Yasuyuki KOZAKAI wrote:
From: Patrick McHardy <kaber@xxxxxxxxx>
Date: Tue, 09 Sep 2008 08:54:00 +0200
Yasuyuki KOZAKAI wrote:
Hi Patrick,
Please apply the following patch. The option IP6T_OPTS_NSTRICT causes to
ignore rules for options in HBH/DST header.
I think this issue affects few users. Because fortunately (?) man page and
'ip6tables -m hbh --help' does not show --hbh-not-strict option, and
'ip6tables ... --hbh-not-strict' does not work due to incorrect has_arg
value in userland libip6t_hbh.c ;)
I will implement not-strict mode, so the patch leaves the definition of
IP6T_OPTS_NSTRICT. The strict mode is too strict (the specified options
have to be included in order in HBH/DST header) and would be useless
in most senarios.
Since my knowledge of this quite limited - is this fix important
enough so it should go in 2.6.27, or is queuing it for 2.6.28 OK
too?
Actually I am torn between them. I think this is security issue, like that
'iptables -p tcp -j DROP' does not drop TCP packets.
But no ip6tables user meet this issue because of has_arg bug.
I prefer 2.6.27 so that I don't need to fear rare case in several months :)
Applied, thanks, and sorry for the delay.
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