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Fortinet Fortigate Firewall session injection in FGSP (FG-IR-24-287)

low Nessus Plugin ID 238105

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Synopsis

Fortinet Firewall is missing one or more security-related updates.

Description

The version of Fortigate installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the FG-IR-24-287 advisory.

 - An improper restriction of communication channel to intended endpoints vulnerability [CWE-923] in FortiOS 7.6.0, 7.4.0 through 7.4.5, 7.2 all versions, 7.0 all versions, 6.4 all versions may allow an unauthenticated attacker to inject unauthorized sessions via crafted FGSP session synchronization packets.
 (CVE-2025-22251)

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

Solution

For 6.4.x / 7.0.x / 7.2.x, see vendor advisory. For 7.4.x, upgrade to Fortigate version 7.4.6 or later. For 7.6.x, upgrade to Fortigate version 7.6.1 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-24-287

Plugin Details

Severity: Low

ID: 238105

File Name: fortigate_FG-IR-24-287.nasl

Version: 1.1

Type: local

Family: Firewalls

Published: 6/10/2025

Updated: 6/10/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.9

CVSS v2

Risk Factor: Low

Base Score: 1.8

Temporal Score: 1.3

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

CVSS Score Source: CVE-2025-22251

CVSS v3

Risk Factor: Low

Base Score: 3.1

Temporal Score: 2.7

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

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

Vulnerability Information

CPE: cpe:/o:fortinet:fortios

Required KB Items: Settings/ParanoidReport, Host/Fortigate/model, Host/Fortigate/version

Exploit Ease: No known exploits are available

Patch Publication Date: 6/10/2025

Vulnerability Publication Date: 6/10/2025

Reference Information

CVE: CVE-2025-22251