drupal -- cross site scripting (utf8)

2008-01-10T00:00:00
ID 6F736456-C060-11DC-982E-001372FD0AF2
Type freebsd
Reporter FreeBSD
Modified 2010-05-12T00:00:00

Description

The Drupal Project reports:

When outputting plaintext Drupal strips potentially dangerous HTML tags and attributes from HTML, and escapes characters which have a special meaning in HTML. This output filtering secures the site against cross site scripting attacks via user input. Certain byte sequences that are invalid in the UTF8 specification are not handled properly by Internet Explorer 6 and may lead it to see a multibyte start character where none is present. Internet Explorer 6 then consumes a number of subsequent UTF-8 characters. This may lead to unsafe attributes that were outside a tag for the filter to appear inside a tag for Internet Explorer 6. This behaviour can then be used to insert and execute javascript in the context of the website.