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Fortinet FortiClient - Lack of client-side certificate validation in ZTNA service (FG-IR-22-282)

high Nessus Plugin ID 206885

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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-22-282 advisory.

 - AAn improper certificate validation vulnerability [CWE-295] in FortiClientWindows 7.2.0 through 7.2.2, 7.0.0 through 7.0.11, FortiClientLinux 7.2.0, 7.0.0 through 7.0.11 and FortiClientMac 7.0.0 through 7.0.11, 7.2.0 through 7.2.4 may allow a remote and unauthenticated attacker to perform a Man-in-the-Middle attack on the communication channel between the FortiGate and the FortiClient during the ZTNA tunnel creation (CVE-2024-31489)

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

Solution

Upgrade to FortiClient version 7.0.12 / 7.2.3 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-22-282

Plugin Details

Severity: High

ID: 206885

File Name: forticlient_FG-IR-22-282.nasl

Version: 1.3

Type: local

Agent: windows

Family: Windows

Published: 9/10/2024

Updated: 10/28/2024

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2024-31489

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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: 9/10/2024

Vulnerability Publication Date: 9/10/2024

Reference Information

CVE: CVE-2024-31489