Fantastic Guestbook v2.0.1 Advisory

2006-07-24T00:00:00
ID SECURITYVULNS:DOC:13553
Type securityvulns
Reporter Securityvulns
Modified 2006-07-24T00:00:00

Description

.:. Fantastic Guestbook v2.0.1 Advisory .:.

Date of written Advisory:

July, 11 2006

Product:

Fantastic Guestbook v2.0.1

Vendor:

http://fscripts.com/

Description:

Fantastic GuestBook version 2.0.1 is simple GuestBook; where remote user without authentication can post their own message. No authentication is required! Every body can post message.

Exploit(s) / Vulnerability(ies):

Fantastic GuestBook version 2.0.1 is affected by a Remote XSS Vulnerability. Some variables are not properly sanitized before being used. Here you will find the variables not properly sanitized:

[...] 'first_name'=>$_POST['first_name'],

'last_name'=>$_POST['last_name'], 'nickname'=>$_POST['nickname'],

[...]

PoC(s):

If a malicious people go into the sign in form and put in the fields First Name, Last Name and Nick Name a code like this:

<script>alert("XSS")</script>

When you load the page http://127.0.0.1/[path]/guestbook.php or you read the messages of the guestbook you will se a pop-up that "say" 'XSS'.

Vendor Status:

July, 2006/11 - Not Informed!

Solution:

At the moment (July, 2006/11) there are no solutions from the vendor. If you want to make sure the code and your GuestBook you have to sanitize the variables: firs_name last_name nick_name

Credits:

omnipresent omnipresent[at]email[dot]it http://it.security.netsons.org