Some vulnerabilities have been discovered in Newswriter, which can be exploited by malicious people to compromise a vulnerable system.

Input passed to the "NWCONF_SYSTEM[server_path]" parameter in include/editfunc.inc.php, include/main.inc.php, admin/include/menu.inc.php, and update/include/main.inc.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from local or external resources.

Successful exploitation requires that "register_globals" is enabled.

The vulnerabilities have been confirmed in version 1.4.2. Other versions may also be affected.

Solution
The vendor describes how to fix two of the vulnerabilities by applying code changes. Edit the source code to ensure that none of the affected files can be accessed directly.
Further details available to Secunia VIM customers

Provided and/or discovered by
Silahsiz Kuvvetler, XORON, and an anonymous person.

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://milw0rm.com/exploits/2439
http://milw0rm.com/exploits/2443

Deep Links
Links available to Secunia VIM customers