From owner-freebsd-security Wed Sep 10 16:35:21 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id QAA06603 for security-outgoing; Wed, 10 Sep 1997 16:35:21 -0700 (PDT) Received: from hotlava.com (NU4VtTeKzBZN6E5L8xzP85tcm7zEXidz@internal-mail.hotlava.com [193.67.124.74]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id QAA06556 for ; Wed, 10 Sep 1997 16:34:44 -0700 (PDT) Message-Id: <199709102334.QAA06556@hub.freebsd.org> Received: (qmail 11849 invoked from network); 10 Sep 1997 23:33:46 -0000 Received: from localhost (?eB/QpaavlncW3bYgJsUWDe9s/JWMt053?@127.0.0.1) by localhost with SMTP; 10 Sep 1997 23:33:46 -0000 X-Mailer: exmh version 2.0gamma 1/27/96 To: freebsd-security@FreeBSD.ORG Subject: Re: Kernel Install Permissions Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 11 Sep 1997 01:33:46 +0200 From: Gary Howland Sender: owner-freebsd-security@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk > Jamil J. Weatherbee writes: > > > > This is just a personal opinion, and maybye it is uneducated, but is there > > really some reason for the kernel to be installed chmod 555, wouldn't 544 > > or even maybye 444 do (I'm not to familiar with the bootloader, I would > > guess that it doesn't execute /kernel in the same way a coff binary is > > executed so permissions probably don't matter hunh?) > > Perhaps even 550 or 540 with group kmem or something. Better still make it unmodifiable with chflags (assumming that you're running at a suitable security level). Gary