netdev - Re: Passive OS fingerprint xtables match.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 5 Jun 2009 15:44:21 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	Patrick McHardy <kaber@...sh.net>
cc:	Evgeniy Polyakov <zbr@...emap.net>, netdev@...r.kernel.org,
	David Miller <davem@...emloft.net>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Netfilter Development Mailinglist 
	<netfilter-devel@...r.kernel.org>
Subject: Re: Passive OS fingerprint xtables match.


On Friday 2009-06-05 15:30, Patrick McHardy wrote:
>Jan Engelhardt wrote:
>> On Friday 2009-06-05 13:54, Patrick McHardy wrote:
>>   
>>>> +
>>>> +		if (optsize > sizeof(opts))
>>>> +			optsize = sizeof(opts);
>>>>       
>>> How can this happen? The doff field can only represent up to 40
>>> bytes of option length.
>>>     
>>
>> Forged packets?
>
>How would that increase the size of the doff field? :)

Ah never mind. Just had to read the RFC... again.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html