CVE-2023-24345
📋 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 curTime parameter. Attackers can exploit this to gain full control of affected routers. Only DIR-605L v2.13B01 users are affected.
💻 Affected Systems
- D-Link N300 Wi-Fi Router DIR-605L
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete router compromise leading to persistent backdoor installation, network traffic interception, credential theft, and lateral movement to connected devices.
Likely Case
Router takeover enabling DNS hijacking, credential harvesting from network traffic, and botnet recruitment.
If Mitigated
Limited impact if routers are behind firewalls with strict inbound filtering and regular firmware updates.
🎯 Exploit Status
Exploit code is publicly available in GitHub repositories, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check D-Link advisory for latest patched version
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: Yes
Instructions:
1. Log into router admin 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.
🔧 Temporary Workarounds
Disable WAN management
allPrevents external exploitation by disabling remote administration via WAN interface
Network segmentation
allIsolate router management interface to trusted internal network only
🧯 If You Can't Patch
- Replace affected router with supported model
- Implement strict firewall rules blocking all inbound traffic to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface; if version is v2.13B01, device is vulnerable.Check Version:
Check via router web interface at 192.168.0.1 or 192.168.1.1 under System Status or Firmware sectionVerify Fix Applied:
Verify firmware version has been updated to a version later than v2.13B01.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/formSetWanDhcpplus with long curTime parameters
- Router reboot events
- Configuration changes not initiated by admin
Network Indicators:
- Unexpected outbound connections from router
- DNS queries to suspicious domains
- Port scanning originating from router
SIEM Query:
source="router_logs" AND (uri="/goform/formSetWanDhcpplus" AND param_length>100) OR event="firmware_change"