Insecure DLL loading in Fortinet FortiClient for Windows and FortiClient VPN
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-9290 |
| CWE-ID | CWE-427 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Fortinet FortiClient for Windows Server applications / Other server solutions FortiClient VPN Server applications / Other server solutions |
| Vendor | Fortinet, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Insecure DLL loading
EUVDB-ID: #VU47346
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 - Uncontrolled Search Path Element
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFortinet FortiClient for Windows: 6.0.0 - 6.2.3
FortiClient VPN: 6.2.3
External linkshttp://fortiguard.com/psirt/FG-IR-19-060
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.
