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MyBB Xbox Live ID Cross Site Scripting

MyBB Xbox Live ID Cross Site Scripting
Posted Dec 18, 2012
Authored by limb0

MyBB Xbox Live ID plugin suffers from a stored cross site scripting vulnerability.

tags | exploit, xss
MD5 | a8e060f9bf6d313030f213c3328d3004

MyBB Xbox Live ID Cross Site Scripting

Change Mirror Download
# Exploit Title: Xbox Live ID MyBB Plugin Stored XSS
# Date: 13/12/2012
# Exploit Author: limb0
# Vendor Homepage: http://www.leveleando.com
# Software Link: http://mods.mybb.com/view/profile-xbox-live-id
# Version: 1.0
# Category:Web Security
# Tested on: Linux

+------------------------------------------------------------+
Stored XSS-Instructions
1.Install&Activate plugin
(Maybe you will get an error: About a "/" on line 31.
Open your plugin file and delete the slash.The coder didn't notice that)
2.Go to UserCP >> Edit Profile >> Xbox Live ID
3.Inject your string(xss) ex. "><script>alert(1)</script>
4.Visit your profile and voila

Proof
Inject:http://postimage.org/image/hpxk33od3/
Result:postimage.org/image/6vzb5sqgd/
+-------------------------------------------------------------+

Vulnerable code:
function profilexli_update($xli)
{
global $mybb;

if (isset($mybb->input['xli']))
{
$xli->user_update_data['xli'] = $mybb->input['xli'];
}
}



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