Re: IPv6 Type 0 Routing Header issues
"George V. Neville-Neil" <gnn@neville-neil.com> Wed, 25 April 2007 02:22 UTC
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Date: Wed, 25 Apr 2007 10:49:25 +0900
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From: "George V. Neville-Neil" <gnn@neville-neil.com>
To: Jari Arkko <jari.arkko@piuha.net>
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Cc: v6ops@ops.ietf.org, ipv6@ietf.org, IPv6 Ops list <ipv6-ops@lists.cluenet.de>
Subject: Re: IPv6 Type 0 Routing Header issues
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At Wed, 25 Apr 2007 00:46:28 +0300, Jari Arkko wrote: > > > > Just in case folks are missing out on this, find below a rather nasty > > security issue. > > > > I cannot say that this is a big surprise, even if the specific attack > is news to me and it has a major impact. Some issues with Type 0 > have been known for years; I think draft-savola-ipv6-rh-ha was the > first to report these. RFC 4294 warns of the issues and RFC 3775 > design was based on the idea of avoiding Type 0 because it > was felt that at some point Type 0 would likely be filtered due > to its problems. Also, draft-ietf-v6ops-security-overview was recently > approved. It notes, among other things that "it may be desirable > to forbid or limit the processing of Type 0 Routing Headers > in hosts and some routers." > > So I think we should take that advice and modify the stacks that > do not do the right thing today. A good first approximation is > to add a configuration knob for processing Type 0 headers > in both hosts and routers, with default set to off. Better > firewall support for doing this would also be needed (without > disabling use of Type 2, of course). > FreeBSD has already committed patches disabling the processing of route header option 0 by default in all 3 of the currently shipping branches (HEAD, 6-STABLE and 5-STABLE). > But we at the IETF also need to draw a conclusion about the > state of Type 0. This feature needs to be retired. The sooner that decision is made the better. Those of us working on the stacks would like to remove this processing if the feature is retired. Best, George Neville-Neil (FreeBSD Security Team and Core Member) -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
- IPv6 Type 0 Routing Header issues Jeroen Massar
- Re: IPv6 Type 0 Routing Header issues Jari Arkko
- Re: IPv6 Type 0 Routing Header issues George V. Neville-Neil
- Re: IPv6 Type 0 Routing Header issues Mohacsi Janos
- Re: IPv6 Type 0 Routing Header issues David Malone
- Re: IPv6 Type 0 Routing Header issues Remi Denis-Courmont
- Re: IPv6 Type 0 Routing Header issues Jun-ichiro itojun Hagino
- Re: IPv6 Type 0 Routing Header issues Paul Vixie
- Re: IPv6 Type 0 Routing Header issues Jun-ichiro itojun Hagino
- Re: IPv6 Type 0 Routing Header issues Rob Austein
- Re: IPv6 Type 0 Routing Header issues Tim Enos
- Question for IPv6 w.g. on [Re: IPv6 Type 0 Routin… Bob Hinden
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Jun-ichiro itojun Hagino 2.0
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Perry Lorier
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Brian E Carpenter
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… David Malone
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… David Malone
- Re: IPv6 Type 0 Routing Header issues Ed Jankiewicz
- Re: IPv6 Type 0 Routing Header issues Gert Doering
- Re: IPv6 Type 0 Routing Header issues Gert Doering
- RE: IPv6 Type 0 Routing Header issues Manfredi, Albert E
- RE: IPv6 Type 0 Routing Header issues Tony Hain
- RE: IPv6 Type 0 Routing Header issues Tony Hain
- RE: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Tony Hain
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… james woodyatt
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… james woodyatt
- Re: IPv6 Type 0 Routing Header issues George V. Neville-Neil
- Re: IPv6 Type 0 Routing Header issues Alun Evans
- Re: IPv6 Type 0 Routing Header issues Jeroen Massar
- Re: IPv6 Type 0 Routing Header issues David Malone
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Jun-ichiro itojun Hagino 2.0
- Re: IPv6 Type 0 Routing Header issues Ebalard, Arnaud
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Ignatios Souvatzis
- itojun2.0 (RE: IPv6 Type 0 Routing Header issues) Jun-ichiro itojun Hagino 2.0
- Re: itojun2.0 (RE: IPv6 Type 0 Routing Header iss… Jun-ichiro itojun Hagino 2.0
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Jari Arkko
- RE: IPv6 Type 0 Routing Header issues Manfredi, Albert E
- RE: IPv6 Type 0 Routing Header issues Tony Hain
- RE: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Dave Thaler
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Tim Hartrick
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Jun-ichiro itojun Hagino 2.0
- RE: IPv6 Type 0 Routing Header issues Jun-ichiro itojun Hagino 2.0
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Jun-ichiro itojun Hagino 2.0
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Theo de Raadt
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Bob Hinden
- RE: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Pekka Savola
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Brian E Carpenter
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Pars Mutaf
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Theo de Raadt
- RE: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Dave Thaler
- RE: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Jun-ichiro itojun Hagino 2.0
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Eric Klein
- Re: IPv6 Type 0 Routing Header issues james woodyatt
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Brian E Carpenter
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Roger Jorgensen
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Jeroen Massar
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Paul Vixie
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Eric Klein
- Re: IPv6 Type 0 Routing Header issues George V. Neville-Neil
- Re: IPv6 Type 0 Routing Header issues Ebalard, Arnaud
- Re: IPv6 Type 0 Routing Header issues gnn
- Re: IPv6 Type 0 Routing Header issues Mini
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Jeroen Massar
- Re: Question for IPv6 w.g. on [Re: IPv6 Type 0 Ro… Eric Klein
- Re: Question for IPv6 w.g. on Kenjiro Cho
- Re: itojun2.0 (RE: IPv6 Type 0 Routing Header iss… Jun-ichiro itojun Hagino 2.0
- Re: itojun2.0 (RE: IPv6 Type 0 Routing Header iss… Jun-ichiro itojun Hagino 2.0
- Re: IPv6 Type 0 Routing Header issues David Malone
- Re: IPv6 Type 0 Routing Header issues Jun-ichiro itojun Hagino 2.0