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Vulnerability of Joomla Youtube Gallery: Cross Site Scripting

Synthesis of the vulnerability 

An attacker can trigger a Cross Site Scripting of Joomla Youtube Gallery, in order to execute JavaScript code in the context of the web site.
Impacted systems: Joomla Extensions ~ not comprehensive.
Severity of this alert: 2/4.
Creation date: 17/03/2014.
Références of this alert: CVE-2013-5956, VIGILANCE-VUL-14435.

Description of the vulnerability 

The Youtube Gallery 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 Youtube Gallery, in order to execute JavaScript code in the context of the web site.
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This computer weakness alert impacts software or systems such as Joomla Extensions ~ not comprehensive.

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

The trust level is of type confirmed by a trusted third party, 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 weakness bulletin.

Solutions for this threat 

Joomla Youtube Gallery: workaround.
A workaround is to disable Joomla Youtube Gallery.
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