Security problems with sudo

Thiago Macieira thiago at kde.org
Sun May 17 13:40:40 BST 2009


John Tapsell wrote:
>2009/5/17 Thiago Macieira <thiago at kde.org>:
>> John Tapsell wrote:
>>>  Now the question is..  is there any way to protected against this?
>>
>> No. If your environment is already infected, your using of sudo gives
>> the privilege elevation.
>>
>> If you want to protect against that, don't elevate privileges using
>> sudo. Use ssh -Y.
>
>How would that work?  If you run ssh locally, you have the same
>problems.  A program could simply run a key logger.  If you run
>remotely but ssh in as the user first, then you have the same problem.
> If you run remotely and ssh in directly as root, then that goes
>against the usual restriction to prevent remote root login.

I think ssh-askpass grabs the keyboard, which means it won't work if 
something else grabbed the keyboard.

-- 
  Thiago Macieira  -  thiago (AT) macieira.info - thiago (AT) kde.org
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