From owner-freebsd-net Sun Oct 18 01:12:13 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id BAA22041 for freebsd-net-outgoing; Sun, 18 Oct 1998 01:12:13 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id BAA22035 for ; Sun, 18 Oct 1998 01:12:10 -0700 (PDT) (envelope-from luigi@labinfo.iet.unipi.it) Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id HAA03365; Sun, 18 Oct 1998 07:14:02 +0100 From: Luigi Rizzo Message-Id: <199810180614.HAA03365@labinfo.iet.unipi.it> Subject: (minor, possibly irrelevant) security problem ? To: net@FreeBSD.ORG Date: Sun, 18 Oct 1998 07:14:02 +0100 (MET) X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org probably not very important at all, but if i am not mistaken, looking at the "ed" sources, i noticed that for short (< 60 bytes) packets, the driver does not bother to fill the remaining part of the packet with 0's but instead just bumps up the length. This potentially sends out bytes from previous packets to a destination that is not the intended one. Is this something to worry about fixing (and possibly investigate other drivers if they do the same) ? I am not obsessed by security so i don't care too much... cheers luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message From owner-freebsd-net Sun Oct 18 13:35:41 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id NAA05375 for freebsd-net-outgoing; Sun, 18 Oct 1998 13:35:41 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from whistle.com (s205m131.whistle.com [207.76.205.131]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id NAA05369 for ; Sun, 18 Oct 1998 13:35:38 -0700 (PDT) (envelope-from archie@whistle.com) Received: (from smap@localhost) by whistle.com (8.7.5/8.6.12) id NAA15875; Sun, 18 Oct 1998 13:35:08 -0700 (PDT) Received: from bubba.whistle.com(207.76.205.7) by whistle.com via smap (V1.3) id sma015870; Sun Oct 18 13:34:48 1998 Received: (from archie@localhost) by bubba.whistle.com (8.8.7/8.6.12) id NAA09621; Sun, 18 Oct 1998 13:34:48 -0700 (PDT) From: Archie Cobbs Message-Id: <199810182034.NAA09621@bubba.whistle.com> Subject: Re: (minor, possibly irrelevant) security problem ? In-Reply-To: <199810180614.HAA03365@labinfo.iet.unipi.it> from Luigi Rizzo at "Oct 18, 98 07:14:02 am" To: luigi@labinfo.iet.unipi.it (Luigi Rizzo) Date: Sun, 18 Oct 1998 13:34:48 -0700 (PDT) Cc: net@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL38 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Luigi Rizzo writes: > probably not very important at all, but if i am not mistaken, > looking at the "ed" sources, i noticed that for short (< 60 bytes) > packets, the driver does not bother to fill the remaining part of > the packet with 0's but instead just bumps up the length. This > potentially sends out bytes from previous packets to a destination > that is not the intended one. > > Is this something to worry about fixing (and possibly investigate other > drivers if they do the same) ? I'd say it's not a big deal but yes, technically is a security hole. Probably you'd get a debate from the optimization camp, but I'd say it should be fixed to zero out those bytes. -Archie ___________________________________________________________________________ Archie Cobbs * Whistle Communications, Inc. * http://www.whistle.