On Fri, Apr 3, 2015 at 1:54 PM, D.S. Ljungmark <ljungm...@modio.se> wrote: > On Fri, Apr 3, 2015 at 6:06 AM, Jim Thompson <j...@netgate.com> wrote: >> have you considered that there might not be a relevant patch because >> FreeBSD’s implementation isn’t affected? > > sys/netinet6/nd6_rtr.c > > 300 if (nd_ra->nd_ra_curhoplimit) > 301 ndi->chlim = nd_ra->nd_ra_curhoplimit; > > The only "OUT" in that function I see are tests for: > Not accepting RA > hoplimit on current packet != 255 > not link-local > No extended ipv6 header
It is vulnerable. Harrison Grundy and I worked on a patch, and sent it to secteam@. > > > Based on previous testing ( early March 2015), and reading of the > source, I say that FreeBSD is vulnerable. > > > Regards, > D.S. Ljungmark > > >> >> Jim >> >>> On Apr 2, 2015, at 9:15 PM, Eitan Adler <li...@eitanadler.com> wrote: >>> >>> + FreeBSD lists since I haven't seen any relevant patches (although I >>> might have missed them). >>> >>> ---------- Forwarded message ---------- >>> From: D.S. Ljungmark <ljungm...@modio.se> >>> Date: 2 April 2015 at 10:19 >>> Subject: [oss-security] CVE Request : IPv6 Hop limit lowering via RA >>> messages >>> To: oss-secur...@lists.openwall.com >>> >>> >>> An unprivileged user on a local network can use IPv6 Neighbour >>> Discovery ICMP to broadcast a non-route with a low hop limit, this >>> causing machines to lower the hop limit on existing IPv6 routes. >>> >>> Linux Patch: http://www.spinics.net/lists/netdev/msg322361.html >>> Redhat bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1203712 >>> >>> Projects impacted: Linux kernel, NetworkManager, FreeBSD Kernel >>> >>> >>> Regards, >>> D.S. Ljungmark >>> >>> >>> -- >>> Eitan Adler >>> _______________________________________________ >>> freebsd-net@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-net >>> To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org" >> -- This message is strictly personal and the opinions expressed do not represent those of my employers, either past or present. _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
