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Vulnerability of Apache Struts: two vulnerabilities

Synthesis of the vulnerability 

An attacker can use several vulnerabilities of Apache Struts.
Vulnerable products: Struts, Black Diamond, Summit.
Severity of this weakness: 3/4.
Number of vulnerabilities in this bulletin: 2.
Creation date: 21/04/2016.
Références of this bulletin: CVE-2016-3081, CVE-2016-3082, S2-031, S2-032, VIGILANCE-VUL-19434, VN-2016-005.

Description of the vulnerability 

Several vulnerabilities were announced in Apache Struts.

An attacker can upload a malicious file, in order for example to upload a Trojan. [severity:3/4; CVE-2016-3082, S2-031]

An attacker can use a vulnerability in Dynamic Method Invocation, in order to run code. [severity:3/4; CVE-2016-3081, S2-032]
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This security threat impacts software or systems such as Struts, Black Diamond, Summit.

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

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

This bulletin is about 2 vulnerabilities.

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 computer threat alert.

Solutions for this threat 

Apache Struts: version 2.3.28.1.
The version 2.3.28.1 is fixed:
  http://struts.apache.org/download.cgi#struts23281

Apache Struts: version 2.3.24.3.
The version 2.3.24.3 is fixed:
  http://struts.apache.org/download.cgi#struts23243

Apache Struts: version 2.3.20.3.
The version 2.3.20.3 is fixed:
  http://struts.apache.org/download.cgi#struts23203
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