HTB22888: File Content Disclosure in LotusCMS

[advisory () htbridge ch]

Vulnerability ID: HTB22888
Reference: http://www.htbridge.ch/advisory/file_content_disclosure_in_lotuscms.html
Product: LotusCMS
Vendor: Arboroia Network ( http://www.lotuscms.org/ ) 
Vulnerable Version: 3.0.3 and probably prior versions
Vendor Notification: 01 March 2011 
Vulnerability Type: File Content Disclosure
Risk level: High 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

Vulnerability Details:
An attacker can disclose arbitrary local file content.

The vulnerability exists due to failure in the "core/model/PageModel.php" script to properly sanitize user-supplied 
input in "page" variable. An attacker can compromise the application, get configuration and password files content. 
Access to this information could lead attacker in launching further attacks against the target system.

Attacker can use browser to exploit this vulnerability. The following PoC is available:
http://host/index.php?page=./../../../../../etc/passwd%00