Date: Fri, 13 May 2005 05:52:46 -0700 From: Kris Kennaway <kris@obsecurity.org> To: "H. S." <security@revolutionsp.com> Cc: freebsd-smp@freebsd.org Subject: Re: FreeBSD-SA-05:09.htt.asc Message-ID: <20050513125246.GA75018@xor.obsecurity.org> In-Reply-To: <59149.81.84.174.188.1115982659.squirrel@mail.revolutionsp.com> References: <59149.81.84.174.188.1115982659.squirrel@mail.revolutionsp.com>
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--SUOF0GtieIMvvwua Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, May 13, 2005 at 06:10:59AM -0500, H. S. wrote: > Hi, >=20 > The advisory isn't very clear on the point I'm making, so, I'd like a > confirmation of the following. >=20 > I have a dual xeon 2.4 server, with HTT disabled in the BIOS: >=20 > CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2399.33-MHz 686-class CPU) > Hyperthreading: 2 logical CPUs > FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs > SMP: AP CPU #1 Launched! >=20 >=20 > >From the advisory: >=20 > "A security flaw involving operating systems running on Hyper-Threading > Technology processors was has been reported." >=20 > Well, this server CPUs surely run processors with HTT technology, it's > just not being used, disabled directly in the BIOS. Am I still vulnerable > to this flaw? The workaround was to disable HTT, so you've already done it. Kris --SUOF0GtieIMvvwua Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFChKMeWry0BWjoQKURAr3fAKDz3Ksgowwf2a+qWoqvN+JMhVMG8ACgr/OC y6NbHu74gQO1PIpxIgVsPZQ= =B8cR -----END PGP SIGNATURE----- --SUOF0GtieIMvvwua--
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