Date: Mon, 02 Aug 2004 14:18:49 +0200 From: Matteo Riondato <rionda@riondato.com> To: Dag-Erling =?ISO-8859-1?Q?Sm=F8rgrav?= <des@des.no> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/alpha/alpha mem.c src/sys/alpha/confmem.c memdev.h src/sys/conf NOTES files files.alpha files.amd64 ... Message-ID: <1091449128.2201.50.camel@kaiser.sig11.org> In-Reply-To: <xzpu0vlaga6.fsf@dwp.des.no> References: <200408011140.i71BesOt070889@repoman.freebsd.org> <1091447175.2201.48.camel@kaiser.sig11.org> <xzpu0vlaga6.fsf@dwp.des.no>
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--=-dod/U37iRWIQro4t8eXA Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Il Lun, 2004-08-02 alle 14:14, Dag-Erling Sm=F8rgrav ha scritto: > Matteo Riondato <rionda@riondato.com> writes: > > Dag-Erling Sm=F8rgrav wrote: > > > The other good news of course is that it is now possible to build a > > > kernel that does not have /dev/mem and /dev/io - that's pretty > > > significant from a security point of view. Thanks! > > Can you please explain why it's signficant? >=20 > /dev/mem and /dev/io are back doors to a system's memory and hardware, > which allow you to bypass all error and credential checks once you've > gained access to them. > [SNIP] Thanks, You were really clear. Best Regards --=20 Rionda aka Matteo Riondato GUFI Staff Member (http://www.gufi.org) BSD-FAQ-it Main Developer (http://www.gufi.org/~rionda) FreeSBIE BugMeister (http://www.freesbie.org) GPG key at: http://www.riondabsd.net/riondagpg.asc Sent from: kaiser.sig11.org running FreeBSD-5.2-CURRENT --=-dod/U37iRWIQro4t8eXA Content-Type: application/pgp-signature; name=signature.asc Content-Description: Questa parte del messaggio =?ISO-8859-1?Q?=E8?= firmata -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQBBDjEo2Mp4pR7Fa+wRArF1AJ4oLzEBctJ/szz83me1oJe32a8e5wCfev5j aqyNDy0qyVU6J7qEUjKISWQ= =2QGc -----END PGP SIGNATURE----- --=-dod/U37iRWIQro4t8eXA--
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