A security issue and a vulnerability have been discovered in Falt4 CMS, which can be exploited by malicious people to bypass certain security restrictions and conduct cross-site request forgery attacks.

1) The security issue is caused due to incorrect security restrictions on the "modules/newsletter/FCKeditor/editor/filemanager/browser/default/connectors/php/connector.php" script. This can be exploited to upload malicious PHP scripts with the e.g. pht extension to the web server.

Successful exploitation of this security issue requires a certain server configuration (e.g. an Apache server with the "mod_mime" module installed).

2) The application allows users to perform certain actions via HTTP requests without performing any validity checks to verify the requests. This can be exploited to e.g. change the administrator's password by tricking the user into visiting a malicious web site.

Solution
Restrict access to the FCKeditor directory (e.g. using a .htaccess file).
Further details available to Secunia VIM customers

Provided and/or discovered by
1) Sp3shial
2) d14l and marcoj

Changelog
Further details available to Secunia VIM customers

Original Advisory
1) http://milw0rm.com/exploits/8060
2) http://packetstorm.linuxsecurity.com/0902-exploits/falt4-cms-xsrf.txt

Deep Links
Links available to Secunia VIM customers