Re: A newbie question

[Thorsten Kukuk <kukuk suse de>]

On Wed, Jul 25, Nicolas Tse wrote:

> Hi everyone,
> 
> I wonder how the PAM module used in login can prevent
> the modification from the hostile user(someone may
> modify all the return values of the PAM module to
> PAM_SUCCESS to cheat the system).

Only root can modify PAM modules in /lib/security. If this
hostile user has write rights for /lib/security, you have
a real problem which has nothing to do with PAM.
If you has not, he cannot modify the return values of a 
module.

  Thorsten


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