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Fortinet FortiOS <= 6.2.9 / 6.4.x <= 6.4.6 / 7.0.0 Buffer Underwrite (FG-IR-21-046)

high Nessus Plugin ID 152514

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Synopsis

The remote host is affected by a buffer underwrite vulnerability.

Description

The remote host is running a version of FortiOS prior or equal to 6.2.9 or 6.4.x prior or equal to 6.4.6 or 7.0.0. It is, therefore, affected by a buffer underwriter vulnerability in the firmware verification routine of FortiOS that may allow an attacker located in the adjacent network to potentially execute arbitrary code via a specifically crafted firmware image.

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 Fortinet FortiOS version 6.2.10 / 6.4.7 / 7.0.1 or later.

See Also

https://www.fortiguard.com/psirt/FG-IR-21-046

Plugin Details

Severity: High

ID: 152514

File Name: fortios_FG-IR-21-046.nasl

Version: 1.6

Type: local

Family: Firewalls

Published: 8/12/2021

Updated: 9/16/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2021-24018

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/o:fortinet:fortios

Required KB Items: Host/Fortigate/version

Exploit Ease: No known exploits are available

Patch Publication Date: 8/3/2021

Vulnerability Publication Date: 8/3/2021

Reference Information

CVE: CVE-2021-24018

IAVA: 2021-A-0368-S