You can view the commandline arguments of running things via ps aux
The safest way to pass a password into something is a terminal, which is why traditional ssh insists upon it.
Some sort of stream would be better than a commandline arg. Can sshpass read a password from stdin?
Oh! I didn't know about that! So, if my script runs for say 1 minute, will the password be visible for that one minute in
or for the entire session? (Sorry again, if this is a stupid question!)
I'll try to avoid sshpass from now, but I'm not sure if sshpass can read a password from stdin.
Oh! I didn't know about that! So, if my script runs for say 1 minute, will the password be visible for that one minute in
or for the entire session?
Try it and see?
It's possible that sshpass makes some effort to conceal the password once its passed. It could exec() again with different parameters and blank it. But even so, there'd be an unavoidable eyeblink when the password was exposed. Anyone could extract the password with obsessive logging.
These weaknesses are well-known, so sshpass has many safer options fortunately. sshpass can read a file, according to its manpage, so you could do this:
Which should protect the password much better. The temp file won't even be listed in /tmp/ while sshpass is running.
Last edited by Corona688; 09-23-2013 at 03:54 PM..
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