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Fortinet Fortigate XSS vulnerability in SSL VPN web UI (FG-IR-23-485)

medium Nessus Plugin ID 202060

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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-23-485 advisory.

 - The vulnerability exists due to insufficient sanitization of user-supplied data in SSL VPN web UI. A remote attacker can trick the victim into bookmarking a malicious samba server, then opening the bookmark and execute arbitrary HTML and script code in user's browser in context of vulnerable website. Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks. (CVE-2024-26006)

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, see vendor advisory. For 7.0.x, upgrade to Fortigate version 7.0.14 or later. For 7.2.x, upgrade to Fortigate version 7.2.8 or later. For 7.4.x, upgrade to Fortigate version 7.4.4 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-23-485

Plugin Details

Severity: Medium

ID: 202060

File Name: fortigate_FG-IR-23-485.nasl

Version: 1.9

Type: local

Family: Firewalls

Published: 7/10/2024

Updated: 7/29/2025

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2024-26006

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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: 7/9/2024

Vulnerability Publication Date: 7/9/2024

Reference Information

CVE: CVE-2024-26006

IAVA: 2024-A-0381-S