Date: Wed, 2 Apr 2008 19:46:52 +0200 From: Lars Josephsen <none@hunter--dina.kvl.dk.lh.bsd-dk.dk> To: bsd-dk@bsd-dk.dk Subject: Re: virtualisering med freebsd
On Fri, Mar 28, 2008 at 01:12:55PM +0100, Michael Rasmussen wrote:
> Uffe R. B. Andersen writes:
>
> >FreeBSD 7 installerer uden problemer i ren tekst form, men også PCBSD 1.5
> Findes der en grafisk installer til FBSD?
> Jeg kunne, med lidt hiv og sving, installere FBSD7 i VirtualBox. Pt.
> anvendes XFCE4 som windowmanager og desktop, og det performer faktisk
> ganske fornuftigt selv med en dedikeret rammængde på 256MB.
Man skal nok passe lidt paa med VirtualBox: For en maaned siden proevede
jeg at installere OpenBSD 4.3 Beta i VirtualBox, men efter
installationen fik jeg konstant segfaults. Saa jeg sendte dmesg og
core-filer til OpenBSD folkene og her er det svar, jeg fik fra Theo de
Raadt:
> This issue is so raw and low level, that it will affect ALL OTHER
> OPERATING SYSTEMS, LEADING TO MASSIVE SECURITY RISKS.
>
> A standard cpu register is slightly corrupted after returning from
> layers and layers of operating systems.
>
> OpenBSD puts an unmapped page of memory after each memory allocatin.
>
> That is why it crashes reliably on OpenBSD.
>
> On other guest systems, this is definately exploitable.
Det lyder ikke betryggende.
Med venlig hilsen
Lars
-- Lars Josephsen <none@hunter--dina.kvl.dk.lh.bsd-dk.dk> LJ667-DK System Administrator, Department of Natural Sciences Faculty of Life Sciences, University of Copenhagen
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