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Groups > linux.debian.user > #161926

Re: grub2 security problem

From David Christensen <dpchrist@holgerdanske.com>
Newsgroups linux.debian.user
Subject Re: grub2 security problem
Date 2015-12-20 05:10 +0100
Message-ID <qHDtL-481-1@gated-at.bofh.it> (permalink)
References <qHm9A-1pd-7@gated-at.bofh.it> <qHtkJ-63n-11@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 12/19/2015 08:59 AM, Joe Pfeiffer wrote:
> Michael Fothergill <michael.fothergill@googlemail.com> writes:
>> I noticed some articles suggesting that there is a security problem in
>> grub2.
>>
>> E.g.
>>
>> http://thehackernews.com/2015/12/hack-linux-grub-password.html
>>
>> ​Is there any substance to this?
>
> Yes, for the microscopic proportion of people who put a password on
> their bootloader in the first place,

+1


(I had never heard of GRUB usernames/ passwords before today.  That 
sounds like more of an annoyance than security.)


A good defense against an attacker with physical access is LUKS 
encryption on all partitions except /boot.  Be sure to buy CPU's with 
AES-NI.


Another, additional, option is self-encrypting drives (SED), which are 
operating system agnostic and protect the entire contents of drive with 
zero CPU overhead.


David

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Thread

grub2 security problem Michael Fothergill <michael.fothergill@googlemail.com> - 2015-12-19 10:40 +0100
  Re: grub2 security problem Joe <joe@jretrading.com> - 2015-12-19 10:50 +0100
  Re: grub2 security problem Teemu Likonen <tlikonen@iki.fi> - 2015-12-19 10:50 +0100
  Re: grub2 security problem Brad Rogers <brad@fineby.me.uk> - 2015-12-19 13:10 +0100
    Re: grub2 security problem Michael Fothergill <michael.fothergill@googlemail.com> - 2015-12-19 13:20 +0100
  Re: grub2 security problem Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-12-19 18:20 +0100
    Re: grub2 security problem David Christensen <dpchrist@holgerdanske.com> - 2015-12-20 05:10 +0100
      Re: grub2 security problem Anders Andersson <pipatron@gmail.com> - 2015-12-20 16:10 +0100
        Re: grub2 security problem <tomas@tuxteam.de> - 2015-12-20 16:30 +0100
          Re: grub2 security problem Gene Heskett <gheskett@shentel.net> - 2015-12-20 16:50 +0100
      Re: grub2 security problem Pascal Hambourg <pascal@plouf.fr.eu.org> - 2015-12-20 17:10 +0100

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