Insecure Dependency in Net::DNS with Cygwin (WAS: Cygwin, win98, SA, Perl IO::Socket (Insecure dependency))

[Rafael Kitover]

Here's some information about a bug with Net::DNS when running under taint
mode, previously reported here:

http://www.cygwin.com/ml/cygwin/2004-01/msg01062.html 

------------------------
#!/usr/bin/perl -T

use strict;
use warnings;
use Net::DNS;
use Carp;

$SIG{__DIE__} = sub { confess @_ };

my $res = Net::DNS::Resolver->new(debug => 1);
my  @mx = mx($res, "customoffers.com");
------------------------

The $SIG{__DIE__} generates a backtrace, the debug output and backtrace are
attached to this message.

I've tried the above script both with the CPAN version of Net::DNS and this CVS
snapshot:
http://www.net-dns.org/snaps/2004/01/Net-DNS-2004-01-28.tar.gz 

It seems like Net::DNS is failing to get a packet it likes back from a UDP
query (although the packet looks ok?) and then tries to send a TCP query using
some data coming from the failed UDP query, or something along those lines... 

Sending a report through the form on http://www.net-dns.org/ as well.

-- 
Rafael
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