Joomla! Community Builder Enhanced Component "tabname" Local File Inclusion Vulnerability

SECUNIA ADVISORY ID:
SA41741

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/41741/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=41741

RELEASE DATE:
2010-10-17
DESCRIPTION:
A vulnerability has been reported in Community Builder Enhanced
component for Joomla!, which can be exploited by malicious users to
disclose sensitive information and to potentially compromise a
vulnerable system.

Input passed via the "tabname" parameter to index.php (when "option"
is set to "com_cbe", "task" is set to "userProfile", "user" is set,
and "ajaxdirekt" is set to "true") is not properly verified before
being used to include files. This can be exploited to include
arbitrary files from local resources via directory traversal
sequences and URL-encoded NULL bytes.

NOTE: This can further be exploited to execute arbitrary PHP code by
e.g. uploading and including specially crafted image files.

The vulnerability is reported in version 1.4.8, 1.4.9, and 1.4.10.
Prior versions may also be affected.

SOLUTION:
Update to version 1.4.11.

PROVIDED AND/OR DISCOVERED BY:
Delf Tonder

ORIGINAL ADVISORY:
Joomla CBE:
http://www.joomla-cbe.de/CBE-News/cbe-1411-behebt-kritischen-sicherheitsfehler.html