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Vulnerability of Symfony: Cross Site Scripting via VarExporter

Synthesis of the vulnerability 

An attacker can trigger a Cross Site Scripting via VarExporter of Symfony, in order to run JavaScript code in the context of the web site.
Impacted products: Symfony.
Severity of this bulletin: 2/4.
Creation date: 13/11/2019.
Références of this threat: CVE-2019-11325, VIGILANCE-VUL-30861.

Description of the vulnerability 

An attacker can trigger a Cross Site Scripting via VarExporter of Symfony, in order to run JavaScript code in the context of the web site.
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This vulnerability note impacts software or systems such as Symfony.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability is medium.

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

An attacker with a expert ability can exploit this computer threat note.

Solutions for this threat 

Symfony: version 4.3.8.
The version 4.3.8 is fixed:
  https://symfony.com/download

Symfony: version 4.2.12.
The version 4.2.12 is fixed:
  https://symfony.com/download
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

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