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Fortinet FortiOS Buffer Overflow (FG-IR-21-173)

medium Nessus Plugin ID 156569

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Synopsis

The remote host is affected by a buffer overflow vulnerability.

Description

The remote host is running a version of FortiOS prior to 6.0.13, 6.2.x prior or equal to 6.2.9, 6.4.x prior or equal to 6.4.7, 7.0.x prior or equal to 7.0.2 or FortiOS-6K7K version prior to 6.2.8. It is, therefore, affected by a buffer overflow vulnerability in the TFTP client library of FortiOS, may allow an authenticated local attacker to achieve arbitrary code execution via specially crafted command line arguments.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

See vendor advisory.

See Also

https://www.fortiguard.com/psirt/FG-IR-21-173

Plugin Details

Severity: Medium

ID: 156569

File Name: fortios_FG-IR-21-173.nasl

Version: 1.4

Type: local

Family: Firewalls

Published: 1/10/2022

Updated: 9/19/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2021-42757

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:L/PR:H/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: 12/7/2021

Vulnerability Publication Date: 12/7/2021

Reference Information

CVE: CVE-2021-42757

IAVA: 2021-A-0574-S