CVE-2024-57376
📋 TL;DR
This CVE describes a buffer overflow vulnerability in multiple D-Link DSR series routers that allows unauthenticated attackers to execute arbitrary code remotely. Affected users include organizations using D-Link DSR-150, DSR-150N, DSR-250, DSR-250N, DSR-500N, or DSR-1000N routers running firmware versions 3.13 through 3.17B901C.
💻 Affected Systems
- D-Link DSR-150
- D-Link DSR-150N
- D-Link DSR-250
- D-Link DSR-250N
- D-Link DSR-500N
- D-Link DSR-1000N
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router allowing attackers to pivot to internal networks, intercept/modify traffic, install persistent backdoors, or use the device for botnet activities.
Likely Case
Router compromise leading to network disruption, credential theft, or lateral movement into connected systems.
If Mitigated
Limited impact if network segmentation prevents lateral movement and regular monitoring detects anomalous router behavior.
🎯 Exploit Status
The vulnerability requires no authentication and has a CVSS score of 8.8, indicating significant exploitability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: Yes
Instructions:
1. Visit D-Link security bulletin. 2. Download appropriate firmware update for your model. 3. Backup current configuration. 4. Upload and apply firmware update via web interface. 5. Reboot router. 6. Verify firmware version.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected routers from critical internal networks to limit potential lateral movement.
Access Control Lists
allImplement strict firewall rules to limit access to router management interfaces.
🧯 If You Can't Patch
- Replace affected devices with patched or alternative models
- Implement network monitoring and intrusion detection specifically for router compromise indicators
🔍 How to Verify
Check if Vulnerable:
Check router firmware version via web interface: System > Firmware InformationCheck Version:
No CLI command available; use web interface at System > Firmware InformationVerify Fix Applied:
Verify firmware version is above 3.17B901C after patching📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts
- Firmware modification logs
- Unexpected configuration changes
- Abnormal traffic patterns from router
Network Indicators:
- Unusual outbound connections from router
- Traffic redirection
- DNS hijacking
- Port scanning originating from router
SIEM Query:
source="router_logs" AND (event_type="firmware_change" OR event_type="config_change" OR auth_failure_count>5)