#VU22810 Permissions, Privileges, and Access Controls in Fortinet FortiClient for Windows - CVE-2019-16155

Vulnerability identifier: #VU22810

Vulnerability risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-16155

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Fortinet FortiClient for Windows
Server applications / Other server solutions

Vendor: Fortinet, Inc

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to improper permission checks. A remote authenticated attacker can escalate privileges on the system with running FortiClient for Linux through IPC socket by backup file.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Fortinet FortiClient for Windows: 0, 1.0.0 - 1.0.5, 1.2.0 - 1.2.5, 4.0.0 - 4.0.2, 4.1.0, 4.2.0, 4.3.0 - 4.3.3.445, 5.0.1 - 5.0.11, 5.2.0 - 5.2.028, 5.4.0 - 5.4.5, 5.6.0 - 5.6.6, 6.0.0 - 6.0.8, 6.2.0 - 6.2.1

---

External links
https://fortiguard.com/psirt/FG-IR-19-238

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.