From owner-freebsd-security Mon Nov 18 08:50:59 1996 Return-Path: owner-security Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id IAA26511 for security-outgoing; Mon, 18 Nov 1996 08:50:59 -0800 (PST) Received: from alpha.xerox.com (alpha.Xerox.COM [13.1.64.93]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id IAA26505 for ; Mon, 18 Nov 1996 08:50:55 -0800 (PST) Received: from crevenia.parc.xerox.com ([13.2.116.11]) by alpha.xerox.com with SMTP id <17036(6)>; Mon, 18 Nov 1996 08:50:20 PST Received: from localhost ([127.0.0.1]) by crevenia.parc.xerox.com with SMTP id <177557>; Mon, 18 Nov 1996 08:50:03 -0800 X-Mailer: exmh version 1.6.7 5/3/96 To: Michael Smith cc: freebsd-security@freebsd.org Subject: Re: BoS: Exploit for sendmail smtpd bug (ver. 8.7-8.8.2). In-reply-to: Your message of "Sun, 17 Nov 1996 19:35:04 PST." <199611180335.OAA17231@genesis.atrad.adelaide.edu.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 18 Nov 1996 08:50:01 PST From: Bill Fenner Message-Id: <96Nov18.085003pst.177557@crevenia.parc.xerox.com> Sender: owner-security@freebsd.org X-Loop: FreeBSD.org Precedence: bulk In message <199611180335.OAA17231@genesis.atrad.adelaide.edu.au>you write: >...if it were possible to be non-root and bind to port 25... It is, of course, possible to run as root for *just long enough* to bind to port 25. Then setuid("smtp"). Bill