From owner-freebsd-security@FreeBSD.ORG Fri Apr 22 14:47:42 2005 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CD5F616A4CE; Fri, 22 Apr 2005 14:47:42 +0000 (GMT) Received: from mailhost.stack.nl (vaak.stack.nl [131.155.140.140]) by mx1.FreeBSD.org (Postfix) with ESMTP id 398EF43D69; Fri, 22 Apr 2005 14:47:42 +0000 (GMT) (envelope-from dean@dragon.stack.nl) Received: from dragon.stack.nl (dragon.stack.nl [IPv6:2001:610:1108:5011:207:e9ff:fe09:230]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mailhost.stack.nl (Postfix) with ESMTP id 4AF291F3D6; Fri, 22 Apr 2005 16:47:41 +0200 (CEST) Received: by dragon.stack.nl (Postfix, from userid 1600) id 185585F157; Fri, 22 Apr 2005 16:47:41 +0200 (CEST) Date: Fri, 22 Apr 2005 16:47:41 +0200 From: Dean Strik To: Giorgos Keramidas Message-ID: <20050422144740.GB81889@dragon.stack.nl> References: <42686A29.7090900@hackunite.net> <810a540e05042120493eb79da0@mail.gmail.com> <42687BDD.6000008@hackunite.net> <20050422115200.GA58483@orion.daedalusnetworks.priv> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050422115200.GA58483@orion.daedalusnetworks.priv> X-Editor: VIM Rulez! http://www.vim.org/ X-MUD: Outerspace - telnet://mud.stack.nl:3333 X-Really: Yes User-Agent: Mutt/1.5.9i cc: freebsd-security@freebsd.org cc: Pat Maddox cc: Jesper Wallin Subject: Re: Information disclosure? X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Security issues [members-only posting] List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 Apr 2005 14:47:42 -0000 Giorgos Keramidas wrote: > Putting "deliberate paranoia" aside for a while, you can always _force_ > the syscons buffer to be cleared by toggling between a couple of > different video modes: > > # vidcontrol 80x30 ; vidcontrol 80x25 ; clear ; logout vidcontrol -C is simpler and actually works :-) Changing the videomodes doesn't generally clear the buffer. -- Dean C. Strik Eindhoven University of Technology dean@stack.nl | dean@ipnet6.org | http://www.ipnet6.org/ "This isn't right. This isn't even wrong." -- Wolfgang Pauli