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Fortinet FortiOS Integer Overflow (FG-IR-21-155)

medium Nessus Plugin ID 162782

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Synopsis

The remote host is affected by an integer overflow vulnerability.

Description

An integer overflow vulnerability in the dhcpd daemon of FortiOS allows unauthenticated, adjacent attackers to cause a denial of service (DoS) condition.

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

Solution

Update to FortiOS version 6.2.11, 6.49., 7.0.4 or later

See Also

https://www.fortiguard.com/psirt/FG-IR-21-155

Plugin Details

Severity: Medium

ID: 162782

File Name: fortios_FG-IR-21-155.nasl

Version: 1.6

Type: local

Family: Firewalls

Published: 7/7/2022

Updated: 5/24/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.4

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

CVSS Score Source: CVE-2021-42755

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

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

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: 7/5/2022

Vulnerability Publication Date: 7/5/2022

Reference Information

CVE: CVE-2021-42755

IAVA: 2022-A-0264-S