serencp

A comprehensive security audit of the `serencp.pl` script is impossible as the actual Perl source code for the server logic was not provided, only the README and LICENSE files. Therefore, this score reflects general design considerations and potential risks inherent in this type of application, rather than specific code vulnerabilities. Potential areas of concern based on the README: - **Unix Socket Exposure**: The server creates Unix sockets (`/tmp/serial_${VM_NAME}`). Permissions on these sockets are critical. If not properly secured, any local user could potentially connect and gain full control of the associated VM's serial console, allowing arbitrary command execution within the VM. - **Input Sanitization**: Writing to a VM serial console (`write` tool) could be an attack vector if input is not properly sanitized. Malicious input might lead to unintended behavior in the VM or, in extreme cases, affect the bridge itself (though less likely given PTY separation). - **Child Processes and Resource Management**: The server forks child processes for each VM bridge. While 'Zombie Management' is mentioned, potential resource exhaustion or unhandled errors in child processes could lead to denial of service or instability. - **No Authentication/Authorization**: The README does not mention any authentication or authorization mechanisms for connecting to the MCP server or the Unix sockets. This implies that any client capable of connecting can interact with the VMs. Without access to the full source code, it's impossible to check for common vulnerabilities like command injection, buffer overflows, improper error handling, hardcoded secrets, or insecure use of `IO::Pty` or other system calls. Running this server without a thorough code review presents an unknown risk, especially in multi-user or sensitive environments.