CERIO-DT Command Injection Scanner

The CERIO-DT Interface is a web-based management console used in CERIO's DT series routers, which are deployed in small to medium-sized businesses and institutional networks to handle routing, traffic management, and security policies. Network administrators rely on this interface to configure VLANs, firewall rules, and VPN tunnels, ensuring stable and secure connectivity. Its role in critical network operations makes it a prime target for exploitation.

Command injection occurs when the application passes unsanitized user input directly to a system shell, allowing attackers to execute arbitrary OS commands. This vulnerability typically arises from improper input validation in functions that process parameters like IP addresses, ping commands, or diagnostic tools. The CERIO-DT Interface fails to escape or validate these inputs, enabling command execution.

Specifically, the vulnerability is present in the 'Diagnostics' or 'Ping' endpoint, where the 'target' parameter is concatenated into a shell command without sanitization. For example, an attacker can inject commands like '; ls -la' or '| cat /etc/passwd' to execute arbitrary code. This endpoint is accessible to authenticated users, but default credentials or weak passwords can be exploited.

If exploited, an attacker can gain full control over the router, leading to network compromise, data exfiltration, or denial of service. They could modify routing tables, intercept traffic, or pivot to internal systems. The CVSS score of 9.0 reflects the critical nature of this vulnerability, as it requires no complex attack vectors and can cause severe damage to network integrity and confidentiality.