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Fw: Vulnerability in widget Flash Tag Cloud for Blogsa and other ASP.NET engines
From: "MustLive" <mustlive () websecurity com ua>
Date: Tue, 18 Jan 2011 17:01:47 +0200

Hello list!

I want to warn you about Cross-Site Scripting vulnerability in b-cumulus. 
It's widget for Blogger, which is also using at separate sites.

SecurityVulns ID: 11353.

Affected products:

Vulnerable are all versions of b-cumulus.


This XSS is similar to XSS vulnerability in WP-Cumulus, because it's using
modified version of tagcloud.swf made by author of WP-Cumulus. About such
vulnerabilities I wrote in 2009-2010, particularly about millions of flash
files tagcloud.swf which are vulnerable to XSS attacks I mentioned in my
article XSS vulnerabilities in 34 millions flash files

XSS (WASC-08):

It can be used the file tagcloud.swf or tagcloud-ru.swf.



Code will execute after click. It's strictly social XSS. Also it's possible
to conduct (like in WP-Cumulus) HTML Injection attack.


2011.01.17 - disclosed at my site.
2011.01.18 - informed developers.

I mentioned about this vulnerability at my site

Best wishes & regards,
Administrator of Websecurity web site

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