[Oisf-users] IPv6 & Extension header

[Victor Julien]

On 04/03/2012 03:06 PM, Victor Julien wrote:
> On 04/03/2012 11:28 AM, Michel SABORDE wrote:
>> The pcap is attach to this mail.
>> I tried with the same rule as before and no alert is trigerred.
>> I already tried reading the pcap with suricata so this pcap should
>> reproduce the issue.
>> I may also have found something weird in fragmented ICMPv6 Echo Request
>> / Reply.
> 
> I think I found the issue. For some reason the reassembled packet
> contains the ethernet header as well, while the decoder doesn't expect
> that. Working on a fix.

Partial fix pushed. Alert now fires. Http.log doesn't show the request
though, will look at that tomorrow.

> Thanks,
> Victor
> 
>>  
>> Michel
>> Le 3 avril 2012 11:05, Victor Julien <victor at inliniac.net
>> <mailto:victor at inliniac.net>> a écrit :
>>
>>     No, it should just work. You can't even disable it.
>>
>>     If it doesn't work, can you share a pcap showing the issue?
>>
>>     On 04/03/2012 11:03 AM, Michel SABORDE wrote:
>>     > Do i need to activate something in suricata config file to enable ipv6
>>     > defrag ?
>>     > Because right now, my current config does not enable ipv6 defrag.
>>     >
>>     > Michel
>>     > Le 2 avril 2012 11:40, Michel SABORDE <michel.saborde at gmail.com
>>     <mailto:michel.saborde at gmail.com>
>>     > <mailto:michel.saborde at gmail.com
>>     <mailto:michel.saborde at gmail.com>>> a écrit :
>>     >
>>     >     I just tried my previous tests with the current git version
>>     and ipv6
>>     >     support is much much better.
>>     >     I think, you should consider adding a note on the website to tell
>>     >     people who wants a real IPv6 support no to use the current stable
>>     >     version but use the git instead.
>>     >
>>     >     Michel
>>     >     Le 2 avril 2012 08:44, Victor Julien <victor at inliniac.net
>>     <mailto:victor at inliniac.net>
>>     >     <mailto:victor at inliniac.net <mailto:victor at inliniac.net>>> a
>>     écrit :
>>     >
>>     >         Cool, thanks for checking.
>>     >
>>     >         On 03/30/2012 09:50 PM, rmkml wrote:
>>     >         > Sorry for disturb Victor,
>>     >         > It's not a FP.
>>     >         > Regards
>>     >         > Rmkml
>>     >         >
>>     >         >
>>     >         > On Fri, 30 Mar 2012, rmkml wrote:
>>     >         >
>>     >         >> Hi Victor,
>>     >         >>
>>     >         >> First, big thx you for your time and skills!
>>     >         >>
>>     >         >> Yes maybe a new FP with ip_proto option on ipv6 cause FP...
>>     >         >> In my memory, if you create a rule with alert ip ...
>>     >         ip_proto:30, with
>>     >         >> ipv6 pcap: suricata fire...
>>     >         >> Can you check? if confirm Im open a new ticket on redmine.
>>     >         >>
>>     >         >> Best Regards
>>     >         >> Rmkml
>>     >         >>
>>     >         >>
>>     >         >> On Fri, 30 Mar 2012, Victor Julien wrote:
>>     >         >>
>>     >         >>> On 03/29/2012 11:58 PM, rmkml wrote:
>>     >         >>>> and Im found a new FP!
>>     >         >>>
>>     >         >>> What did you find?
>>     >         >>
>>     >         >
>>     >
>>     >
>>     >         --
>>     >         ---------------------------------------------
>>     >         Victor Julien
>>     >         http://www.inliniac.net/
>>     >         PGP: http://www.inliniac.net/victorjulien.asc
>>     >         ---------------------------------------------
>>     >
>>     >         _______________________________________________
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>>     <mailto:Oisf-users at openinfosecfoundation.org>
>>     >         <mailto:Oisf-users at openinfosecfoundation.org
>>     <mailto:Oisf-users at openinfosecfoundation.org>>
>>     >        
>>     http://lists.openinfosecfoundation.org/mailman/listinfo/oisf-users
>>     >
>>     >
>>     >
>>
>>
>>     --
>>     ---------------------------------------------
>>     Victor Julien
>>     http://www.inliniac.net/
>>     PGP: http://www.inliniac.net/victorjulien.asc
>>     ---------------------------------------------
>>
>>
> 
> 


-- 
---------------------------------------------
Victor Julien
http://www.inliniac.net/
PGP: http://www.inliniac.net/victorjulien.asc
---------------------------------------------