Arbitrary file creation by unprivileged users

Summary

A relative path traversal [CWE-23] vulnerability in FortiClientWindows may allow a local low privileged attacker to perform arbitrary file creation on the device filesystem.

Version Affected Solution
FortiClientWindows 7.2 Not affected Not Applicable
FortiClientWindows 7.0 7.0.0 through 7.0.7 Upgrade to 7.0.8 or above
FortiClientWindows 6.4 6.4 all versions Migrate to a fixed release
FortiClientWindows 6.2 6.2 all versions Migrate to a fixed release
FortiClientWindows 6.0 6.0 all versions Migrate to a fixed release

Acknowledgement

Fortinet is pleased to thank Daniel Hulliger from Armasuisse CYD Campus for reporting this vulnerability under responsible disclosure.

Timeline

2023-04-11: Initial publication