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Vulnerability of Apache Log4j: security improvement via SerializedLayout/JsonLayout

Synthesis of the vulnerability 

The security of Apache Log4j was improved via SerializedLayout/JsonLayout.
Impacted software: log4j.
Severity of this computer vulnerability: 1/4.
Creation date: 22/09/2017.
Références of this announce: VIGILANCE-VUL-23902.

Description of the vulnerability 

This bulletin is about a security improvement.

It does not describe a vulnerability.

The security of Apache Log4j was therefore improved via SerializedLayout/JsonLayout.
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This threat announce impacts software or systems such as log4j.

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

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

An attacker with a expert ability can exploit this security alert.

Solutions for this threat 

Apache Log4j: version 2.9.1.
The version 2.9.1 is fixed:

Apache JMeter: version 4.0.
The version 4.0 is fixed:
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