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Vulnerability of Avast Antivirus: executing DLL code via Protected Process Light

Synthesis of the vulnerability 

An attacker can create a malicious Protected Process Light DLL, and then put it in the current directory of Avast Antivirus, in order to execute code.
Impacted products: Avast AV, AVG AntiVirus.
Severity of this bulletin: 2/4.
Creation date: 24/10/2019.
Références of this threat: CVE-2019-17093, VIGILANCE-VUL-30705.

Description of the vulnerability 

An attacker can create a malicious Protected Process Light DLL, and then put it in the current directory of Avast Antivirus, in order to execute code.
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This cybersecurity bulletin impacts software or systems such as Avast AV, AVG AntiVirus.

Our Vigil@nce team determined that the severity of this cybersecurity weakness is medium.

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

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a specialist ability can exploit this computer vulnerability bulletin.

Solutions for this threat 

Avast Antivirus: version 19.8.
The version 19.8 is fixed:
  https://www.avast.com/fr-fr/free-antivirus-download
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Vigil@nce provides software vulnerability alerts. The Vigil@nce team tracks computer vulnerabilities impacting systems and applications.