Date: Thu, 2 Oct 2003 12:45:05 -0500 From: "Jacques A. Vidrine" <nectar@FreeBSD.org> To: freebsd-security@FreeBSD.org Subject: Workaround for procfs (was Re: HEADS UP: upcoming security advisories) Message-ID: <20031002174505.GA66829@madman.celabo.org> In-Reply-To: <20031002170844.GA66592@madman.celabo.org> References: <20031002170844.GA66592@madman.celabo.org>
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On Thu, Oct 02, 2003 at 12:08:44PM -0500, Jacques A. Vidrine wrote: > FreeBSD-SA-03:17.procfs > Several similar bugs involving integer arithmetic underflows > or overflows were identified, again by Joost Pol. These bugs > could also lead to kernel memory disclosure or system panic. > Fixes for this issue are in -CURRENT and -STABLE. The security > branches will be addressed during the rest of the day. > <URL: http://www.pine.nl/press/pine-cert-20030902.txt > Regarding this issue: A simple workaround is to unmount /proc. Execute the following command as root: umount -a -t procfs Also, remove or comment out any lines in fstab(5) that reference `procfs', so that it will not be re-mounted at next reboot. Cheers, -- Jacques Vidrine . NTT/Verio SME . FreeBSD UNIX . Heimdal nectar@celabo.org . jvidrine@verio.net . nectar@freebsd.org . nectar@kth.se
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