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Vulnerability of Adobe Flash Player: use after free

Synthesis of the vulnerability

An attacker can force the usage of a freed memory area of Adobe Flash Player, in order to trigger a denial of service, and possibly to run code.
Severity of this computer vulnerability: 4/4.
Number of vulnerabilities in this bulletin: 2.
Creation date: 07/02/2018.
Revision date: 26/02/2018.
Références of this announce: APSB18-03, CERTFR-2018-AVI-071, CERTFR-2018-AVI-072, CVE-2018-4877, CVE-2018-4878, RHSA-2018:0285-01, VIGILANCE-VUL-25234, ZDI-18-178.

Description of the vulnerability

An attacker can force the usage of a freed memory area of Adobe Flash Player, in order to trigger a denial of service, and possibly to run code.
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This cybersecurity threat impacts software or systems such as Flash Player, Windows 10, Windows 2012, Windows 2016, Windows 8, Windows RT, RHEL.

Our Vigil@nce team determined that the severity of this computer threat note is critical.

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

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 security threat.

Solutions for this threat

Adobe Flash Player: version 28.0.0.161.
The version 28.0.0.161 is fixed:
  https://get.adobe.com/flashplayer/

RHEL: new flash-plugin packages.
New packages are available:
  RHEL 6: flash-plugin 28.0.0.161-1.el6_9

Windows: patch for Adobe Flash Player.
A patch is indicated in information sources.
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