CVE-2024-44333
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on affected D-Link routers by sending malicious input to the usb_paswd.asp CGI function. Attackers can gain full control of the device without authentication. Organizations using the specified D-Link router models with vulnerable firmware versions are affected.
💻 Affected Systems
- D-Link DI-7003GV2
- D-Link DI-7100G+V2
- D-Link DI-7100GV2
- D-Link DI-7200GV2
- D-Link DI-7300G+V2
- D-Link DI-7400G+V2
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of router with persistent backdoor installation, credential theft, network pivoting to internal systems, and disruption of network services.
Likely Case
Router takeover for botnet recruitment, DNS hijacking, credential harvesting, and network traffic interception.
If Mitigated
Limited impact if routers are behind firewalls with strict ingress filtering and network segmentation.
🎯 Exploit Status
Public proof-of-concept code exists in the GitHub gist reference. Exploitation requires sending a crafted HTTP request to the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for latest patched versions
Vendor Advisory: https://www.dlink.com/en/security-bulletin/
Restart Required: Yes
Instructions:
1. Visit D-Link security bulletin. 2. Download latest firmware for your model. 3. Log into router admin interface. 4. Navigate to firmware update section. 5. Upload and apply new firmware. 6. Reboot router.
🔧 Temporary Workarounds
Block access to usb_paswd.asp
linuxUse firewall rules to block HTTP requests to the vulnerable CGI endpoint
iptables -A INPUT -p tcp --dport 80 -m string --string "usb_paswd.asp" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "usb_paswd.asp" --algo bm -j DROP
Disable USB functions
allDisable USB-related features in router configuration if not needed
🧯 If You Can't Patch
- Place routers behind dedicated firewalls with strict ingress filtering
- Implement network segmentation to isolate routers from critical internal systems
🔍 How to Verify
Check if Vulnerable:
Check router firmware version in admin interface against affected versions listCheck Version:
Login to router web interface and check System Status or Firmware sectionVerify Fix Applied:
Verify firmware version has been updated to non-vulnerable version and test usb_paswd.asp endpoint is no longer accessible📡 Detection & Monitoring
Log Indicators:
- HTTP requests to usb_paswd.asp with unusual parameters
- Command execution patterns in system logs
- Unexpected process creation
Network Indicators:
- HTTP POST requests to usb_paswd.asp containing shell metacharacters
- Outbound connections from router to unknown IPs
SIEM Query:
source="router_logs" AND (uri="*usb_paswd.asp*" AND (param="*;*" OR param="*|*" OR param="*`*"))