CVE-2023-34800
📋 TL;DR
This CVE describes a command injection vulnerability in D-Link Go-RT-AC750 routers where an attacker can execute arbitrary commands via the service parameter. The vulnerability affects users of D-Link Go-RT-AC750 routers running vulnerable firmware versions. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- D-Link Go-RT-AC750
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to execute arbitrary commands, install malware, pivot to internal networks, and maintain persistent access.
Likely Case
Remote code execution leading to router takeover, network traffic interception, and credential theft from connected devices.
If Mitigated
Limited impact with proper network segmentation and access controls preventing exploitation attempts.
🎯 Exploit Status
Public proof-of-concept exists in GitHub repository, making exploitation straightforward for attackers.
🛠️ 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 website. 2. Download latest firmware for Go-RT-AC750. 3. Log into router admin interface. 4. Navigate to firmware update section. 5. Upload and install new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Network Segmentation
allIsolate router from critical internal networks to limit potential damage
Access Control Lists
allRestrict access to router management interface to trusted IP addresses only
🧯 If You Can't Patch
- Replace affected router with updated model or different vendor
- Implement strict network monitoring and anomaly detection for router traffic
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface against vulnerable versions listed in D-Link advisoryCheck Version:
Log into router web interface and check System Status or Firmware Update sectionVerify Fix Applied:
Verify firmware version has been updated to patched version in router admin interface📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in router logs
- Multiple failed login attempts followed by successful access
- Unexpected service parameter values in web logs
Network Indicators:
- Unusual outbound connections from router
- Traffic patterns indicating command execution
- Port scanning originating from router
SIEM Query:
source="router_logs" AND ("service parameter" OR "command injection" OR unusual_execution)