From owner-freebsd-security@FreeBSD.ORG Thu Dec 1 01:38:13 2011 Return-Path: <owner-freebsd-security@FreeBSD.ORG> Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C02601065670 for <freebsd-security@freebsd.org>; Thu, 1 Dec 2011 01:38:13 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost1.sentex.ca (smarthost1-6.sentex.ca [IPv6:2607:f3e0:0:1::12]) by mx1.freebsd.org (Postfix) with ESMTP id 824538FC0C for <freebsd-security@freebsd.org>; Thu, 1 Dec 2011 01:38:13 +0000 (UTC) Received: from [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a] (saphire3.sentex.ca [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a]) by smarthost1.sentex.ca (8.14.5/8.14.4) with ESMTP id pB11c5HP070347; Wed, 30 Nov 2011 20:38:06 -0500 (EST) (envelope-from mike@sentex.net) Message-ID: <4ED6DA75.30604@sentex.net> Date: Wed, 30 Nov 2011 20:37:57 -0500 From: Mike Tancsa <mike@sentex.net> Organization: Sentex Communications User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 MIME-Version: 1.0 To: d@delphij.net References: <4ED68B4D.4020004@sentex.net> <4ED69B7E.50505@frasunek.com> <4ED6C3C6.5030402@delphij.net> <4ED6D1CD.9080700@sentex.net> <4ED6D577.9010007@delphij.net> In-Reply-To: <4ED6D577.9010007@delphij.net> X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.71 on IPv6:2607:f3e0:0:1::12 Cc: "freebsd-security@freebsd.org" <freebsd-security@freebsd.org>, Xin LI <delphij@delphij.net>, Przemyslaw Frasunek <przemyslaw@frasunek.com> Subject: Re: ftpd security issue ? X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Security issues \[members-only posting\]" <freebsd-security.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>, <mailto:freebsd-security-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-security> List-Post: <mailto:freebsd-security@freebsd.org> List-Help: <mailto:freebsd-security-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-security>, <mailto:freebsd-security-request@freebsd.org?subject=subscribe> X-List-Received-Date: Thu, 01 Dec 2011 01:38:13 -0000 On 11/30/2011 8:16 PM, Xin LI wrote: > > Sorry I patched at the wrong place, this one should do. > > Note however this is not sufficient to fix the problem, for instance > one can still upload .so's that run arbitrary code at his privilege, > which has to be addressed in libc. I need some time to play around > with libc to really fix this one. Hi, Yes, that looks better! With respect to users uploading .so files, I guess why not just upload executables directly ? Although I suppose if they are not allowed to execute anything, this would be a way around that. Now to prod the proftpd folks ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/