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Fortinet Fortigate - IP address validation mishandles zero characters (FG-IR-23-446)

medium Nessus Plugin ID 202070

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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-23-446 advisory.

 - An incorrect parsing of numbers with different radices vulnerability [CWE-1389] in FortiProxy version 7.4.3 and below, version 7.2.10 and below, version 7.0.17 and below and FortiOS version 7.4.3 and below, version 7.2.8 and below, version 7.0.15 and below IP address validation feature may permit an unauthenticated attacker to bypass the IP blocklist via crafted requests. (CVE-2024-26015)

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 7.0.999999 / 7.2.9 / 7.4.4 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-23-446

Plugin Details

Severity: Medium

ID: 202070

File Name: fortigate_FG-IR-23-446.nasl

Version: 1.7

Type: local

Family: Firewalls

Published: 7/10/2024

Updated: 11/15/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.6

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.4

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

CVSS Score Source: CVE-2024-26015

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:A/AC:L/PR:N/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: 7/9/2024

Vulnerability Publication Date: 7/9/2024

Reference Information

CVE: CVE-2024-26015

IAVA: 2024-A-0381-S