CVE-2024-48634
📋 TL;DR
This CVE describes a command injection vulnerability in D-Link DIR-882 and DIR-878 routers that allows attackers to execute arbitrary operating system commands via a crafted POST request to the SetWLanRadioSecurity function. Attackers can gain full control of affected routers, potentially compromising network security and connected devices. Users of DIR-882 firmware version 130B06 and DIR-878 firmware version 130B08 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 leading to network takeover, credential theft, malware deployment, and persistent backdoor installation.
Likely Case
Router configuration manipulation, network traffic interception, and lateral movement to connected devices.
If Mitigated
Limited impact if routers are behind firewalls with strict inbound filtering and network segmentation.
🎯 Exploit Status
Exploitation requires authentication to the router's web interface, but attackers may leverage default credentials or other vulnerabilities to gain access first.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check D-Link security bulletin for latest patched firmware versions
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
allPrevents external access to router web interface
Log into router web interface > Advanced > Remote Management > Disable
Change Default Credentials
allPrevents unauthorized authentication to router interface
Log into router web interface > Management > Account > Change admin password
🧯 If You Can't Patch
- Isolate routers in separate VLAN with strict firewall rules limiting inbound access
- Implement network monitoring for unusual POST requests to router management interfaces
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface under Status > Firmware InformationCheck Version:
No CLI command - check via web interface at http://router_ip/Status/system.htmlVerify Fix Applied:
Verify firmware version matches or exceeds patched version from D-Link advisory📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /goform/SetWLanRadioSecurity
- Multiple failed login attempts followed by successful authentication
Network Indicators:
- Unusual outbound connections from router to external IPs
- Suspicious commands in HTTP POST payloads to router
SIEM Query:
source="router_logs" AND (uri="/goform/SetWLanRadioSecurity" OR method="POST" AND uri CONTAINS "SetWLanRadioSecurity")