Fortinet Fortigate DNS type 65 resource record requests bypass DNS filter (FG-IR-24-053)

medium Nessus Plugin ID 241531

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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-24-053 advisory.

- An Improperly Implemented Security Check for Standard vulnerability [CWE-358] in FortiOS version 7.6.0, version 7.4.7 and below, 7.0 all versions, 6.4 all versions and FortiProxy version 7.6.1 and below, version 7.4.8 and below, 7.2 all versions, 7.0 all versions may allow a remote unauthenticated user to bypass the DNS filter via Apple devices. (CVE-2024-55599)

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, see vendor advisory. For 7.2.x, upgrade to Fortigate version 7.2.11 or later. For 7.4.x, upgrade to Fortigate version 7.4.8 or later. For 7.6.x, upgrade to Fortigate version 7.6.1 or later.

Plugin Details

Severity: Medium

ID: 241531

File Name: fortigate_FG-IR-24-053.nasl

Version: 1.2

Type: local

Family: Firewalls

Published: 7/8/2025

Updated: 7/10/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.9

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2024-55599

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/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: Host/Fortigate/model, Host/Fortigate/version

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 7/8/2025

Reference Information

CVE: CVE-2024-55599

IAVA: 2025-A-0435

Detections

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