Re: Errors with -sV and -PE using IPv6

[Will Cladek <william.cladek () nrl navy mil>]

All,

Just tried nmap with the patch against some v6 hosts with RPC ports, and the RPC scan seems to work fine now.  Thanks 
for the help!

-Will

Kris Katterjohn wrote:
> Fyodor wrote:
> > On Wed, Jan 09, 2008 at 12:49:58PM -0500, Will Cladek wrote:
> > > After breaking out my rusty programming skills, I figured out what 
> > > was causing the seg fault with the -sV option in IPv6.  It's the 
> > > following code in scan_engine.cc, starting at line 5101, and then the 
> > > same code again at 5129:
> >
> > Thanks for your research!  As you note, the right way to fix this is
> > to fix send_rpc_query() to handle IPv6 addresses.  It shouldn't be too
> > hard, since it isn't generating raw packets and Nmap already has the
> > code to handle TCP and UDP communication over IPv6.  Anyone want to
> > give it a try?  We support IPv6 for the rest of version detection, so
> > we should do so for RPC scan, unless there is some major difficulty
> > with doing so.
>
> Hey Fyodor!
>
> I've attached a patch which adds this.  I must warn that, while the IPv6 
> code I've added has compiled fine for me, I haven't tested that the 
> actual connect() and things work properly for IPv6 as I don't have a 
> portmap that supports it.
>
> I /have/ tested it using TCP and UDP over IPv4 on my system, and it 
> gives the same results as before the patch.  Since the code is pretty 
> much the same between IPv4 and IPv6, I'm betting that it will work fine 
> as well.
>
> I'd appreciate anybody testing this (IPv4 and IPv6) and letting me know 
> how it goes.
>
> > Cheers,
> > -F
>
> Thanks,
> Kris Katterjohn

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