-T helps you in security in that it marks any data coming from 'the outside' as tainted untill you explicitly untaint it with a regexp.
#!/bin/perl -wT
use strict;

my $taintedVar = $ARGV[0];
if ($taintedVar =~ m/^([0-9]+)$/)
{
  my $UNtaintedVar = $1;
}

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A not-so-smart programmer could use (.*) as a regexp and then the data $1 would be untainted but insecure.

In reply to Re: Re: Re: script-security / custom nagios-check by Jaap
in thread script-security / custom nagios-check by Tomte

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