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XSS vulnerability in In-Portal CMS
From: "MustLive" <mustlive () websecurity com ua>
Date: Sun, 31 Aug 2014 20:22:26 +0300

Hello list!

After I informed developers in August about multiple vulnerabilities in In-Portal CMS and they answered they would fix them soon (so wait for disclosure of the first vulnerabilities), I found new hole in this CMS at their official site.

This is Cross-Site Scripting vulnerability in In-Portal CMS. Besides tens millions of vulnerable web sites with affected flash files and vulnerable multiple plugins for different engines, there are a lot of other vulnerable plugins and themes - even five years since my original advisory. This time it's a theme for In-Portal CMS.

This XSS is similar to XSS vulnerability in WP-Cumulus, which I've disclosed in 2009 (http://securityvulns.com/Wdocument842.html). Because this theme uses tagcloud.swf made by author of WP-Cumulus. About such vulnerabilities I wrote in previous years, 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 (http://lists.webappsec.org/pipermail/websecurity_lists.webappsec.org/2010-January/006033.html).

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Affected products:
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Vulnerable are all versions of In-Portal CMS with this theme. There can be other vulnerable themes for this CMS.

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Details:
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Cross-Site Scripting (WASC-08):

http://site/themes/theme_name/inc/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

XSS at official site of In-Portal CMS:

http://www.in-portal.com/themes/theme_in-portal.com/inc/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 (http://websecurity.com.ua/5476/). Also it's possible to conduct (like in WP-Cumulus) HTML Injection attack.

I mentioned about this vulnerability at my site (http://websecurity.com.ua/7312/).

Best wishes & regards,
Eugene Dokukin aka MustLive
Administrator of Websecurity web site
http://websecurity.com.ua


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