Online Installer DLL Hijacking

Summary

An untrusted search path vulnerability [CWE-426] in FortiClient Windows may allow an attacker to run arbitrary code via DLL hijacking and social engineering.

Version Affected Solution
FortiClientWindows 7.4 7.4.0 Upgrade to 7.4.1 or above
FortiClientWindows 7.2 7.2.0 through 7.2.4 Upgrade to 7.2.5 or above
FortiClientWindows 7.0 7.0.0 through 7.0.12 Upgrade to 7.0.13 or above

Workaround
Ensure that all download executables are downloaded directly from Fortinet.

Acknowledgement

Fortinet is pleased to thank Aleksandar Marceta-Pavlovic from WKO Inhouse GmbH of the Austrian Economic Chambers for reporting this vulnerability under responsible disclosure.

Timeline

2024-11-12: Initial publication
2024-11-12: Adding workaround
2024-11-13: Fixed typos