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Full Discussion: Safely parsing parameters
Top Forums Shell Programming and Scripting Safely parsing parameters Post 302405405 by methyl on Thursday 18th of March 2010 06:48:40 PM
Old 03-18-2010
Sorry drewk, addressed at O/P Corona688.

The original post is unbelievably vague from someone who is concerned about someone executing arbitary code on a unix/Linux? system. Perhaps the post comes from a potential hacker, perhaps not? (I know otherwise).

We have no context. This might be a server open to the Internet offering unsolicited users to type whatever they like. If this is the case I would issue "shutdown -i0 -g0 -y" and crush the server.

On a more practical note. First process and validate any potential unix commands outside of shell.

Last edited by methyl; 03-18-2010 at 08:00 PM.. Reason: spellin
 

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asadmin-shutdown(1AS)						   User Commands					     asadmin-shutdown(1AS)

NAME
asadmin-shutdown, shutdown - brings down the administration server SYNOPSIS
shutdown [--user admin_user][--password admin_password][--host localhost] [--port 4848][--passwordfile filename][--secure|-s] shutdown gracefully brings down the administration server and all the running instances. You must manually start the administration server to bring it up again. OPTIONS
--user administrative user associated for the instance. --password administrative password corresponding to the administrative user. --host host name of the machine hosting the administrative instance. --port administrative port number associated with the administrative host. --passwordfile file containing passwords appropriate for the command (e.g., administrative instance). --secure if true, uses SSL/TLS to communicate with the administrative instance. Example 1: Using the shutdown command asadmin> shutdown --user admin --password adminadmin --host bluestar --port 4848 Waiting for admin server to shutdown... Admin server has been shutdown EXIT STATUS
0 command executed successfully 1 error in executing the command INTERFACE EQUIVALENT
Administration Server page asadmin-start-instance(1AS), asadmin-stop-instance(1AS), asadmin-restart-instance(1AS)asadmin-start-domain(1AS), asadmin-stop-domain(1AS), asadmin-start-appserv(1AS), asadmin-stop-appserv(1AS) J2EE 1.4 SDK March 2004 asadmin-shutdown(1AS)
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