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Vulnerability of TYPO3 Core: Cross Site Scripting via Site Name

Synthesis of the vulnerability

An attacker can trigger a Cross Site Scripting via Site Name of TYPO3 Core, in order to run JavaScript code in the context of the web site.
Severity of this alert: 1/4.
Creation date: 09/04/2018.
Références of this alert: 84191, CVE-2018-6905, VIGILANCE-VUL-25799.

Description of the vulnerability

The Core extension can be installed on TYPO3.

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

An attacker can therefore trigger a Cross Site Scripting via Site Name of TYPO3 Core, in order to run JavaScript code in the context of the web site.
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This computer weakness announce impacts software or systems such as TYPO3 Core.

Our Vigil@nce team determined that the severity of this security alert is low.

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

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 vulnerability.

Solutions for this threat

TYPO3 Core: version 8.7.11.
The version 8.7.11 is fixed:
  https://www.typo3.org/
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