Bug 19051 - XSS Flaws in Batch item deletion page

Bug 19051 - XSS Flaws in Batch item deletion page

1. Hit /cgi-bin/koha/tools/batchMod.pl?del=1
2. Enter <IFRAME SRC="javascript:alert('XSS');"></IFRAME> in the Barcode list (one barcode per line) text area.
3. Notice the iframe is executed.
4. Apply patch.
5. Reload page, and enter iframe again on Barcode list (one barcode per line) text area.
6. Notice it is no longer executed.
7. Fixes for both barcode and itemnumber.

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>