CVE-2024-28731
📋 TL;DR
This CVE describes a Cross-Site Request Forgery (CSRF) vulnerability in D-Link DWR-2000M 5G CPE routers that allows a local attacker to obtain sensitive information via the port forwarding configuration option. Attackers can trick authenticated users into executing unauthorized actions, potentially exposing network configuration details. This affects users of D-Link DWR-2000M routers with vulnerable firmware versions.
💻 Affected Systems
- D-Link DWR-2000M 5G CPE With Wifi 6 Ax1800
- D-Link DWR 5G CPE DWR-2000M
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could obtain sensitive router configuration information, potentially enabling further attacks or network reconnaissance.
Likely Case
Local attacker obtains port forwarding configuration details, which could reveal internal network structure and services.
If Mitigated
With proper CSRF protections and network segmentation, impact is limited to information disclosure of non-critical configuration data.
🎯 Exploit Status
Exploitation requires crafting malicious web pages that trigger authenticated requests to the router's web interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
Check D-Link support for firmware updates. If available, download latest firmware from official D-Link website and apply through router web interface.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd anti-CSRF tokens to router web interface requests
Network Segmentation
allIsolate router management interface from untrusted networks
🧯 If You Can't Patch
- Restrict access to router web interface to trusted IP addresses only
- Implement strong authentication and session management controls
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in web interface. If version is 1.34ME or earlier, assume vulnerable.Check Version:
Login to router web interface and check System Status or Firmware Information pageVerify Fix Applied:
Verify firmware version has been updated beyond 1.34ME or check for CSRF token implementation in web requests.📡 Detection & Monitoring
Log Indicators:
- Multiple unauthorized port forwarding configuration requests
- CSRF token validation failures
Network Indicators:
- Unusual HTTP requests to router web interface from unexpected sources
SIEM Query:
source_ip=internal AND dest_ip=router_ip AND uri_path CONTAINS 'port_forwarding' AND NOT user_agent=expected_browser