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Vulnerability of Joomla Kunena Forum: Cross Site Scripting

Synthesis of the vulnerability 

An attacker can trigger Cross Site Scripting of Joomla Kunena Forum, in order to execute JavaScript code in the context of the web site.
Vulnerable systems: Joomla Extensions ~ not comprehensive.
Severity of this threat: 2/4.
Creation date: 30/07/2014.
Références of this weakness: CVE-2014-9103, VIGILANCE-VUL-15110.

Description of the vulnerability 

The Kunena Forum extension can be installed on Joomla.

However, it does not filter received data before inserting them in generated HTML documents.

An attacker can therefore trigger a Cross Site Scripting of Joomla Kunena Forum, in order to execute JavaScript code in the context of the web site.
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This security alert impacts software or systems such as Joomla Extensions ~ not comprehensive.

Our Vigil@nce team determined that the severity of this security weakness is medium.

The trust level is of type confirmed by the editor, with an origin of document.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this security announce.

Solutions for this threat 

Joomla Kunena Forum: version 3.0.6.
The version 3.0.6 is fixed:
  http://www.kunena.org/download
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