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message From owner-freebsd-net Mon Oct 19 01:32:48 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id BAA05483 for freebsd-net-outgoing; Mon, 19 Oct 1998 01:32:48 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from msf1.swe.ids.dps.casa.es (h026149.nexo.es [195.235.26.149]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id BAA05445 for ; Mon, 19 Oct 1998 01:32:04 -0700 (PDT) (envelope-from jlfreniche@acm.org) Received: from hpswe.swe.ids.dps.casa.es (hpswe.swe.ids.dps.casa.es [172.16.50.100]) by msf1.swe.ids.dps.casa.es (8.8.8/8.8.8) with ESMTP id KAA01175 for ; Mon, 19 Oct 1998 10:19:00 +0200 (CEST) (envelope-from jlfreniche@acm.org) Received: from hpswe.swe.ids.dps.casa.es (localhost [127.0.0.1]) by hpswe.swe.ids.dps.casa.es with SMTP (8.7.6/8.7.3) id KAA09895 for ; Mon, 19 Oct 1998 10:20:56 +0200 (METDST) Message-ID: <362AF667.457C@acm.org> Date: Mon, 19 Oct 1998 10:20:55 +0200 From: "Juan L. Freniche" X-Mailer: Mozilla 3.01Gold (X11; I; HP-UX B.10.20 9000/879) MIME-Version: 1.0 To: net@FreeBSD.ORG Subject: Support for 3COM 905-5 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Is this chip (3COM Fast Etherlink XL PCI 3C905-5) supported? I am using 2.2.7 and the chip is not seen by the kernel (driver vx). When reading the code (/src/sys/pci/if_vx_pci.c), the following signatures are supported: 3COM Fast Etherlink XL PCI 3C905 for device_id 905010b7 and for device_id 905110b7 (and others for 3C590 and 3C900). However, the device_id reported by the chip in my office's PC (a Dell Optiplex GX1, but don't buy it!) is: 905510b7 which is not seen by the vx driver at boot time. I tried (of course) to lie to the kernel by inserting this new device_id in if_vx_pci.c. The kernel see now the device, I can configure it (ifconfig), but when I start to send/receive frames, FreeBSD hangs up. -- Juan L. Freniche To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message From owner-freebsd-net Mon Oct 19 07:56:11 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id HAA12814 for freebsd-net-outgoing; Mon, 19 Oct 1998 07:56:11 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from ifi.uio.no (ifi.uio.no [129.240.64.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id HAA12808 for ; Mon, 19 Oct 1998 07:56:07 -0700 (PDT) (envelope-from dag-erli@ifi.uio.no) Received: from yggdrasil.ifi.uio.no (2602@yggdrasil.ifi.uio.no [129.240.64.182]) by ifi.uio.no (8.8.8/8.8.7/ifi0.2) with ESMTP id QAA22449; Mon, 19 Oct 1998 16:55:41 +0200 (MET DST) Received: (from dag-erli@localhost) by yggdrasil.ifi.uio.no ; Mon, 19 Oct 1998 16:55:41 +0200 (MET DST) Mime-Version: 1.0 To: "Juan L. Freniche" Cc: net@FreeBSD.ORG Subject: Re: Support for 3COM 905-5 References: <362AF667.457C@acm.org> Organization: University of Oslo, Department of Informatics X-url: http://www.stud.ifi.uio.no/~dag-erli/ X-other-addresses: 'finger dag-erli@ifi.uio.no' for a list X-disclaimer-1: The views expressed in this article are mine alone, and do X-disclaimer-2: not necessarily coincide with those of any organisation or X-disclaimer-3: company with which I am or have been affiliated. X-Stop-Spam: http://www.cauce.org/ From: dag-erli@ifi.uio.no (Dag-Erling C. =?iso-8859-1?Q?Sm=F8rgrav?= ) Date: 19 Oct 1998 16:55:39 +0200 In-Reply-To: "Juan L. Freniche"'s message of "Mon, 19 Oct 1998 10:20:55 +0200" Message-ID: Lines: 10 X-Mailer: Gnus v5.5/Emacs 19.34 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by hub.freebsd.org id HAA12809 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org "Juan L. Freniche" writes: > Is this chip (3COM Fast Etherlink XL PCI 3C905-5) supported? > > I am using 2.2.7 and the chip is not seen by the kernel (driver vx). Use the XL driver. 