Insecure DLL loading in Fortinet FortiClient for Windows - CVE-2019-5589
Published: May 16, 2019
Vulnerability identifier: #VU18513
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-5589
CWE-ID: CWE-427
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to the application loads DLL libraries in an insecure manner during installation, when FortiClientOnlineInstaller.exe is executed. A remote attacker can place a specially crafted .dll file on a remote SMB fileshare, trick the victim into executing the FortiClientOnlineInstaller.exe file from the share and execute arbitrary code on victim's system.
Affected software
Fortinet FortiClient for Windows
How to mitigate CVE-2019-5589
Install updates from vendor's website.
Fortinet FortiClient for Windows - update to 6.0.6