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tagcloud for Kasseler CMS Vulnerability
Vulnerability in tagcloud for Kasseler CMS
Vulnerability in tagcloud for Kasseler CMS

Hello Bugtraq!

I want to warn you about security vulnerability in plugin tagcloud for
Kasseler CMS

Advisory: Vulnerability in tagcloud for Kasseler CMS
URL: http://websecurity.com.ua/4191/ 
Affected product: all versions of tagcloud for Kasseler CMS.

07.01.2010 - found vulnerability (during researches of vulnerabilities at
02.05.2010 - found that vulnerable site was using CMS (when visited it).
12.05.2010 - disclosed at my site.
13.05.2010 - informed developers.

This is Cross-Site Scripting vulnerability.

This XSS is similar to XSS vulnerability in WP-Cumulus and other web
applications which I already reported to security mailing lists, because
it's using tagcloud.swf made by author of WP-Cumulus. 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



Code will execute after click. It's strictly social XSS.

Also it's possible to conduct (like in WP-Cumulus) HTML Injection attack,
including in those flash files which have protection (in flash files or via
WAF) against javascript and vbscript URI in parameter tagcloud.

HTML Injection:


Best wishes & regards,
Administrator of Websecurity web site

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