Command Injection in DrayTek VigorSwitch

Executive Summary

This vulnerability is a command injection flaw in multiple DrayTek VigorSwitch models. It occurs in the auth_set function due to insufficient filtering of username and password fields. Attackers with valid admin credentials can exploit crafted input to execute arbitrary commands with root privileges.

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Detection Guidance

Detecting this vulnerability requires checking DrayTek VigorSwitch devices for command injection attempts. Monitor web management interface logs for unusual input in username or password fields. Inspect network traffic for suspicious commands sent to the device. No specific commands are provided in the context.

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Impact Analysis

An attacker could gain full control over the affected DrayTek VigorSwitch device, allowing them to manipulate network traffic, steal sensitive data, or disrupt operations. This requires valid administrative access to the device's web interface.

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Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR and HIPAA requirements for data protection and access controls. Organizations may face compliance penalties and reputational damage if exploited.

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Mitigation Strategies

Immediately update DrayTek VigorSwitch devices to the latest firmware version. Restrict administrative access to the web management interface using IP whitelisting or VPNs. Disable remote administration if not required. Monitor for unauthorized access or command execution attempts.

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