lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <alpine.LRH.2.21.1906281552350.26685@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.inter>
Date:   Fri, 28 Jun 2019 16:27:28 -0700 (PDT)
From:   Jaskaran Singh Khurana <jaskarankhurana@...ux.microsoft.com>
To:     Eric Biggers <ebiggers@...nel.org>
cc:     linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, agk@...hat.com, snitzer@...hat.com,
        dm-devel@...hat.com, jmorris@...ei.org, scottsh@...rosoft.com,
        mpatocka@...hat.com, gmazyland@...il.com
Subject: Re: [RFC PATCH v5 0/1] Add dm verity root hash pkcs7 sig
 validation.


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.

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