CVE-2024-48630
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary operating system commands on affected D-Link routers via command injection in the MacAddress parameter. Attackers can exploit this by sending a specially crafted POST request to the vulnerable function. Users of D-Link DIR-882 and DIR-878 routers with specific firmware versions are affected.
💻 Affected Systems
- D-Link DIR-882
- D-Link DIR-878
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete router compromise allowing attackers to install persistent backdoors, intercept all network traffic, pivot to internal networks, and brick the device.
Likely Case
Router takeover enabling traffic interception, DNS hijacking, credential theft, and launching attacks against internal devices.
If Mitigated
Limited impact if routers are behind firewalls with strict inbound filtering and command execution is sandboxed.
🎯 Exploit Status
Exploitation requires authentication to the router's web interface. Public proof-of-concept demonstrates command injection via MacAddress parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check D-Link security bulletin for latest patched firmware
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: Yes
Instructions:
1. Visit D-Link support website. 2. Download latest firmware for your router model. 3. Log into router web interface. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Reboot router after update completes.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to router web interface
Restrict Admin Access
allLimit admin interface access to specific IP addresses
🧯 If You Can't Patch
- Isolate routers in separate network segment with strict firewall rules
- Implement network monitoring for suspicious POST requests to router management interface
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface under System > FirmwareCheck Version:
Login to router web interface and check firmware version in system settingsVerify Fix Applied:
Verify firmware version matches patched version from D-Link advisory📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/SetMACFilters2
- Commands with shell metacharacters in MacAddress parameter
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Unusual outbound connections from router
- DNS queries to suspicious domains from router
- Unexpected traffic patterns from router to internal hosts
SIEM Query:
source="router_logs" AND (uri="/goform/SetMACFilters2" OR (param="MacAddress" AND value MATCHES "[;&|`$()]"))