HTB22905: Path disclosure in Wordpress

[advisory () htbridge ch]

Vulnerability ID: HTB22905
Reference: http://www.htbridge.ch/advisory/path_disclosure_in_wordpress.html
Product: Wordpress
Vendor: http://wordpress.org/ ( http://wordpress.org/ ) 
Vulnerable Version: 3.1
Vendor Notification: 15 March 2011 
Vulnerability Type: Path disclosure
Status: Not Fixed
Risk level: Low 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the "/wp-includes/theme-compat/" & "/wp-content/themes/twentyten/" scripts, 
it's possible to generate an error that will reveal the full path of the script.
A remote user can determine the full path to the web root directory and other potentially sensitive information.

The following PoC is available:

[code]
/wp-includes/theme-compat/comments-popup.php    
/wp-includes/theme-compat/comments.php
/wp-includes/theme-compat/footer.php
/wp-includes/theme-compat/sidebar.php
/wp-content/themes/twentyten/index.php
/wp-content/themes/twentyten/404.php
/wp-content/themes/twentyten/archive.php
[/code]