From owner-freebsd-security Thu Nov 8 1: 8:10 2001 Delivered-To: freebsd-security@freebsd.org Received: from virginia.yamato.ibm.co.jp (virginia.yamato.ibm.co.jp [203.141.89.165]) by hub.freebsd.org (Postfix) with ESMTP id 7AD3B37B417 for ; Thu, 8 Nov 2001 01:08:03 -0800 (PST) Received: from ns.trl.ibm.com (ns.trl.ibm.com [9.116.48.18]) by virginia.yamato.ibm.co.jp (8.11.6/3.7W/GW3.3) with ESMTP id fA896j104750; Thu, 8 Nov 2001 18:06:45 +0900 Received: from localhost by ns.trl.ibm.com (AIX4.3/8.9.3/TRL4.5SRV) id SAA26528; Thu, 8 Nov 2001 18:06:44 +0900 To: kris@obsecurity.org Cc: luc@2113.ch, freebsd-security@freebsd.org, kzaraska@student.uci.agh.edu.pl Subject: Re: BUFFER OVERFLOW EXPLOITS In-Reply-To: <20011029132504.A98067@xor.obsecurity.org> References: <3BDD11C8.4746A7BD@2113.ch> <20011029132504.A98067@xor.obsecurity.org> X-Mailer: Mew version 1.94b48 on Emacs 20.7 / Mule 4.0 (HANANOEN) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <20011108180644Y.etoh@trl.ibm.com> Date: Thu, 08 Nov 2001 18:06:44 +0900 From: Hiroaki Etoh X-Dispatcher: imput version 990813(IM119) Lines: 16 Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org At Mon, 29 Oct 2001 13:25:04 -0800, Kris Kennaway wrote: > Because it can cause problems for certain things. The main one I've > found is XFree86, which will fail to run if you build it with > -fstack-protector. I think it's overriding CFLAGS in parts of the > build, which means that certain things aren't being compiled with > -fstack-protector and fail to link at runtime as a result. > > I also found a spurious failure in another application which would > cause it to hit the overflow trap even though nothing was apparently > overflowing. Could you send any bug report to me? I'll fix the problem. Hiroaki Etoh To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message