Fortinet Fortigate RADIUS Protocol CVE-2024-3596 (FG-IR-24-255)

critical Nessus Plugin ID 232299

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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-24-255 advisory.

- RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject, or Access-Challenge) to any other response using a chosen- prefix collision attack against MD5 Response Authenticator signature. (CVE-2024-3596)

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 7.4.6 or later. For 7.6.x, upgrade to Fortigate version 7.6.1 or later.

Plugin Details

Severity: Critical

ID: 232299

File Name: fortigate_FG-IR-24-255.nasl

Version: 1.1

Type: local

Family: Firewalls

Published: 3/7/2025

Updated: 3/7/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

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-2024-3596

CVSS v3

Risk Factor: Critical

Base Score: 9

Temporal Score: 7.8

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 7.2

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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: 8/13/2024

Vulnerability Publication Date: 7/9/2024

Reference Information

CVE: CVE-2024-3596

Detections

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