From security-advisories at freebsd.org Thu Oct 2 00:39:20 2008
From: security-advisories at freebsd.org (FreeBSD Security Advisories)
Date: Thu Oct 2 00:39:28 2008
Subject: [FreeBSD-Announce] FreeBSD Security Advisory FreeBSD-SA-08:10.nd6
Message-ID: <200810020039.m920dJJV025606@freefall.freebsd.org>
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=============================================================================
FreeBSD-SA-08:10.nd6 Security Advisory
The FreeBSD Project
Topic: IPv6 Neighbor Discovery Protocol routing vulnerability
Category: core
Module: sys_netinet6
Announced: 2008-10-01
Credits: David Miles
Affects: All supported versions of FreeBSD.
Corrected: 2008-10-01 00:32:59 UTC (RELENG_7, 7.1-PRERELEASE)
2008-10-01 00:32:59 UTC (RELENG_7_0, 7.0-RELEASE-p5)
2008-10-01 00:32:59 UTC (RELENG_6, 6.4-PRERELEASE)
2008-10-01 00:32:59 UTC (RELENG_6_3, 6.3-RELEASE-p5)
CVE Name: CVE-2008-2476
For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, security branches, and the
following sections, please visit .
I. Background
IPv6 nodes use the Neighbor Discovery protocol to determine the link-layer
address of other nodes, find routers, and maintain reachability information.
The Neighbor Discovery protocol uses Neighbor Solicitation (ICMPv6 type 135)
to query target nodes for their link-layer addresses.
II. Problem Description
IPv6 routers may allow "on-link" IPv6 nodes to create and update the
router's neighbor cache and forwarding information. A malicious IPv6 node
sharing a common router but on a different physical segment from another
node may be able to spoof Neighbor Discovery messages, allowing it to update
router information for the victim node.
III. Impact
An attacker on a different physical network connected to the same IPv6
router as another node could redirect IPv6 traffic intended for that node.
This could lead to denial of service or improper access to private network
traffic.
IV. Workaround
Firewall packet filters can be used to filter incoming Neighbor
Solicitation messages but may interfere with normal IPv6 operation if not
configured carefully.
Reverse path forwarding checks could be used to make gateways, such as
routers or firewalls, drop Neighbor Solicitation messages from
nodes with unexpected source addresses on a particular interface.
IPv6 router administrators are encouraged to read RFC 3756 for further
discussion of Neighbor Discovery security implications.
V. Solution
NOTE WELL: The solution described below causes IPv6 Neighbor Discovery
Neighbor Solicitation messages from non-neighbors to be ignored.
This can be re-enabled if required by setting the newly added
net.inet6.icmp6.nd6_onlink_ns_rfc4861 sysctl to a non-zero value.
Perform one of the following:
1) Upgrade your vulnerable system to 6-STABLE, or 7-STABLE, or to the
RELENG_7_0, or RELENG_6_3 security branch dated after the correction
date.
2) To patch your present system:
The following patches have been verified to apply to FreeBSD 6.3 and
7.0 systems.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
[FreeBSD 6.3]
# fetch http://security.FreeBSD.org/patches/SA-08:10/nd6-6.patch
# fetch http://security.FreeBSD.org/patches/SA-08:10/nd6-6.patch.asc
[FreeBSD 7.0]
# fetch http://security.FreeBSD.org/patches/SA-08:10/nd6-7.patch
# fetch http://security.FreeBSD.org/patches/SA-08:10/nd6-7.patch.asc
b) Apply the patch.
# cd /usr/src
# patch < /path/to/patch
c) Recompile your kernel as described in
and reboot the
system.
VI. Correction details
The following list contains the revision numbers of each file that was
corrected in FreeBSD.
