Vulnerability identifier: #VU47346

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-9290

CWE-ID: CWE-427

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Fortinet FortiClient for Windows
Server applications / Other server solutions
FortiClient VPN
Server applications / Other server solutions

Vendor: Fortinet, Inc

Description

The vulnerability allows a local attacker to compromise vulnerable system.

The vulnerability exists due to the application loads DLL libraries in an insecure manner. A local attacker with control over the directory in which FortiClientOnlineInstaller.exe and FortiClientVPNOnlineInstaller.exe resides can execute arbitrary code on the system via uploading malicious Filter Library DLL files in that directory.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiClient for Windows: 6.2.0 - 6.2.3, 6.0.0 - 6.0.8

FortiClient VPN: 6.2.3

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External links
http://fortiguard.com/psirt/FG-IR-19-060

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.