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Fortinet FortiClient IPsec improper validation of certificate with host mismatch (FG-IR-24-365)

medium Nessus Plugin ID 238103

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Synopsis

remote Windows host is missing one or more security-related updates.

Description

The version of FortiClient installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-24-365 advisory.

 - A improper validation of certificate with host mismatch in Fortinet FortiClientWindows version 7.4.0, versions 7.2.0 through 7.2.6, and 7.0 all versions allow an unauthorized attacker to redirect VPN connections via DNS spoofing or another form of redirection. (CVE-2024-54019)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

For 7.0.x, see vendor advisory. For 7.2.x, upgrade to FortiClient version 7.2.7 or later. For 7.4.x, upgrade to FortiClient version 7.4.1 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-24-365

Plugin Details

Severity: Medium

ID: 238103

File Name: forticlient_FG-IR-24-365.nasl

Version: 1.1

Type: local

Agent: windows

Family: Windows

Published: 6/10/2025

Updated: 6/10/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2024-54019

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:fortinet:forticlient

Required KB Items: installed_sw/FortiClient

Exploit Ease: No known exploits are available

Patch Publication Date: 6/10/2025

Vulnerability Publication Date: 6/10/2025

Reference Information

CVE: CVE-2024-54019