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Vulnerability of F-Secure Anti-Virus: executing DLL code via the installer

Synthesis of the vulnerability 

An attacker can create a malicious install DLL, and then put it in the current directory of F-Secure Anti-Virus, in order to execute code.
Vulnerable products: F-Secure AV.
Severity of this weakness: 2/4.
Creation date: 16/05/2019.
Références of this bulletin: CVE-2019-11644, FSC-2019-2, VIGILANCE-VUL-29346.

Description of the vulnerability 

The F-Secure Anti-Virus product uses external shared libraries (DLL).

However, if the working directory contains a malicious install DLL, it is automatically loaded.

An attacker can therefore create a malicious install DLL, and then put it in the current directory of F-Secure Anti-Virus, in order to execute code.
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This threat alert impacts software or systems such as F-Secure AV.

Our Vigil@nce team determined that the severity of this computer vulnerability bulletin is medium.

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

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

Solutions for this threat 

F-Secure Anti-Virus: version 2019-05-06.
The version the date of which is 2019-05-06 is fixed.
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