Perhaps something like the following would work: 
sub _read_config {
    my $tainted_fh = FileHandle->new("Config_filename", "r");
    if ($tainted_fh -~ /^(.+)$/) { my $fh = $1 }
    eval <$fh>;
    die "Config_filename improperly formatted:\n$@" if ($@);
    $fh->close();
}

[download]
NOTE: leaving the "/^(.+)$/" like that is BAD, BAD, BAD. Make it more specific.

In reply to Re: eval $fh while setuid... by melguin
in thread eval $fh while setuid... by PsychoSpunk

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