Branch Revision
Path
- -------------------------------------------------------------------------
RELENG_6
src/sys/netinet6/in6.h 1.36.2.10
src/sys/netinet6/in6_proto.c 1.32.2.10
src/sys/netinet6/nd6.h 1.19.2.4
src/sys/netinet6/nd6_nbr.c 1.29.2.11
RELENG_6_3
src/UPDATING 1.416.2.37.2.10
src/sys/conf/newvers.sh 1.69.2.15.2.9
src/sys/netinet6/in6.h 1.36.2.8.2.1
src/sys/netinet6/in6_proto.c 1.32.2.8.2.1
src/sys/netinet6/nd6.h 1.19.2.2.6.1
src/sys/netinet6/nd6_nbr.c 1.29.2.9.2.1
RELENG_7
src/sys/netinet6/in6.h 1.51.2.2
src/sys/netinet6/in6_proto.c 1.46.2.3
src/sys/netinet6/nd6.h 1.21.2.2
src/sys/netinet6/nd6_nbr.c 1.47.2.3
RELENG_7_0
src/UPDATING 1.507.2.3.2.9
src/sys/conf/newvers.sh 1.72.2.5.2.9
src/sys/netinet6/in6.h 1.51.4.1
src/sys/netinet6/in6_proto.c 1.46.4.1
src/sys/netinet6/nd6.h 1.21.4.1
src/sys/netinet6/nd6_nbr.c 1.47.4.1
- -------------------------------------------------------------------------
VII. References
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2476
http://www.kb.cert.org/vuls/id/472363
The latest revision of this advisory is available at
http://security.FreeBSD.org/advisories/FreeBSD-SA-08:10.nd6.asc
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From pc at eurobsdcon.org Thu Oct 9 09:56:13 2008
From: pc at eurobsdcon.org (Program Committee)
Date: Thu Oct 9 11:22:16 2008
Subject: [FreeBSD-Announce] Reminder for EuroBSDCon 2008
Message-ID: <20081009095610.GA50439@keltia.freenix.fr>
Hi,
This is a reminder about the upcoming (next week!) EuroBSDCon 2008 conference,
held this year in Strasburg, FRANCE.
Registration is here:
http://eurobsdcon2008.eventbrite.com/
It also allows registration (and displays the schedule) for tutorials.
http://2008.eurobsdcon.org/
The talks schedule is available here :
http://2008.eurobsdcon.org/talks.html
The tutorials schedule is available here :
http://2008.eurobsdcon.org/tutorials.html
There is a 20% discount for students (use discount code Student when
registering). You can also for a travel grant to the FreeBSD Foundation
for details ask board@FreeBSDFoundation.org
For FreeBSD developers, there is also the FreeBSD DevSummit. See
http://wiki.freebsd.org/200810DevSummit
It is open to all src/www/doc/ports committers & guests.
We hope to see you all next week !
From matt at ixsystems.com Wed Oct 22 18:37:34 2008
From: matt at ixsystems.com (Matt Olander)
Date: Wed Oct 22 20:07:19 2008
Subject: [FreeBSD-Announce] meetBSD California - FreeBSD 15 Year Anniversary
Party - 3 weeks!
Message-ID: <9740caf0810221115u6d3cb6c4obe2f73c11385f998@mail.gmail.com>
Hi all,
The 2 day meetBSD conference and FreeBSD 15 year Anniversary party at
the Googleplex in Mountain View, California on November 15th and 16th
is a little over 3 weeks away! If you haven't registered for the
conference yet, please do so if you are planning on attending. The
conference is free to attend and the party is $50 dollars for you and
a guest. This includes catered dinner and drinks at a private party
being held at the Buddha Lounge in Mountain View.
Although the conference is free, you *must* register in advance, no
registrations will be accepted at the door. Don't miss out on some
great talks, good food, awesome schwag, andthe chance to celebrate
FreeBSD's 15th birthday with the rest of the community!
You can sign up and find more information including the conference
schedule, speaker info, and venue directions and information at
http://www.meetBSD.com.
There will also be a 2 day FreeBSD Developer's Summit the 2 days
following meetBSD. More information on the FreeBSD developer's summit
is at http://wiki.freebsd.org/200811DevSummit.
See you there!
-matt
--
Matt Olander
meetBSD California
www.meetbsd.com
From deb at freebsd.org Thu Oct 23 18:18:06 2008
From: deb at freebsd.org (Deb Goodkin)
Date: Thu Oct 23 18:24:30 2008
Subject: [FreeBSD-Announce] Accepting Travel Grant Applications for meetBSD
Message-ID: <4900B871.3080901@freebsd.org>
Calling all FreeBSD developers needing assistance with travel expenses
to MeetBSD.
