Date: Thu, 18 Aug 2005 18:20:16 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Maxim.Sobolev@portaone.com Cc: sam@errno.com, FreeBSD-current <freebsd-current@FreeBSD.ORG>, Mike Tancsa <mike@sentex.net> Subject: Re: VIA/ACE PadLock integration with crypto(9). Message-ID: <20050818162016.GC18375@garage.freebsd.pl> In-Reply-To: <4304873F.1060008@portaone.com> References: <6.2.3.4.0.20050812130608.07aaf5f8@64.7.153.2> <20050812181802.GA27996@garage.freebsd.pl> <20050812182032.GB27996@garage.freebsd.pl> <6.2.3.4.0.20050816145557.03314eb8@64.7.153.2> <20050817143804.GH11066@garage.freebsd.pl> <6.2.3.4.0.20050817225907.06f81c50@64.7.153.2> <20050818071648.GA16021@garage.freebsd.pl> <6.2.3.4.0.20050818043546.05558420@64.7.153.2> <20050818115734.GB16933@garage.freebsd.pl> <4304873F.1060008@portaone.com>
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--sHrvAb52M6C8blB9 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 18, 2005 at 04:03:59PM +0300, Maxim Sobolev wrote: +> > +> >Here is the patch: +> > +> > http://people.freebsd.org/~pjd/patches/cryptodev.c.patch +> > +> >And this bug actually is a local DoS on machines which have HW cry= pto +> > +> >and crytodev.ko loaded. +> > +>=20 +> > +>=20 +> > +> Thanks! It fixes my RELENG_6 machine. I guess this goes all the w= ay back to RELENG_4 as well then no ? +> >=20 +> > Most likely... +>=20 +> It probably worth a security advisory. It's only a local DoS on systems with crypto HW and /dev/crypto. Note that /dev/crypto is not needed for fast_ipsec(4) with HW acceleration, nor for geli(8). Workaround is also very simple: # chmod 600 /dev/crypto or: # kldunload cryptodev and you can still do crypto work in software. Administrators should not forget about jails as well, where /dev/crypto is visible by default. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --sHrvAb52M6C8blB9 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFDBLVAForvXbEpPzQRAqnWAJ90ZF/YsZgmhu8MOSVivCstXIlzKgCg5Jcf MSY2M8CxdUMMmguYHDrJkGE= =J4XZ -----END PGP SIGNATURE----- --sHrvAb52M6C8blB9--
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