From owner-freebsd-security Sun Jul 22 14:21:14 2001 Delivered-To: freebsd-security@freebsd.org Received: from science.slc.edu (Science.SLC.Edu [198.83.6.248]) by hub.freebsd.org (Postfix) with ESMTP id A75DE37B405; Sun, 22 Jul 2001 14:21:10 -0700 (PDT) (envelope-from aschneid@science.slc.edu) Received: (from aschneid@localhost) by science.slc.edu (8.11.0/8.11.0) id f6MLMWk94328; Sun, 22 Jul 2001 17:22:32 -0400 (EDT) (envelope-from aschneid) Date: Sun, 22 Jul 2001 17:22:32 -0400 From: Anthony Schneider To: Matt Dillon Cc: Hajimu UMEMOTO , brian@Awfulhak.org, ras@e-gerbil.net, roam@orbitel.bg, freebsd-security@FreeBSD.ORG, freebsd-gnats-submit@FreeBSD.ORG Subject: Re: bin/22595: telnetd tricked into using arbitrary peer ip Message-ID: <20010722172232.A94306@mail.slc.edu> References: <200107212234.f6LMYUg79964@hak.lan.Awfulhak.org> <20010723.053051.88524825.ume@mahoroba.org> <200107222117.f6MLHwr11669@earth.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200107222117.f6MLHwr11669@earth.backplane.com>; from dillon@earth.backplane.com on Sun, Jul 22, 2001 at 02:17:58PM -0700 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 16 bytes. On Sun, Jul 22, 2001 at 02:17:58PM -0700, Matt Dillon wrote: > > :It is problem of w(1). `w -n' does forward lookup for IPv4 only and > :IPv6 is not supported at all. When available, login(1) writes > :hostname into utmp instead of IP address. If hostname is saved, `w > :-n' queries A RR for the hostname. > :Real problem is that UT_HOSTSIZE is too short to hold IPv6 address. > :Is there any chance to expand UT_HOSTSIZE in time to 5.0-RELEASE. It > :apparently breaks binary compatibility. > : > :-- > :Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan > :ume@mahoroba.org ume@bisd.hitachi.co.jp ume@{,jp.}FreeBSD.org > > I think if we are going to increase UT_HOSTSIZE, then 5.0 (i.e. now) > is exactly the right time to do it. How large does UT_HOSTSIZE > have to be to accomodate an IPV6 address? > > -Matt > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message