Joomla! Cross-Site Request Forgery and Script Insertion Vulnerabilities

SECUNIA ADVISORY ID:
SA28219

VERIFY ADVISORY:
http://secunia.com/advisories/28219/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Joomla! 1.x
http://secunia.com/product/5788/

DESCRIPTION:
Some vulnerabilities have been reported in Joomla!, which can be
exploited by malicious users to conduct script insertion attacks and
by malicious people to conduct cross-site request forgery attacks.

1) Some vulnerabilities are caused due to various components and
modules for Joomla! allowing users to perform certain actions via
HTTP requests, without performing any validity checks to verify the
request. This can be exploited to e.g. add new super administrators.

2) Input passed via the poll options and the poll title in the
com_poll component is not properly sanitised before being used. This
can be exploited to insert arbitrary HTML and script code, which will
be executed in a user's browser session in context of an affected site
when viewing a page containing a malicious poll.

Successful exploitation requires privileges to edit polls.

SOLUTION:
Restrict access to trusted users only and edit the source code to
ensure that input is properly sanitised. Do not browser other
websites while being logged in into Joomla!.

Some of the vulnerabilities are fixed in Joomla! 1.5 RC4.

PROVIDED AND/OR DISCOVERED BY:
1) Armando Romeo aka Zinho and Jose Carlos Nieto
2) Armando Romeo aka Zinho

ORIGINAL ADVISORY:
1) http://www.hackerscenter.com/archive/view.asp?id=28138
2) http://joomlacode.org/gf/project/joomla/tracker/?action=TrackerItemEdit&tracker_item_id=7358