Privilege escalation in Forcepoint VPN Client for Windows

1) Unquoted Search Path or Element

EUVDB-ID: #VU21348

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-6145

CWE-ID: CWE-428 - Unquoted Search Path or Element

Exploit availability: No

Description

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

The vulnerability exists due to software tries to execute programs in the following locations, when the VPN client is started:

• "C:\Program.exe"
• "C:\Program Files (x86)\Forcepoint\VPN.exe"

A local user with ability to place malicious binaries into these directories can execute arbitrary code on the system with SYSTEM privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Forcepoint VPN Client for Windows: 6.6.0

CPE2.3

• cpe:2.3:a:forcepoint:forcepoint_vpn_client_for_windows:6.6.0:*:*:*:*:*:*:*

External links

https://safebreach.com/Post/Forcepoint-VPN-Client-for-Windows-Unquoted-Search-Path-and-Potential-Abuses-CVE-2019-6145
https://support.forcepoint.com/KBArticle?id=000017525

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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