From owner-freebsd-questions@FreeBSD.ORG Sun Nov 9 06:26:51 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id D7AEC16A4CE for ; Sun, 9 Nov 2003 06:26:51 -0800 (PST) Received: from gaultopia.org (yttrium.4ph.com [66.197.0.170]) by mx1.FreeBSD.org (Postfix) with ESMTP id E1BF843FE9 for ; Sun, 9 Nov 2003 06:26:50 -0800 (PST) (envelope-from krs@gaultopia.org) Received: (qmail 8792 invoked by uid 1009); 9 Nov 2003 14:26:48 -0000 From: krs@gaultopia.org Date: Sun, 9 Nov 2003 09:26:48 -0500 To: freebsd-questions@freebsd.org Message-ID: <20031109142648.GA2843@yttrium.gaultopia.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.4i Subject: Re: vulnerability in su? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Nov 2003 14:26:52 -0000 On Sat, Nov 08, 2003 at 10:49:35PM -0800, Derrick Ryalls wrote: > > > > while recently cvsup'ing my box here at home, i had a weird > > thing happen... > > > > i had already built world, built and installed the kernel, > > installed world (including all > > appropriate reboots), and when i brought it back up, but > > prior to running mergemaster, i > > popped the jumper on the circuit the box is on. my ups is > > somewhat wimpy, and only lasts > > a couple minutes (the fuse trips all the time too.. stupid > > apartment wiring can't handle > > 2 computers and the washer and dryer at once =P ) so i made > > it a priority to go ahead and > > shut the box down. after fixing said jumper and bring the > > box back up i noticed that i > > could now su like a madman, without ever being prompted for > > passwords. i then remembered > > that i hadn't run mergemaster yet, so i ran it again and > > rebooted for safe measure and su > > started asking for passwords again. > > > > I think the only time this happens is if the root password is blank. It > is possible that one of your mergemaster runs put in the default root > password (blank). > > well, it wasn't just the root password... for example i was able to login to one of my non-wheel accounts, su to my personal account (which is in wheel), and then su right to root as well. in addition, none of the passwords were actually blank, because i actually plugged a monitor and keyboard into the box and logged in locally as root, which required me to put my password in. all of my accounts did, in fact. -kirt