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computer vulnerability announce CVE-2019-5589

Fortinet FortiClient: executing DLL code

Synthesis of the vulnerability

An attacker can create a malicious DLL, and then put it in the current directory of Fortinet FortiClient, in order to execute code.
Vulnerable software: FortiClient.
Severity of this announce: 2/4.
Consequences of an intrusion: administrator access/rights, privileged access/rights.
Attacker's origin: intranet server.
Creation date: 16/05/2019.
Références of this computer vulnerability: CERTFR-2019-AVI-227, CVE-2019-5589, FG-IR-19-060, VIGILANCE-VUL-29347.

Description of the vulnerability

The Fortinet FortiClient product uses external shared libraries (DLL).

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

An attacker can therefore create a malicious DLL, and then put it in the current directory of Fortinet FortiClient, in order to execute code.
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