CVE-2024-52711
📋 TL;DR
A buffer overflow vulnerability exists in the ip_position_asp function of DI-8100 firmware via the ip parameter. This could allow attackers to execute arbitrary code or crash the device. Affects users of D-Link DI-8100 devices running vulnerable firmware versions.
💻 Affected Systems
- D-Link DI-8100
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete device compromise, data theft, or use as attack platform
Likely Case
Device crash causing denial of service and potential data loss
If Mitigated
Limited impact with proper network segmentation and input validation
🎯 Exploit Status
Proof of concept available on GitHub; simple buffer overflow exploitation
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check D-Link security advisories for firmware updates
2. Download latest firmware from official D-Link website
3. Upload firmware via web interface
4. Reboot device after installation
🔧 Temporary Workarounds
Network Segmentation
allIsolate DI-8100 devices from untrusted networks
Access Control Lists
linuxRestrict access to device web interface
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
- Deploy network-based IPS with buffer overflow detection rules
- Monitor for abnormal traffic patterns to device web interface
🔍 How to Verify
Check if Vulnerable:
Check firmware version in web interface under System > FirmwareCheck Version:
curl -s http://device-ip/version.asp | grep firmwareVerify Fix Applied:
Verify firmware version is newer than v16.07.26A1📡 Detection & Monitoring
Log Indicators:
- Multiple failed buffer overflow attempts in web logs
- Unusual POST requests to ip_position_asp endpoint
Network Indicators:
- Excessive malformed requests to port 80/tcp
- Traffic patterns matching known exploit signatures
SIEM Query:
source="web_logs" AND uri="*ip_position_asp*" AND (data_length>normal OR contains(malformed))