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Fortinet Fortigate SSL-VPN user IP spoofing (FG-IR-23-225)

medium Nessus Plugin ID 197623

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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-23-225 advisory.

 - An insufficient verification of data authenticity vulnerability [CWE-345] in Fortinet FortiOS SSL-VPN tunnel mode version 7.4.0 through 7.4.1, version 7.2.0 through 7.2.7 and before 7.0.12 & FortiProxy SSL- VPN tunnel mode version 7.4.0 through 7.4.1, version 7.2.0 through 7.2.7 and before 7.0.13 allows an authenticated VPN user to send (but not receive) packets spoofing the IP of another user via crafted network packets. (CVE-2023-45586)

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 Fortigate version 6.2.999999 / 6.4.999999 / 7.0.13 / 7.2.8 / 7.4.2 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-23-225

Plugin Details

Severity: Medium

ID: 197623

File Name: fortigate_FG-IR-23-225.nasl

Version: 1.3

Type: local

Family: Firewalls

Published: 5/22/2024

Updated: 11/15/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2023-45586

CVSS v3

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/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: Host/Fortigate/model, Host/Fortigate/version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/14/2024

Vulnerability Publication Date: 3/14/2024

Reference Information

CVE: CVE-2023-45586

IAVA: 2024-A-0165-S