Advanced Guestbook 2.2/2.3 - User-Agent HTML Injection

Author: Carbonize
type: remote
platform: windows
port: 
date_added: 2005-01-22 
date_updated: 2013-06-09 
verified: 1 
codes: OSVDB-18515 
tags: 
aliases:  
screenshot_url:  
application_url: 

source: https://www.securityfocus.com/bid/14391/info

Advanced Guestbook is prone to an HTML injection vulnerability. This issue is due to a failure in the application to properly sanitize user-supplied input before using it in dynamically generated content.

Attacker-supplied HTML and script code would be executed in the context of the affected Web site, potentially allowing for theft of cookie-based authentication credentials. An attacker could also exploit this issue to control how the site is rendered to the user; other attacks are also possible.

Set the following registry setting to exploit this vulnerability:
[HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Windows/CurrentVersion/Internet Settings/5.0/User Agent/] (Default)= "Code to inject"