Re: Matching overlapping TCP data segments with differing data

[Peter Maynard via Snort-sigs <snort-sigs () lists snort org>]

Hi Yun, 

That's great. Do you know if these patches have been merged into SNORT
or Bro? I was just playing around with snort 2.9.13-1, and couldn't get
it to trigger.

Thanks,
Pete

On Wed, 2019-09-25 at 15:56 +0200, Yun Zheng Hu wrote:
> Hi,
>
> I made some patches for Snort to support this in the past.
>
> You can find the original patches and other reference material here:
>
> https://github.com/fox-it/quantuminsert
>
> Regards,
> Yun
>
> > On 25 Sep 2019, at 14:30, Peter Maynard via Snort-sigs <
> > snort-sigs () lists snort org> wrote:
> >
> > Hello,
> >
> > I'm looking to create a signature that is able to match on
> > overlapping
> > TCP data segments that have different data.  
> >
> > The reason being for detecting man-on-the-side attacks [1]. This
> > has
> > been implmenting within suricata [2] and was wondering if this were
> > possibile within SNORT?
> >
> > Kind Regards, 
> > Pete
> >
> > [1] https://en.wikipedia.org/wiki/Man-on-the-side_attack
> > [2] h
> > ttps://github.com/OISF/suricata/commit/6f76ac176d70d85fa2a5719dacdc
> > 8fef0ef074dc
> >
> >
> > -- 
> > Pete Maynard 
> > Center for Secure Information Technologies
> > Queen's University Belfast
> > GPG: 0xABB8D69D
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-- 
Pete Maynard
Centre for Secure Information Technologies
0x248FC016ABB8D69D 
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