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Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org I've looked through uipc_syscalls.c and uipc_socket.c to try to determine how & where the kernel assigns the local port a client program (ie telnet(1)) binds to. I've specifically looked at connect() and soconnect() but weren't able to determine how they are assigned. Anyone able to give me a hand here? Cheers, Nick -- Email: ncb@poboxes.com - http://www.poboxes.com/ncb Key fingerprint = DE 30 33 D3 16 91 C8 8D A7 F8 70 03 B7 77 1A 2A To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message From owner-freebsd-net Sat Oct 24 23:01:30 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA09806 for freebsd-net-outgoing; Sat, 24 Oct 1998 23:01:30 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from gatekeeper.tsc.tdk.com (gatekeeper.tsc.tdk.com [207.113.159.21]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA09801 for ; Sat, 24 Oct 1998 23:01:29 -0700 (PDT) (envelope-from gdonl@tsc.tdk.com) Received: from sunrise.gv.tsc.tdk.com (root@sunrise.gv.tsc.tdk.com [192.168.241.191]) by gatekeeper.tsc.tdk.com (8.8.8/8.8.8) with ESMTP id XAA00197; Sat, 24 Oct 1998 23:00:48 -0700 (PDT) (envelope-from gdonl@tsc.tdk.com) Received: from salsa.gv.tsc.tdk.com (salsa.gv.tsc.tdk.com [192.168.241.194]) by sunrise.gv.tsc.tdk.com (8.8.5/8.8.5) with ESMTP id XAA01744; Sat, 24 Oct 1998 23:00:47 -0700 (PDT) Received: (from gdonl@localhost) by salsa.gv.tsc.tdk.com (8.8.5/8.8.5) id XAA24646; Sat, 24 Oct 1998 23:00:46 -0700 (PDT) From: Don Lewis Message-Id: <199810250600.XAA24646@salsa.gv.tsc.tdk.com> Date: Sat, 24 Oct 1998 23:00:46 -0700 In-Reply-To: Nicholas Charles Brawn "How does kernel assign local port?" (Oct 25, 4:03pm) X-Mailer: Mail User's Shell (7.2.6 alpha(3) 7/19/95) To: Nicholas Charles Brawn , freebsd-net@FreeBSD.ORG Subject: Re: How does kernel assign local port? Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Oct 25, 4:03pm, Nicholas Charles Brawn wrote: } Subject: How does kernel assign local port? } I've looked through uipc_syscalls.c and uipc_socket.c to try to } determine how & where the kernel assigns the local port a client program } (ie telnet(1)) binds to. I've specifically looked at connect() and } soconnect() but weren't able to determine how they are assigned. Anyone } able to give me a hand here? It's done in in_pcbbind() in netinet/in_pcb.c. In the case of telnet, the call is done by tcp_connect() in netinet/tcp_usrreq.c. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message From owner-freebsd-net Sat Oct 24 23:06:55 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA10342 for freebsd-net-outgoing; Sat, 24 Oct 1998 23:06:55 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from implode.root.com (implode.root.com [198.145.90.17]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA10337 for ; Sat, 24 Oct 1998 23:06:53 -0700 (PDT) (envelope-from xroot@implode.root.com) Received: from implode.root.com (localhost [127.0.0.1]) by implode.root.com (8.8.5/8.8.5) with ESMTP id XAA14600; Sat, 24 Oct 1998 23:07:13 -0700 (PDT) Message-Id: <199810250607.XAA14600@implode.root.com> To: Nicholas Charles Brawn cc: freebsd-net@FreeBSD.ORG Subject: Re: How does kernel assign local port? In-reply-to: Your message of "Sun, 25 Oct 1998 16:03:25 +1100." From: David Greenman Reply-To: dg@root.com Date: Sat, 24 Oct 1998 23:07:13 -0700 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >I've looked through uipc_syscalls.c and uipc_socket.c to try to >determine how & where the kernel assigns the local port a client program >(ie telnet(1)) binds to. I've specifically looked at connect() and >soconnect() but weren't able to