[Full-disclosure] Open Xchange XSS

Open Xchange webmail (<=0.8.1-6) suffers from xss.
http://mirror.open-xchange.org/ox/EN/community/

Vendor response:
For the commercial OX you don't need this as there exists additional security
options where you will not able to use this session. It's a general problem for
all web based mailers and some of them try to filter such scripts, some of them
do not and show a warning instead that the document may contains "dangerous
content". But you will never be able to filter all possible scriptings.
Displaying HTML content is ALWAYS an unsecure option, so it is recommended to
disable "Inline HTML" at the WebMail options. Anyway, I will check if I can make
some basic filter to get most of such tags.

Cheers,
Thomas