CVE-2024-10915
📋 TL;DR
This critical vulnerability allows remote attackers to execute arbitrary operating system commands on affected D-Link NAS devices by manipulating the 'group' parameter in the user account management function. Successful exploitation could lead to complete system compromise. The vulnerability affects D-Link DNS-320, DNS-320LW, DNS-325, and DNS-340L network-attached storage devices.
💻 Affected Systems
- D-Link DNS-320
- D-Link DNS-320LW
- D-Link DNS-325
- D-Link DNS-340L
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with root-level access, data theft, ransomware deployment, and use as pivot point for internal network attacks.
Likely Case
Unauthorized access to sensitive files, installation of backdoors, and disruption of NAS services.
If Mitigated
Limited impact if devices are isolated from internet and have strict network segmentation.
🎯 Exploit Status
Exploit requires authentication to the web interface. Public disclosure includes technical details that could facilitate weaponization.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.dlink.com/
Restart Required: No
Instructions:
1. Check D-Link support site for firmware updates. 2. Download latest firmware for your specific model. 3. Upload firmware via web interface. 4. Apply update and verify installation.
🔧 Temporary Workarounds
Network Isolation
allRemove affected devices from internet-facing networks and restrict access to trusted internal networks only.
Access Control
linuxImplement strict firewall rules to block external access to web management interface (ports 80/443).
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Disable web management interface if not required for operation
- Implement network segmentation to isolate NAS devices from critical systems
🔍 How to Verify
Check if Vulnerable:
Check firmware version date in web interface. If before October 28, 2024, device is vulnerable.Check Version:
Check via web interface: System > Firmware or via SSH: cat /etc/versionVerify Fix Applied:
Verify firmware version has been updated beyond October 28, 2024 release date.📡 Detection & Monitoring
Log Indicators:
- Unusual CGI requests to /cgi-bin/account_mgr.cgi with shell metacharacters in parameters
- Suspicious command execution in system logs
Network Indicators:
- HTTP POST requests to account_mgr.cgi with unusual group parameter values
- Outbound connections from NAS to unexpected destinations
SIEM Query:
source="nas_logs" AND uri="/cgi-bin/account_mgr.cgi" AND (group="*;*" OR group="*|*" OR group="*`*" OR group="*$(*")