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Re: 4.22SOC8 Bug Report (scan_engine.c)
From: "Kris Katterjohn" <katterjohn () gmail com>
Date: Sun, 4 Nov 2007 11:33:27 -0600

On 11/3/07, J0hn McClane <john.mcclame () gmail com> wrote:
nmap-dev,

Uname: Linux  2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686
GNU/Linux
Ubuntu 7.10 (gusty)

Nmap 4.22SOC8 compiled from src,  reliably reproduces the following error
given the following options.

sudo nmap -sT -T2 -oA tcp-connect-scan 10.0.0.0/24

Starting Nmap 4.22SOC8 ( http://insecure.org ) at 2007-11-03 19:53 CST
nmap: scan_engine.cc:2868: void sendPingProbe(UltraScanInfo*,
HostScanStats*): Assertion `0' failed.
Aborted (core dumped)

Starting Nmap 4.22SOC8 ( http://insecure.org ) at 2007-11-03 19:55 CST
nmap: scan_engine.cc:2868: void sendPingProbe(UltraScanInfo*,
HostScanStats*): Assertion `0' failed.
Aborted (core dumped)

Starting Nmap 4.22SOC8 ( http://insecure.org ) at 2007-11-03 19:59 CST
nmap: scan_engine.cc:2868: void sendPingProbe(UltraScanInfo*,
HostScanStats*): Assertion `0' failed.
Aborted (core dumped)


I was able to reproduce this, and I've attached a patch that fixes it for me.

Between 4.20 and now, "Global Pings" have been implemented.  This is
where it seemed to occur.  Nmap would send a global ping for ARP,
which called a sendPingProbe() function which didn't have any code
regarding ARP, hence the assertion failure.

Can you try this patch out?

I would commit it, but I'd prefer David and/or Fyodor to take a look
to make sure it's the Right Thing to do.

Thanks,
Kris Katterjohn

Attachment: arpping.patch
Description:


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