CVE-2023-24352
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on D-Link N300 Wi-Fi Router DIR-605L devices via a stack overflow in the webpage parameter at /goform/formWPS. Attackers can potentially take full control of affected routers. Only users of the specific D-Link router model with vulnerable firmware are affected.
💻 Affected Systems
- D-Link N300 Wi-Fi Router DIR-605L
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router allowing attackers to intercept all network traffic, modify router settings, install persistent malware, and pivot to internal network devices.
Likely Case
Router takeover leading to DNS hijacking, credential theft from unencrypted traffic, and denial of service for connected devices.
If Mitigated
Limited impact if router is behind firewall with restricted WAN access, though internal attacks remain possible.
🎯 Exploit Status
Public proof-of-concept code exists in GitHub repositories. The vulnerability requires no authentication and has a simple exploitation path.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check D-Link security bulletin for latest patched version
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: Yes
Instructions:
1. Log into router web interface. 2. Navigate to firmware update section. 3. Download latest firmware from D-Link support site. 4. Upload and apply firmware update. 5. Reboot router after update completes.
🔧 Temporary Workarounds
Disable WPS feature
allDisable Wi-Fi Protected Setup (WPS) functionality which may reduce attack surface
Restrict web interface access
allConfigure firewall rules to restrict access to router web management interface
🧯 If You Can't Patch
- Replace affected router with a supported model
- Isolate router in separate network segment with strict firewall rules
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface under System > Firmware or similar sectionCheck Version:
No CLI command - check via web interface at http://router-ip/ or via router admin panelVerify Fix Applied:
Verify firmware version matches or exceeds patched version from D-Link advisory📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/formWPS with long webpage parameter
- Multiple failed login attempts or configuration changes
Network Indicators:
- Unusual outbound connections from router
- DNS changes or unexpected proxy configurations
SIEM Query:
source_ip="router_ip" AND (url_path="/goform/formWPS" OR method="POST" AND uri CONTAINS "formWPS")