determine how they are assigned. Anyone >able to give me a hand here? in_pcbbind() in /sys/netinet/in_pcb.c -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message From owner-freebsd-net Sat Oct 24 23:19:20 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA10971 for freebsd-net-outgoing; Sat, 24 Oct 1998 23:19:20 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from banshee.cs.uow.edu.au (banshee.cs.uow.edu.au [130.130.188.1]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA10964 for ; Sat, 24 Oct 1998 23:19:16 -0700 (PDT) (envelope-from ncb05@banshee.cs.uow.edu.au) Received: (from ncb05@localhost) by banshee.cs.uow.edu.au (8.9.1a/8.9.1) id RAA23806; Sun, 25 Oct 1998 17:18:29 +1100 (EST) Date: Sun, 25 Oct 1998 17:18:29 +1100 (EST) From: Nicholas Charles Brawn X-Sender: ncb05@banshee.cs.uow.edu.au To: Don Lewis cc: freebsd-net@FreeBSD.ORG Subject: Re: How does kernel assign local port? In-Reply-To: <199810250600.XAA24646@salsa.gv.tsc.tdk.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Sat, 24 Oct 1998, Don Lewis wrote: > It's done in in_pcbbind() in netinet/in_pcb.c. In the case of telnet, > the call is done by tcp_connect() in netinet/tcp_usrreq.c. > I have yet to look at the source (not at work box), but why are there two different functions to assign the local port, instead of just one? Cheers, Nick -- Email: ncb@poboxes.com - http://www.poboxes.com/ncb Key fingerprint = DE 30 33 D3 16 91 C8 8D A7 F8 70 03 B7 77 1A 2A To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message From owner-freebsd-net Sat Oct 24 23:23:15 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id XAA11466 for freebsd-net-outgoing; Sat, 24 Oct 1998 23:23:15 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from gatekeeper.tsc.tdk.com (gatekeeper.tsc.tdk.com [207.113.159.21]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id XAA11456 for ; Sat, 24 Oct 1998 23:23:14 -0700 (PDT) (envelope-from gdonl@tsc.tdk.com) Received: from sunrise.gv.tsc.tdk.com (root@sunrise.gv.tsc.tdk.com [192.168.241.191]) by gatekeeper.tsc.tdk.com (8.8.8/8.8.8) with ESMTP id XAA00365; Sat, 24 Oct 1998 23:22:36 -0700 (PDT) (envelope-from gdonl@tsc.tdk.com) Received: from salsa.gv.tsc.tdk.com (salsa.gv.tsc.tdk.com [192.168.241.194]) by sunrise.gv.tsc.tdk.com (8.8.5/8.8.5) with ESMTP id XAA02039; Sat, 24 Oct 1998 23:22:34 -0700 (PDT) Received: (from gdonl@localhost) by salsa.gv.tsc.tdk.com (8.8.5/8.8.5) id XAA24753; Sat, 24 Oct 1998 23:22:33 -0700 (PDT) From: Don Lewis Message-Id: <199810250622.XAA24753@salsa.gv.tsc.tdk.com> Date: Sat, 24 Oct 1998 23:22:33 -0700 In-Reply-To: Nicholas Charles Brawn "Re: How does kernel assign local port?" (Oct 25, 5:18pm) X-Mailer: Mail User's Shell (7.2.6 alpha(3) 7/19/95) To: Nicholas Charles Brawn , Don Lewis Subject: Re: How does kernel assign local port? Cc: freebsd-net@FreeBSD.ORG Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Oct 25, 5:18pm, Nicholas Charles Brawn wrote: } Subject: Re: How does kernel assign local port? } On Sat, 24 Oct 1998, Don Lewis wrote: } } > It's done in in_pcbbind() in netinet/in_pcb.c. In the case of telnet, } > the call is done by tcp_connect() in netinet/tcp_usrreq.c. } > } } I have yet to look at the source (not at work box), but why are there } two different functions to assign the local port, instead of just one? There is only one, tcp_connect() calls in_pcbbind(). There are lots of other places in the code that also call in_pcbbind(), but the call in tcp_connect() is the one that does the trick for telnet. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message