Unless I'm misreading, some of the more serious false negatives include: 

$dbh->do(qq{
    /* comment */ INSERT INTO foo VALUES('$bad_stuff')
});
$dbh->do(qq{
   INSERT INTO foo VALUES($bad_stuff)
});
$dbh->do( sprintf(
 "INSERT INTO foo VALUES(%s)", $bad_stuff
));

[download]
A better approach might be to find all the prepare() and do() statements and run them through a safe DBI subclass that does the prepare and evaluates what it prepared.

In reply to Re: Use PPI to Find SQL Injection Attacks by jZed
in thread Use PPI to Find SQL Injection Attacks by Ovid

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