Bug 19052 - XSS Flaws in - Invoice search page

Bug 19052 - XSS Flaws in - Invoice search page

1. Hit /cgi-bin/koha/acqui/invoices.pl
2. Enter <IFRAME SRC="javascript:alert('XSS');"></IFRAME> Invoiceno,
   ISBN/EAN/ISSN, Title, Author, Publihser, Publication year search box.
3. Notice the iframe is executed.
4. Apply patch.
5. Reload page, and enter iframe again on Invoiceno,
   ISBN/EAN/ISSN, Title, Author, Publihser, Publication year search box.
6. Notice it is no longer executed.

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>