Improper Input Validation Leads to OS Command Injection in Management Control

Executive Summary

This vulnerability is an OS command injection flaw in Welotec routers (TK100, TK500-v2, TK500-v3). It allows a remote attacker with high privileges to inject and execute operating system commands with root permissions due to improper input validation in management functions.

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Detection Guidance

To detect this vulnerability, check if your Welotec router models (TK100, TK500-v2, TK500-v3) are running affected firmware versions. Inspect network traffic for unusual command injection attempts in management control functions. Use vulnerability scanners like Nessus or OpenVAS to scan for OS command injection flaws in these devices.

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Impact Analysis

An attacker could take full control of the affected router, execute arbitrary commands, or cause a denial of service. This may lead to network compromise, data theft, or disruption of connected systems.

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Mitigation Strategies

Immediately update the firmware of affected Welotec routers to the latest patched version. Restrict remote access to management interfaces and enforce strong authentication. Monitor network traffic for suspicious activity and disable unnecessary services. Apply network segmentation to limit exposure of vulnerable devices.

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