SB20230411102 - Multiple vulnerabilities in Fortinet FortiClient for Windows

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Incorrect authorization (CVE-ID: CVE-2022-40682)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect authorization. A local user can impersonate FortiClient process and create arbitrary files on the system.

2) Incorrect permission assignment for critical resource (CVE-ID: CVE-2022-43946)

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to incorrect permission assignment to a windows pipe in FortiClient Logging daemon. A remote attacker on the same file sharing network can write arbitrary data to a windows pipe and execute arbitrary code on the system.

3) External Control of File Name or Path (CVE-ID: CVE-2022-42470)

The vulnerability allows a local user to create arbitrary files on the system.

The vulnerability exists due to application allows an attacker to control path of the files to create. A local user can create arbitrary files on the system with elevated privileges.

Remediation

Install update from vendor's website.

References

• https://fortiguard.com/psirt/FG-IR-22-336
• https://fortiguard.com/psirt/FG-IR-22-429
• https://www.zerodayinitiative.com/advisories/ZDI-23-1104/
• https://fortiguard.com/psirt/FG-IR-22-320