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Vulnerability of Jasig CAS Server: Cross Site Scripting

Synthesis of the vulnerability 

An attacker can trigger a Cross Site Scripting of Jasig CAS Server, in order to run JavaScript code in the context of the web site.
Impacted software: CAS Server.
Severity of this computer vulnerability: 2/4.
Creation date: 21/09/2015.
Références of this announce: VIGILANCE-VUL-17944.

Description of the vulnerability 

The Jasig CAS Server product offers a web service.

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

An attacker can therefore trigger a Cross Site Scripting of Jasig CAS Server, in order to run JavaScript code in the context of the web site.
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This security bulletin impacts software or systems such as CAS Server.

Our Vigil@nce team determined that the severity of this cybersecurity announce 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 vulnerability alert.

Solutions for this threat 

Jasig CAS Server: version 4.0.2.
The version 4.0.2 is fixed:
  https://github.com/Jasig/cas/releases/tag/v4.0.2
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