There's an ongoing battle to further secure the HTML filter against
malicious HTML mail and the browsers that accept almost any malformed piece of HTML.
This release contains fixes for the following:
- HTML attachments containing "data:" URLs;
- Internet Explorer in various versions accepts many permutations of HTML
HTML to us-ascii before applying further filters. IE only.
- Request forgery through images. It was possible to include "images" in
HTML mails which were in fact GET requests for the compose.php page sending
mail. These images are now properly detected, and the compose form will only
send mail through a POST request.
Register_globals does not have to be on for this issue.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.