My Little Forum versions 2.0 beta 23 and 1.75 suffer from a cross site scripting vulnerability.
1c2671a26476a8ffc3df09241abba8b69d1946608511d9c9a293d2eba28428b5
my little forum Cross-site scripting
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Product: my little forum
Version: 2.0 (beta 23), 1.75
Vendor: http://mylittleforum.net/
Date: 02/11/08
- Introduction
"my little forum is a simple PHP and MySQL based web-forum that displays
the messages in classical threaded view."
- Details
my little forum contains a flaw that allows a remote persistent cross site
scripting attack. The application does not validate [img] BBCode tags when
a user submits a forum post. This could be used to post javascript code
to the forum. IE6 and below will execute scripts stored in the src attribute
of an image element. IE7 and FireFox are not vulnerable.
- Proof of Concept
[img]javascript:alert(document.cookie)[/img]
which is converted to
<img src="javascript:alert(document.cookie)" alt="[image]" />
- Solution
Author was notified of security issue (2/4). Upgrade to 2.0 beta 24 or
disable the ability to use the [img] BBCode tag in your forum.
Author: dB
Email: dB [at] rawsecurity.org