You may want to take a look at all Config modules. Or just to parse by hand the config text in HoH structure:

my @data = <DATA>;
my $counter = 0;
my $data;


for(@data){
        if(/^Start/../^End/ && ++$counter){
            $data->{$counter}{$1} = $2 if /^(\w+)=(\w+)/
        }
}

use Data::Dumper;
die Dumper($data);

__END__

output:
$VAR1 = {
          '1' => {
                   'vardesc2' => 'desc2',
                   'varvalue2' => 'value2',
                   'varname2' => 'name2'
                 },
          '0' => {
                   'varname1' => 'name1',
                   'varvalue1' => 'value1',
                   'vardesc1' => 'desc1'
                 },
          '2' => {
                   'varnameN' => 'nameN',
                   'vardescN' => 'descN',
                   'varvalueN' => 'valueN'
                 }
        };
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