Command Injection in Tenda Router Firmware

Executive Summary

This vulnerability is a command injection flaw in multiple router models including TR1200 v2.4.15, TR3000 v2.4.21, and others. It exists in the system.setclock interface and allows attackers to execute arbitrary commands with root privileges by sending specially crafted input.

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Detection Guidance

To detect this vulnerability, check if any of the affected devices (TR1200 v2.4.15, TR3000 v2.4.21, WR300 v2.4.25, WR1200 v2.4.23, WR1300 v2.4.22, WR1500 v2.3.10, WR3000 v2.4.19, WR3600 v2.3.16, WR6500 v2.3.15) are running on your network. Inspect the system.setclock interface for potential command injection attempts.

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Impact Analysis

An attacker could exploit this to gain full control over the affected device, potentially intercepting network traffic, installing malware, or using the device as part of a botnet. Since the commands run as root, the attacker has complete system access.

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Compliance Impact

This vulnerability allows attackers to execute arbitrary commands as root via a crafted input, which could lead to unauthorized access, data breaches, or system compromise. Such breaches may violate compliance requirements under GDPR, HIPAA, or other standards by exposing sensitive data or failing to maintain system integrity and confidentiality.

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Mitigation Strategies

Immediately update the affected devices to the latest patched versions. If updates are unavailable, restrict network access to the system.setclock interface and monitor for suspicious command execution attempts.

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