Somewhat OT: Is Full Command Logging Possible?

Devin Teske devin.teske at fisglobal.com
Wed Dec 19 02:03:33 UTC 2012


On Dec 18, 2012, at 5:43 PM, Tim Daneliuk wrote:

> On 12/18/2012 07:33 PM, Devin Teske wrote:
>> 
>> On Dec 18, 2012, at 5:18 PM, Tim Daneliuk wrote:
>> 
> 
>>>> 
>>> 
>>> One further question, if I may.  If I do this:
>>> 
>>>   sudo su -
>>> 
>>> Will log_input record everything I do once I've been promoted to
>>> root?  I ask because my initial experiments seem to show that all
>>> that's getting recorded is the content of the sudo command itself,
>>> not the subsequent actions…
>>> 
>> 
>> Correct, sudo is blind to the actions performed once the command requested is executed (in this case, "su" and subsequently a shell followed by more actions).
>> 
> 
> Actually, I just tried this with both log_input and log_output options enabled.
> It seems that it *can* see into the promoted shell with a few caveats:
> 
>  - Command output is logged immediately, but command inputs appear to only
>    be written to the log when you exit the promoted shell.  This may be
>    not quite right - there may have not been enough input to cause a
>    write flush to the log.
> 
>  - The logging seems to be able to see into a spawned subshell, but
>    I don't think it can see input/output if you, say, kick off an xterm.
> 

What about if you do "sudo vim" and then type ":sh" ?
-- 
Devin



> 
>> I've suggested the lrexec module for catching everything, or you can look into the auditdistd (distributed auditing collection/collation to a remote/central server) approach, the praudit approach, or any of the other pieces of software mentions.
>> 

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