The FreeBSD Foundation will be providing a limited number of travel
grants to individuals requesting assistance. Please fill out and submit
the Travel Grant Request Application at
http://www.freebsdfoundation.org/documents/TravelRequestForm.pdf by
October 31, 2008 to apply for this grant.
How it works:
This program is open to FreeBSD developers of all sorts (kernel hackers,
documentation authors, bugbusters, system administrators, etc). In some
cases we are also able to fund non-developers, such as active community
members and FreeBSD advocates.
(1) You request funding based on a realistic and economical estimate of
travel costs (economy airfare, trainfare, ...), accommodations
(conference hotel and sharing a room), and registration or tutorial
fees. If there are other sponsors willing to cover costs, such as your
employer or the conference, we prefer you talk to them first, as our
budget is limited. We are happy to split costs with you or another
sponsor, such as just covering airfare or board.
If we are an official sponsor of a conference and you are speaking at
the conference, we expect that conference to cover your travel costs,
and will most likely not approve your direct request to us.
(2) We review your application and if approved, authorize you to seek
reimbursement up to a limit. We consider several factors, including
our overall and per-event budgets, and (quite importantly) the
benefit to the community by funding your travel.
Most rejected applications are rejected because of an over-all limit on
travel budget for the event or year, due to unrealistic or uneconomical
costing, or because there is an unclear or unconvincing argument that
funding the application will directly benefit the FreeBSD Project.
Please take these points into consideration when writing your application.
(3) We reimburse costs based on actuals (receipts), and by check or bank
transfer. We require you submit a report on your trip, which we may
show to current or potential sponsors, and may include in our quarterly
newsletter.
There's some flexibility in the mechanism, so talk to us if something
about the model doesn't quite work for you or if you have any questions.
The travel grant program is one of the most effective ways we can
spend money to help support the FreeBSD Project, as it helps developers
get together in the same place at the same time, and helps advertise and
advocate FreeBSD in the larger community.
Thank You,
The FreeBSD Foundation
From deb at freebsd.org Fri Oct 24 15:03:12 2008
From: deb at freebsd.org (Deb Goodkin)
Date: Fri Oct 24 16:16:01 2008
Subject: [FreeBSD-Announce] Foundation End-of-Year Fund Raising Drive!
Message-ID: <4901E3A9.1090802@freebsd.org>
Dear FreeBSD Community,
The FreeBSD Foundation is kicking off our End-of-Year Fund Raising
Drive! Our goal this year is to raise over $300,000. So far we have
raised over $181,000 this year. We are little more than half way to
our goal. That?s where you come in?
Why do we need donations?
The goal of the FreeBSD Project is to provide software that may be used
for any purpose -- and without strings attached. Our mission is to
support the FreeBSD Project and community. Our funding comes from people
like you ? those who are determined to keep FreeBSD free!
How have we spent the money this year?
? Sponsored FreeBSD related conferences like BSDCan, EuroBSDCon,
AsiaBSDCon, meetBSD, and NYCBSDCon. We also sponsored FreeBSD developer
summits in Ottawa and Cambridge.
? Provided 22 travel grants and funding to individuals to attend
these conferences this year.
? Provided legal support for the project on issues like understanding
the GPLv3 impact on FreeBSD, providing a privacy policy, trademark
ownership and permission, and other legal issues that come up.
? Provided grants for projects that improve FreeBSD, like
Java binaries, Network Stack Virtualization, and Improving Hardware
Performance Counter Support.
? Provided equipment for developers working to improve FreeBSD and
projects like the NetPerf cluster. Facilitated donation of NetApp filer,
32-core hardware, and 10 Gigabit equipment for project continuity
planning and the NetPerf Cluster.
Your financial support is critical for the FreeBSD Project. Please help
us keep FreeBSD free. Go to
http://www.freebsdfoundation.org/donate/
to donate (any amount will help). And thank you for your continued
support of the FreeBSD Foundation.
Thank You,
The FreeBSD Foundation