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
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
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>
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