Joomla! PicSell Component "dflink" File Disclosure Vulnerability

SECUNIA ADVISORY ID:
SA41187

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/41187/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=41187

RELEASE DATE:
2010-09-01
DESCRIPTION:
A vulnerability has been reported in the PicSell component for
Joomla!, which can be exploited by malicious people to disclose
sensitive information.

Input passed via the "dflink" parameter to index.php (when "option"
is set to "com_picsell", "controller" is set to "prevsell", and
"task" is set to "dwnfree") is not properly verified before being
used to read files. This can be exploited to download arbitrary files
from local resources via directory traversal sequences.

The vulnerability is reported in version 1.0. Other versions may also
be affected.

SOLUTION:
Edit the source code to ensure that input is properly verified.

PROVIDED AND/OR DISCOVERED BY:
Craw