Unrestricted File Upload in D-Link DNS-320

Executive Summary

This vulnerability is in D-Link DNS-320 version 1.0.2, specifically in the file /mydlink/multi_uploadify.php. It allows attackers to upload files without restrictions by manipulating the Filedata[] argument. The attack can be executed remotely, and the exploit is publicly available.

Useful 0 Not Useful 0

Detection Guidance

Detecting this vulnerability may involve checking for unauthorized file uploads or suspicious activity in the /mydlink/multi_uploadify.php endpoint. Monitor network traffic for POST requests to this path with unusual file extensions or parameters. Use tools like Wireshark or tcpdump to inspect HTTP traffic targeting the device.

Useful 0 Not Useful 0

Impact Analysis

An attacker could exploit this to upload malicious files to your device, potentially leading to remote code execution, data theft, or further compromise of your network. Unrestricted file uploads may also allow malware distribution or unauthorized access.

Useful 0 Not Useful 0

Compliance Impact

The vulnerability allows unrestricted file uploads, which could lead to unauthorized access or execution of malicious files. This may violate data protection requirements under GDPR (e.g., integrity and confidentiality of personal data) and HIPAA (e.g., unauthorized access to protected health information).

Useful 0 Not Useful 0

Mitigation Strategies

Immediately update the D-Link DNS-320 firmware to the latest version if an update is available. Disable remote access to the device if not required. Block external access to /mydlink/multi_uploadify.php via firewall rules. Monitor logs for signs of exploitation attempts.

Useful 0 Not Useful 0