CVE-2024-44375
📋 TL;DR
This CVE describes a stack overflow vulnerability in the dbsrv_asp function of D-Link DI-8100 routers running firmware version 16.07.26A1. Attackers can exploit this to execute arbitrary code or cause denial-of-service. Organizations using these specific router models with the vulnerable firmware are affected.
💻 Affected Systems
- D-Link DI-8100
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to full device compromise, network infiltration, and persistent backdoor installation.
Likely Case
Denial-of-service causing router crashes and network disruption, potentially requiring physical reset.
If Mitigated
Limited impact if network segmentation isolates the router and strict access controls prevent exploitation attempts.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repositories, making exploitation straightforward for attackers with basic skills.
🛠️ 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. Visit D-Link support site. 2. Download latest firmware for DI-8100. 3. Log into router admin interface. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Reboot router after update completes.
🔧 Temporary Workarounds
Network Segmentation
allIsolate DI-8100 routers from critical network segments and restrict access to management interfaces.
Access Control Lists
linuxImplement firewall rules to restrict access to router management interfaces to trusted IP addresses only.
iptables -A INPUT -p tcp --dport 80 -s trusted_ip -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Replace vulnerable routers with updated models or different vendors
- Implement strict network monitoring and intrusion detection for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface under System Status or Maintenance section.Check Version:
Login to router web interface and navigate to System Status pageVerify Fix Applied:
Confirm firmware version has been updated to a version newer than v16.07.26A1 and test router functionality.📡 Detection & Monitoring
Log Indicators:
- Multiple connection attempts to router management ports
- Unusual traffic patterns to dbsrv_asp endpoints
- Router crash/reboot logs
Network Indicators:
- Unusual payloads sent to router management interface
- Traffic patterns matching known exploit signatures
SIEM Query:
source="router_logs" AND ("dbsrv_asp" OR "buffer overflow" OR "segmentation fault")