SECUNIA ADVISORY ID: SA19892

VERIFY ADVISORY: http://secunia.com/advisories/19892/

CRITICAL: Highly critical

IMPACT: System access

WHERE: From remote

SOFTWARE: Knowledge Base Mod 2.x (module for phpBB) http://secunia.com/product/9638/

DESCRIPTION:
[Oo] has discovered a vulnerability Knowledge Base Mod for phpBB, which can be exploited by malicious people to compromise a vulnerable system.

Input passed to the "module_root_path" parameter in /includes/kb_constants.php isn't properly verified, before it is used to include files. This can be exploited to include arbitrary files from external and local resources.

Successful exploitation requires that "register_globals" is enabled.

The vulnerability has been confirmed in version 2.0.2. Other versions may also be affected.

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

PROVIDED AND/OR DISCOVERED BY: [Oo]

ORIGINAL ADVISORY: http://milw0rm.com/exploits/1728