likely Case
Router takeover leading to DNS hijacking, credential theft from network traffic, and deployment of malware to connected devices.
If Mitigated
Limited impact if router is behind firewall with strict inbound rules and network segmentation prevents lateral movement.
🎯 Exploit Status
Proof of concept code is publicly available on GitHub. The exploit requires sending a single crafted HTTP POST request.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for latest patched version
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: Yes
Instructions:
1. Visit D-Link support website 2. Download latest firmware for DIR-846W A1 3. Log into router admin interface 4. Navigate to firmware update section 5. Upload and apply new firmware 6. Reboot router
🔧 Temporary Workarounds
Disable remote administration
allPrevent external access to router administration interface
Log into router admin -> System -> Remote Management -> Disable
Network segmentation
allIsolate router management interface from user networks
Configure VLANs to separate management traffic
🧯 If You Can't Patch
- Replace affected router with updated model
- Place router behind firewall with strict inbound rules blocking all unnecessary ports
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface. If version is 100A43, device is vulnerable.Check Version:
Log into router web interface and check System -> Firmware InformationVerify Fix Applied:
After updating, verify firmware version is newer than 100A43 and test with known exploit payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to router management interface
- Commands executed via web interface logs
- Unexpected configuration changes
Network Indicators:
- HTTP POST requests containing shell commands to router IP
- Unusual outbound connections from router
SIEM Query:
source="router_logs" AND (method="POST" AND uri="*lan(0)_dhcps_staticlist*" AND payload="*;*" OR payload="*|*" OR payload="*`*" OR payload="*$(*")