Authenticated OS Command Injection in TOTOLINK X2000R Router

Executive Summary

This is an OS command injection vulnerability in the TOTOLINK X2000R router firmware. It exists in the formWizard newPass functionality, allowing an attacker to inject malicious commands via a crafted HTTP request. Successful exploitation can lead to arbitrary code execution on the device.

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Detection Guidance

To detect this vulnerability, monitor HTTP traffic for requests targeting the formWizard newPass functionality in TOTOLINK X2000R devices. Check for unusual or malformed POST requests to /cgi-bin/formWizard.cgi with parameters like newPass. Use network scanners to identify vulnerable devices by checking firmware versions and exposed admin interfaces.

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Impact Analysis

An attacker could gain control of your router, allowing them to monitor network traffic, redirect you to malicious sites, or use your network for illegal activities. Since it requires authentication, attackers would need valid credentials, but this could be obtained through other means like phishing.

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Compliance Impact

This vulnerability allows arbitrary code execution via authenticated HTTP requests, which could lead to unauthorized access to sensitive data. Such breaches may violate GDPR's data protection requirements and HIPAA's safeguards for protected health information if exploited.

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Mitigation Strategies

Immediately update the TOTOLINK X2000R firmware to the latest patched version if available. Disable remote administration access to the device if not required. Restrict network access to the device's admin interface using firewalls. Monitor logs for suspicious HTTP requests targeting /cgi-bin/formWizard.cgi.

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