Re: [RFC PATCH v5 0/1] Add dm verity root hash pkcs7 sig validation.

[Jaskaran Singh Khurana]

Hello Eric,

On Fri, 28 Jun 2019, Eric Biggers wrote:

> > In a datacenter like environment, this will protect the system from below
> > attacks:
> >
> > 1.Prevents attacker from deploying scripts that run arbitrary executables on the system.
> > 2.Prevents physically present malicious admin to run arbitrary code on the
> >   machine.
> >
> > Regards,
> > Jaskaran
>
> So you are trying to protect against people who already have a root shell?
>
> Can't they just e.g. run /usr/bin/python and type in some Python code?
>
> Or run /usr/bin/curl and upload all your secret data to their server.
>
> - Eric

You are correct, it would not be feasible for a general purpose distro, 
but for embedded systems and other cases where there is a more tightly 
locked-down system.

Regards,
Jaskaran.