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All the Perl that's Practical to Extract and Report

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  • Using values from web-form input in a qx{ sprintf "blah %s blah", $input } without taint checking the $input first is not safe, never was, never should have been considered safe. If someone ever said "it's only a way to crash the program, no way to break in here", they were not listening to history. Running system commands with user input is always going to be a target of opportunity, you have to defend that in depth. You've got to check for buffer overrun (even if you can't see the buffer ) and ;'s and
    # I had a sig when sigs were cool
    use Sig;