The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Avast Antivirus: Cross Site Scripting via Network Notification Popup

Synthesis of the vulnerability 

An attacker can trigger a Cross Site Scripting via Network Notification Popup of Avast Antivirus, in order to run JavaScript code in the context of the web site.
Vulnerable systems: Avast AV, AVG AntiVirus.
Severity of this threat: 3/4.
Number of vulnerabilities in this bulletin: 2.
Creation date: 04/11/2019.
Références of this weakness: CVE-2019-18653, CVE-2019-18654, VIGILANCE-VUL-30776.

Description of the vulnerability 

An attacker can trigger a Cross Site Scripting via Network Notification Popup of Avast Antivirus, in order to run JavaScript code in the context of the web site.
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This cybersecurity vulnerability impacts software or systems such as Avast AV, AVG AntiVirus.

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

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

This bulletin is about 2 vulnerabilities.

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

Solutions for this threat 

Avast Antivirus: version 19.4.
The version 19.4 is fixed:
  https://www.avast.com/fr-fr/index#pc
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