Secunia Advisory: SA18767 Print Advisory
Release Date: 2006-02-10
Last Update: 2006-02-16

Critical:
Moderately critical
Impact: System access
Where: From remote
Solution Status: Vendor Patch

Software: FCKeditor 2.x

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CVE reference: CAN-2006-0658

Description:
rgod has discovered a vulnerability in FCKeditor, which potentially can be exploited by malicious people to compromise a vulnerable system.

The problem is that it is possible to upload arbitrary files to a location inside the web root if the file extension does not match the list of denied file extensions. This can e.g. be exploited to upload and execute a malicious PHP script with the ".php.txt" file extension.

Successful exploitation requires that file uploads have been enabled in the "config.php" configuration file (not enabled by default).

The vulnerability has been confirmed in version 2.2 and has also been reported in version 2.0. Other versions may also be affected.

Solution:
Disable file uploads in "config.php".

http://secunia.com/advisories/18767/

-->ExV2 did not use file upload from FCK Editor. So far there is no problem for ExV2.